SGP/EBBR/E7  - AEM Malfunction, Some Data Incorrect

After a while, the teflon slides on the AEMs warp from
heat and use.  This tends to make the AEM drag, jam, and get hung.
This happened at E7 EBBR.

Replacement of the AEM resolved the problem.

• top air temperature(tair_top)
• bottom vapor pressure(vp_bot)
• temperature of the top humidity sensor chamber(thum_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top vapor pressure(vp_top)
• top relative humidity(hum_top)
• bottom air temperature(tair_bot)
• bottom relative humidity(hum_bot)

• Left air temperature(tair_l)
• Right air temperature(tair_r)

• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• top air temperature(tair_top)
• top relative humidity(hum_top)
• top vapor pressure(vp_top)
• bottom air temperature(tair_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• bottom vapor pressure(vp_bot)
• latent heat flux(e)
• corrected sensible heat flux(h)
• bottom relative humidity(hum_bot)
• temperature of the top humidity sensor chamber(thum_top)

• Right air temperature(tair_r)
• Left air temperature(tair_l)

• bottom vapor pressure(vp_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• top relative humidity(hum_top)
• top air temperature(tair_top)
• bottom air temperature(tair_bot)
• bottom relative humidity(hum_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• corrected sensible heat flux(h)
• top vapor pressure(vp_top)
• latent heat flux(e)
• temperature of the top humidity sensor chamber(thum_top)

SGP/EBBR/E7 - Reprocess: Soil Heat Flow #5 Offscale, Surface Fluxes Incorrect

Soil Heat Flow #5 went offscale at times.

Latent and Sensible Heat Fluxes were incorrect when this occurred.

• Soil heat flow 5(mv_hft5)

• average surface soil heat flow at the surface(ave_shf)
• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• 5 cm soil heat flow, site 5(shf5)
• soil heat flow at the surface 5(g5)
• corrected sensible heat flux(h)
• latent heat flux(e)

SGP/EBBR/E27 - Right Air Temperature Spiked Offscale

The right air temperature was going offscale at times.
This problem seemed to end without Site Ops. intervention.

• bottom air temperature(tair_bot)
• top air temperature(tair_top)

• bottom air temperature(tair_bot)
• corrected sensible heat flux(h)
• latent heat flux(e)
• top air temperature(tair_top)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)

• Right air temperature(tair_r)

SGP/EBBR/E27 - Missing data during system update

Some soil parameters were slightly incorrect since EBBR.E27 was 
                 installed in May 2003.  While the coefficients were being updated,
                 data collection was suspended resulting in missing data for the 
                 specified period.
                    No significant effects (1% or less) on the surface heat flux data 
                 would have occurred from using the slightly incorrect coefficients. 
                 Therefore, flagging of the surface flux data from the time of 
                 installation of E27 is unwarranted.

• Resultant wind speed(res_ws)
• specific humidity(q)
• altitude above sea levelaltunits(alt)
• bottom relative humidity(hum_bot)
• Reference Thermistor Temperature(tref)
• pressure at constant pressure surface(pres)
• top relative humidity(hum_top)
• Northernmost north latitude for Zeb(lat)
• Time offset of tweaks from base_time(time_offset)
• scalar wind speed(wind_s)
• temperature of the top humidity sensor chamber(thum_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• wind direction (relative to true north)(wind_d)
• Home signal(home)
• top vapor pressure(vp_top)
• bottom air temperature(tair_bot)
• Time offset from midnight GMT(time)
• Time offset from base_time(base_time)
• top air temperature(tair_top)
• Westernmost west longitude for Zeb(lon)
• bottom vapor pressure(vp_bot)
• standard deviation of wind direction (sigma theta)(sigma_wd)

• 0-5 cm change in soil heat storage with time, site 2(ces1)
• Reference Thermistor Temperature(tref)
• temperature of the top humidity sensor chamber(thum_top)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• Soil moisture 5 (mass water/mass dry soil)(sm5)
• specific humidity(q)
• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• Resultant wind speed(res_ws)
• 5 cm soil heat flow, site 5(shf5)
• Soil moisture 4 (mass water/mass dry soil)(sm4)
• Soil moisture 1 (mass water/mass dry soil)(sm1)
• 0-5 cm change in soil heat storage with time, site 2(ces2)
• soil heat flow at the surface 5(g5)
• soil heat flow at the surface 3(g3)
• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• Soil moisture 3 (mass water/mass dry soil)(sm3)
• top relative humidity(hum_top)
• soil heat flow at the surface 2(g2)
• soil heat flow at the surface 1(g1)
• top vapor pressure(vp_top)
• Exchange mechanism position indicator (15 to 30 min)(home_30)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• bottom relative humidity(hum_bot)
• bottom air temperature(tair_bot)
• 0-5 cm integrated soil temperature, site 4(ts4)
• 0-5 cm integrated soil temperature, site 2(ts1)
• Northernmost north latitude for Zeb(lat)
• soil heat flow at the surface 4(g4)
• wind direction (relative to true north)(wind_d)
• altitude above sea levelaltunits(alt)
• Soil heat capacity 5(cs5)
• Soil heat capacity 1(cs1)
• Soil heat capacity 4(cs4)
• 0-5 cm integrated soil temperature, site 5(ts5)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• latent heat flux(e)
• Time offset from base_time(base_time)
• pressure at constant pressure surface(pres)
• 0-5 cm integrated soil temperature, site 3(ts3)
• 0-5 cm integrated soil temperature, site 2(ts2)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• Soil heat capacity 2(cs2)
• Soil heat capacity 3(cs3)
• bottom vapor pressure(vp_bot)
• Westernmost west longitude for Zeb(lon)
• Time offset of tweaks from base_time(time_offset)
• 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• top air temperature(tair_top)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• 5 cm soil heat flow, site 2(shf2)
• 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4)
• 5 cm soil heat flow, site 3(shf3)
• Soil moisture 2 (mass water/mass dry soil)(sm2)
• scalar wind speed(wind_s)
• 5 cm soil heat flow, site 4(shf4)
• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• 5 cm soil heat flow, site 1(shf1)
• average surface soil heat flow at the surface(ave_shf)
• corrected sensible heat flux(h)
• temperature of the bottom humidity sensor chamber(thum_bot)

• Soil moisture 5(r_sm5)
• Reference temperature(rr_tref)
• Battery(bat)
• Left air temperature(tair_l)
• Northernmost north latitude for Zeb(lat)
• Soil temperature 3(rr_ts3)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Soil temperature 4(rr_ts4)
• Soil moisture 2(r_sm2)
• Westernmost west longitude for Zeb(lon)
• scalar wind speed(wind_s)
• Soil temperature 5(rr_ts5)
• Right air temperature(tair_r)
• Soil moisture 3(r_sm3)
• Left relative humidity(mv_hum_l)
• Time offset from base_time(base_time)
• Soil moisture 4(r_sm4)
• Time offset of tweaks from base_time(time_offset)
• Soil heat flow 1(mv_hft1)
• Net radiation(mv_q)
• Soil heat flow 3(mv_hft3)
• Soil heat flow 4(mv_hft4)
• Soil heat flow 5(mv_hft5)
• Right relative humidity(mv_hum_r)
• Soil temperature 1(rr_ts1)
• Atmospheric pressure(mv_pres)
• Signature(signature)
• altitude above sea levelaltunits(alt)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Soil moisture 1(r_sm1)
• Soil temperature 2(rr_ts2)
• Wind direction (relative to true north)(mv_wind_d)
• Soil heat flow 2(mv_hft2)
• Home signal(mv_home)

SGP/EBBR/E20 - Fuse Blown in AEM

When the EBBR system restarted on 15 Oct. 2003, the AEM
malfunctioned.  Surface fluxes data during this period
are incorrect.

• bottom vapor pressure(vp_bot)
• temperature of the top humidity sensor chamber(thum_top)
• bottom relative humidity(hum_bot)
• top air temperature(tair_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• latent heat flux(e)
• top relative humidity(hum_top)
• corrected sensible heat flux(h)
• top vapor pressure(vp_top)
• bottom air temperature(tair_bot)

• Right air temperature(tair_r)
• Left air temperature(tair_l)

• bottom relative humidity(hum_bot)
• temperature of the top humidity sensor chamber(thum_top)
• bottom vapor pressure(vp_bot)
• top air temperature(tair_top)
• bottom air temperature(tair_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top relative humidity(hum_top)
• top vapor pressure(vp_top)

SGP/EBBR/E20 - Reprocess: Soil Temperature Probe #1 Measurements Spiked

The soil temperature #1 measurement spiked quite high at times.

This affected a number of measurements that are dependent on the 
soil temperature measurements.

• 0-5 cm change in soil heat storage with time, site 2(ces1)
• 0-5 cm integrated soil temperature, site 2(ts1)
• soil heat flow at the surface 1(g1)
• average surface soil heat flow at the surface(ave_shf)
• latent heat flux(e)
• corrected sensible heat flux(h)

• Soil temperature 1(rr_ts1)

SGP/EBBR/E7  - Reference Temperature Failure

The reference T sensor was not working, affecting 
other temperature sensors.  Sensible and latent heat fluxes
were incorrect when this occurred.

• top air temperature(tair_top)
• bottom air temperature(tair_bot)

• Right air temperature(tair_r)
• Left air temperature(tair_l)

• bottom air temperature(tair_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• top air temperature(tair_top)
• corrected sensible heat flux(h)
• latent heat flux(e)

SGP/EBBR/E15 - Reference Temperature Failed

The reference temperature failed, making air temperatures,
e, h, and Bowen ratio incorrect.

• Right air temperature(tair_r)
• Left air temperature(tair_l)

• bottom air temperature(tair_bot)
• top air temperature(tair_top)

• latent heat flux(e)
• top air temperature(tair_top)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• bottom air temperature(tair_bot)
• corrected sensible heat flux(h)

• top air temperature(tair_top)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• corrected sensible heat flux(h)
• latent heat flux(e)
• bottom air temperature(tair_bot)

• Left air temperature(tair_l)
• Right air temperature(tair_r)

SGP/EBBR/E12  - Water in Net Radiometer, Surface Fluxes Incorrect

The net radiometer top dome was punctured by migrating birds.  This alone does not cause 
incorrect net radiation measurements.  However, when it subsequently rains, water collects 
in the bottom dome, causing the net radiation measurements to be too large during the 
day and too small at night.

• Net radiation(mv_q)

• specific humidity(q)

• latent heat flux(e)
• specific humidity(q)
• corrected sensible heat flux(h)

SGP/EBBR/E13  - Water in Net Radiometer, Surface Fluxes Incorrect

The net radiometer top dome was punctured by migrating birds.  This alone does not cause 
incorrect net radiation measurements.  However, when it subsequently rains, water collects 
in the bottom dome, causing the net radiation measurements to be too large during the 
day and too small at night.

• Net radiation(mv_q)

• Net radiation(mv_q)

• specific humidity(q)
• latent heat flux(e)
• corrected sensible heat flux(h)

• specific humidity(q)

• latent heat flux(e)
• specific humidity(q)
• corrected sensible heat flux(h)

SGP/EBBR/E20  - Water in Net Radiometer, Surface Fluxes Incorrect

The net radiometer top dome was punctured by migrating birds.  This alone does not cause 
incorrect net radiation measurements.  However, when it subsequently rains, water collects 
in the bottom dome, causing the net radiation measurements to be too large during the 
day and too small at night.

• latent heat flux(e)
• specific humidity(q)
• corrected sensible heat flux(h)

• specific humidity(q)

• Net radiation(mv_q)

• specific humidity(q)
• latent heat flux(e)
• corrected sensible heat flux(h)

• Net radiation(mv_q)

SGP/EBBR/E22  - Water in Net Radiometer, Surface Fluxes Incorrect

The net radiometer top dome was punctured by migrating birds.  This alone does not cause 
incorrect net radiation measurements.  However, when it subsequently rains, water collects 
in the bottom dome, causing the net radiation measurements to be too large during the 
day and too small at night.

• corrected sensible heat flux(h)
• specific humidity(q)
• latent heat flux(e)

• specific humidity(q)

• corrected sensible heat flux(h)
• latent heat flux(e)
• specific humidity(q)

• Net radiation(mv_q)

• Net radiation(mv_q)

SGP/EBBR/E15  - Soil Temperature #5 Incorrect, Surface Fluxes Incorrect

Soil Temperature #5 was incorrect.

This affected many measurements, including sensible and latent heat fluxes.

• Soil temperature 5(rr_ts5)

• latent heat flux(e)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• 0-5 cm integrated soil temperature, site 5(ts5)
• soil heat flow at the surface 5(g5)
• average surface soil heat flow at the surface(ave_shf)
• corrected sensible heat flux(h)

• 0-5 cm integrated soil temperature, site 5(ts5)
• corrected sensible heat flux(h)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• latent heat flux(e)
• average surface soil heat flow at the surface(ave_shf)
• soil heat flow at the surface 5(g5)

• Soil temperature 5(rr_ts5)

SGP/EBBR/E26 - AEM Home Signals Incorrect, Surface Fluxes Incorrect

During a preventative maintenance visit to perform the 6-month
calibrations, the home15 and home30 outputs began reading the
same as one another.  A fuse replacement and lubrication of the 
AEM sprockets on 11/13 corrected the problem.

During the interval specified, the home15, home30, and sensible
and latent heat fluxes are incorrect.

• Temperature of right humidity sensor chamber(rr_thum_r)
• Right air temperature(tair_r)
• Left air temperature(tair_l)
• Right relative humidity(mv_hum_r)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Left relative humidity(mv_hum_l)

• bottom air temperature(tair_bot)
• Home signal(home)
• bottom relative humidity(hum_bot)
• top relative humidity(hum_top)
• temperature of the top humidity sensor chamber(thum_top)
• bottom vapor pressure(vp_bot)
• top air temperature(tair_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top vapor pressure(vp_top)

• top air temperature(tair_top)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• temperature of the bottom humidity sensor chamber(thum_bot)
• corrected sensible heat flux(h)
• latent heat flux(e)
• top vapor pressure(vp_top)
• bottom relative humidity(hum_bot)
• bottom vapor pressure(vp_bot)
• Exchange mechanism position indicator (15 to 30 min)(home_30)
• top relative humidity(hum_top)
• bottom air temperature(tair_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• temperature of the top humidity sensor chamber(thum_top)

SGP/EBBR/E15 - Soil Temperature #5 Incorrect, Surface Fluxes Incorrect

Soil Temperature #5 was incorrect.

This affected many measurements, including sensible and latent heat fluxes.

• Soil temperature 5(rr_ts5)

• latent heat flux(e)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• 0-5 cm integrated soil temperature, site 5(ts5)
• soil heat flow at the surface 5(g5)
• average surface soil heat flow at the surface(ave_shf)
• corrected sensible heat flux(h)

SGP/EBBR/E15 - AEM Hung Between Home Positions, Surface Fluxes Incorrect

The AEM was hung inbetween home positions.

Therefore the sensible and latent heat fluxes are also incorrect.

• Temperature of left humidity sensor chamber(rr_thum_l)
• Left relative humidity(mv_hum_l)
• Left air temperature(tair_l)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Right relative humidity(mv_hum_r)
• Right air temperature(tair_r)
• Home signal(mv_home)

• temperature of the bottom humidity sensor chamber(thum_bot)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• bottom vapor pressure(vp_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• bottom air temperature(tair_bot)
• latent heat flux(e)
• temperature of the top humidity sensor chamber(thum_top)
• top air temperature(tair_top)
• Exchange mechanism position indicator (15 to 30 min)(home_30)
• top vapor pressure(vp_top)
• top relative humidity(hum_top)
• bottom relative humidity(hum_bot)
• corrected sensible heat flux(h)

• bottom vapor pressure(vp_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• bottom air temperature(tair_bot)
• top vapor pressure(vp_top)
• top air temperature(tair_top)
• bottom relative humidity(hum_bot)
• top relative humidity(hum_top)
• temperature of the top humidity sensor chamber(thum_top)

SGP/EBBR/E19 - Battery Voltage Too Low, Most Measurements Incorrect

Battery voltage dropped below levels required to sustain the 
               production of valid data.  The AC charger unit had failed.  
               This prevented charging of the battery during the night and
               prevented the solar panel regulator from properly charging 
               the battery during the day.

• pressure at constant pressure surface(pres)
• scalar wind speed(wind_s)
• Reference Thermistor Temperature(tref)
• specific humidity(q)
• Time offset from midnight GMT(time)
• top air temperature(tair_top)
• temperature of the top humidity sensor chamber(thum_top)
• bottom vapor pressure(vp_bot)
• wind direction (relative to true north)(wind_d)
• top vapor pressure(vp_top)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• bottom relative humidity(hum_bot)
• Resultant wind speed(res_ws)
• temperature of the bottom humidity sensor chamber(thum_bot)
• bottom air temperature(tair_bot)
• top relative humidity(hum_top)
• Home signal(home)

• Right relative humidity(mv_hum_r)
• Soil heat flow 1(mv_hft1)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Soil temperature 1(rr_ts1)
• Soil heat flow 3(mv_hft3)
• Atmospheric pressure(mv_pres)
• Soil temperature 2(rr_ts2)
• Soil heat flow 2(mv_hft2)
• Left air temperature(tair_l)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Soil moisture 5(r_sm5)
• Soil temperature 4(rr_ts4)
• Net radiation(mv_q)
• scalar wind speed(wind_s)
• Reference temperature(rr_tref)
• Soil moisture 2(r_sm2)
• Soil temperature 5(rr_ts5)
• Left relative humidity(mv_hum_l)
• Soil temperature 3(rr_ts3)
• Home signal(mv_home)
• Wind direction (relative to true north)(mv_wind_d)
• Soil moisture 4(r_sm4)
• Right air temperature(tair_r)
• Soil moisture 3(r_sm3)
• Soil heat flow 4(mv_hft4)
• Soil heat flow 5(mv_hft5)
• Soil moisture 1(r_sm1)

• 0-5 cm integrated soil temperature, site 5(ts5)
• 0-5 cm integrated soil temperature, site 3(ts3)
• Reference Thermistor Temperature(tref)
• 5 cm soil heat flow, site 2(shf2)
• Soil moisture 1 (mass water/mass dry soil)(sm1)
• Soil moisture 2 (mass water/mass dry soil)(sm2)
• 0-5 cm integrated soil temperature, site 4(ts4)
• Exchange mechanism position indicator (15 to 30 min)(home_30)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• Soil heat capacity 5(cs5)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• Soil heat capacity 3(cs3)
• Soil moisture 4 (mass water/mass dry soil)(sm4)
• corrected sensible heat flux(h)
• scalar wind speed(wind_s)
• temperature of the top humidity sensor chamber(thum_top)
• top air temperature(tair_top)
• Soil heat capacity 4(cs4)
• bottom relative humidity(hum_bot)
• soil heat flow at the surface 4(g4)
• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• 0-5 cm integrated soil temperature, site 2(ts1)
• top vapor pressure(vp_top)
• Resultant wind speed(res_ws)
• average surface soil heat flow at the surface(ave_shf)
• Soil moisture 5 (mass water/mass dry soil)(sm5)
• latent heat flux(e)
• wind direction (relative to true north)(wind_d)
• soil heat flow at the surface 2(g2)
• temperature of the bottom humidity sensor chamber(thum_bot)
• Soil heat capacity 1(cs1)
• Soil moisture 3 (mass water/mass dry soil)(sm3)
• soil heat flow at the surface 5(g5)
• soil heat flow at the surface 1(g1)
• soil heat flow at the surface 3(g3)
• 5 cm soil heat flow, site 1(shf1)
• bottom vapor pressure(vp_bot)
• Soil heat capacity 2(cs2)
• 0-5 cm change in soil heat storage with time, site 2(ces2)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• 5 cm soil heat flow, site 5(shf5)
• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• top relative humidity(hum_top)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• bottom air temperature(tair_bot)
• specific humidity(q)
• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• 5 cm soil heat flow, site 3(shf3)
• 5 cm soil heat flow, site 4(shf4)
• pressure at constant pressure surface(pres)
• 0-5 cm integrated soil temperature, site 2(ts2)
• 0-5 cm change in soil heat storage with time, site 2(ces1)
• 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4)

SGP/EBBR/E19 - AEM Stuck In One Position, Surface Fluxes Incorrect

The AEM home 15 and 30 outputs were both 40 mv
because the AEM was not exchanging.

Sensible and Latent Heat Fluxes are therefore
incorrect.

• bottom vapor pressure(vp_bot)
• bottom relative humidity(hum_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top vapor pressure(vp_top)
• top air temperature(tair_top)
• bottom air temperature(tair_bot)
• top relative humidity(hum_top)
• temperature of the top humidity sensor chamber(thum_top)

• Right air temperature(tair_r)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Left air temperature(tair_l)
• Temperature of left humidity sensor chamber(rr_thum_l)

• top vapor pressure(vp_top)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• corrected sensible heat flux(h)
• temperature of the top humidity sensor chamber(thum_top)
• top air temperature(tair_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• bottom vapor pressure(vp_bot)
• top relative humidity(hum_top)
• latent heat flux(e)
• bottom relative humidity(hum_bot)
• bottom air temperature(tair_bot)

SGP/EBBR/E27 - Right Air Temperature Spiked Offscale

The right air temperature was going offscale at times.

• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• corrected sensible heat flux(h)
• latent heat flux(e)
• bottom air temperature(tair_bot)
• top air temperature(tair_top)

• Right air temperature(tair_r)

• bottom air temperature(tair_bot)
• top air temperature(tair_top)

• bottom air temperature(tair_bot)
• corrected sensible heat flux(h)
• latent heat flux(e)
• top air temperature(tair_top)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)

• Right air temperature(tair_r)

SGP/EBBR/E19 - Data Missing During Recalibration Changeout

Data was missing during the recalibration changeout.

• Reference temperature(rr_tref)
• Soil temperature 5(rr_ts5)
• scalar wind speed(wind_s)
• Soil temperature 4(rr_ts4)
• Wind direction (relative to true north)(mv_wind_d)
• Soil moisture 1(r_sm1)
• Home signal(mv_home)
• Soil moisture 3(r_sm3)
• Soil moisture 2(r_sm2)
• Left air temperature(tair_l)
• Left relative humidity(mv_hum_l)
• Soil heat flow 4(mv_hft4)
• Right relative humidity(mv_hum_r)
• Soil heat flow 5(mv_hft5)
• Soil heat flow 3(mv_hft3)
• Soil moisture 4(r_sm4)
• Soil moisture 5(r_sm5)
• Signature(signature)
• altitude above sea levelaltunits(alt)
• Time offset from base_time(base_time)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Atmospheric pressure(mv_pres)
• Northernmost north latitude for Zeb(lat)
• Right air temperature(tair_r)
• Soil heat flow 1(mv_hft1)
• Soil heat flow 2(mv_hft2)
• Battery(bat)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Soil temperature 1(rr_ts1)
• Soil temperature 2(rr_ts2)
• Time offset of tweaks from base_time(time_offset)
• Westernmost west longitude for Zeb(lon)
• Soil temperature 3(rr_ts3)
• Net radiation(mv_q)

• Right relative humidity(mv_hum_r)
• Soil heat flow 1(mv_hft1)
• Soil temperature 1(rr_ts1)
• Soil heat flow 3(mv_hft3)
• Soil temperature 2(rr_ts2)
• Westernmost west longitude for Zeb(lon)
• Soil heat flow 2(mv_hft2)
• Left air temperature(tair_l)
• Reference temperature(rr_tref)
• Battery(bat)
• Soil temperature 3(rr_ts3)
• Home signal(mv_home)
• Right air temperature(tair_r)
• altitude above sea levelaltunits(alt)
• Soil heat flow 4(mv_hft4)
• Soil heat flow 5(mv_hft5)
• Northernmost north latitude for Zeb(lat)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Atmospheric pressure(mv_pres)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Soil moisture 5(r_sm5)
• Soil temperature 4(rr_ts4)
• Net radiation(mv_q)
• scalar wind speed(wind_s)
• Time offset of tweaks from base_time(time_offset)
• Soil moisture 2(r_sm2)
• Soil temperature 5(rr_ts5)
• Left relative humidity(mv_hum_l)
• Wind direction (relative to true north)(mv_wind_d)
• Signature(signature)
• Soil moisture 4(r_sm4)
• Soil moisture 3(r_sm3)
• Time offset from base_time(base_time)
• Soil moisture 1(r_sm1)

• 5 cm soil heat flow, site 3(shf3)
• top vapor pressure(vp_top)
• 5 cm soil heat flow, site 1(shf1)
• altitude above sea levelaltunits(alt)
• Exchange mechanism position indicator (15 to 30 min)(home_30)
• pressure at constant pressure surface(pres)
• Westernmost west longitude for Zeb(lon)
• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• wind direction (relative to true north)(wind_d)
• bottom vapor pressure(vp_bot)
• Best estimate Latent heat flux(ecomb)
• 5 cm soil heat flow, site 4(shf4)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• corrected sensible heat flux(h)
• specific humidity(q)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• 5 cm soil heat flow, site 5(shf5)
• 0-5 cm change in soil heat storage with time, site 2(ces1)
• 5 cm soil heat flow, site 2(shf2)
• 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• Time offset from base_time(base_time)
• 0-5 cm change in soil heat storage with time, site 2(ces2)
• Aerodynamic Latent heat flux(ale)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• average surface soil heat flow at the surface(ave_shf)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• Northernmost north latitude for Zeb(lat)
• bottom air temperature(tair_bot)
• soil heat flow at the surface 4(g4)
• soil heat flow at the surface 5(g5)
• Best estimate Sensible heat flux(hcomb)
• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4)
• temperature of the top humidity sensor chamber(thum_top)
• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• soil heat flow at the surface 1(g1)
• Aerodynamic Sensible heat flux(ah)
• 0-5 cm integrated soil temperature, site 2(ts1)
• Reference Thermistor Temperature(tref)
• top air temperature(tair_top)
• 0-5 cm integrated soil temperature, site 2(ts2)
• Soil moisture 5 (mass water/mass dry soil)(sm5)
• soil heat flow at the surface 3(g3)
• 0-5 cm integrated soil temperature, site 5(ts5)
• latent heat flux(e)
• 0-5 cm integrated soil temperature, site 4(ts4)
• 0-5 cm integrated soil temperature, site 3(ts3)
• soil heat flow at the surface 2(g2)
• bottom relative humidity(hum_bot)
• Estimated height of the vegetation.(vegetation_height)
• Soil moisture 1 (mass water/mass dry soil)(sm1)
• Friction velocity(austar)
• scalar wind speed(wind_s)
• Soil heat capacity 1(cs1)
• Soil heat capacity 5(cs5)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• Soil heat capacity 3(cs3)
• Soil moisture 3 (mass water/mass dry soil)(sm3)
• Resultant wind speed(res_ws)
• Soil heat capacity 4(cs4)
• Time offset of tweaks from base_time(time_offset)
• Soil heat capacity 2(cs2)
• top relative humidity(hum_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• Soil moisture 2 (mass water/mass dry soil)(sm2)
• Soil moisture 4 (mass water/mass dry soil)(sm4)

• Raw data stream - documentation not supported(Raw data stream - documentation not supported)

• bottom vapor pressure(vp_bot)
• temperature of the top humidity sensor chamber(thum_top)
• bottom relative humidity(hum_bot)
• Time offset from base_time(base_time)
• wind direction (relative to true north)(wind_d)
• bottom air temperature(tair_bot)
• top air temperature(tair_top)
• scalar wind speed(wind_s)
• top vapor pressure(vp_top)
• Northernmost north latitude for Zeb(lat)
• Westernmost west longitude for Zeb(lon)
• Resultant wind speed(res_ws)
• top relative humidity(hum_top)
• altitude above sea levelaltunits(alt)
• Reference Thermistor Temperature(tref)
• pressure at constant pressure surface(pres)
• Time offset of tweaks from base_time(time_offset)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• temperature of the bottom humidity sensor chamber(thum_bot)
• Home signal(home)
• specific humidity(q)

• 0-5 cm integrated soil temperature, site 3(ts3)
• Resultant wind speed(res_ws)
• soil heat flow at the surface 2(g2)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• soil heat flow at the surface 1(g1)
• specific humidity(q)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• Soil moisture 3 (mass water/mass dry soil)(sm3)
• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• average surface soil heat flow at the surface(ave_shf)
• Soil moisture 4 (mass water/mass dry soil)(sm4)
• Soil heat capacity 3(cs3)
• 0-5 cm change in soil heat storage with time, site 2(ces2)
• Soil heat capacity 5(cs5)
• 0-5 cm integrated soil temperature, site 4(ts4)
• Time offset from base_time(base_time)
• Soil heat capacity 2(cs2)
• 0-5 cm integrated soil temperature, site 2(ts2)
• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• 0-5 cm integrated soil temperature, site 2(ts1)
• 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3)
• Soil moisture 2 (mass water/mass dry soil)(sm2)
• Soil heat capacity 1(cs1)
• latent heat flux(e)
• bottom vapor pressure(vp_bot)
• wind direction (relative to true north)(wind_d)
• soil heat flow at the surface 3(g3)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top relative humidity(hum_top)
• Northernmost north latitude for Zeb(lat)
• soil heat flow at the surface 5(g5)
• scalar wind speed(wind_s)
• bottom air temperature(tair_bot)
• Soil moisture 1 (mass water/mass dry soil)(sm1)
• altitude above sea levelaltunits(alt)
• 5 cm soil heat flow, site 1(shf1)
• 5 cm soil heat flow, site 4(shf4)
• Exchange mechanism position indicator (15 to 30 min)(home_30)
• Reference Thermistor Temperature(tref)
• 5 cm soil heat flow, site 5(shf5)
• top vapor pressure(vp_top)
• Westernmost west longitude for Zeb(lon)
• pressure at constant pressure surface(pres)
• temperature of the top humidity sensor chamber(thum_top)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• 5 cm soil heat flow, site 2(shf2)
• soil heat flow at the surface 4(g4)
• 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4)
• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• Time offset of tweaks from base_time(time_offset)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• 0-5 cm integrated soil temperature, site 5(ts5)
• 0-5 cm change in soil heat storage with time, site 2(ces1)
• Soil heat capacity 4(cs4)
• corrected sensible heat flux(h)
• Soil moisture 5 (mass water/mass dry soil)(sm5)
• bottom relative humidity(hum_bot)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• 5 cm soil heat flow, site 3(shf3)
• top air temperature(tair_top)
• 0-5 cm change in soil heat storage with time, site 5(ces5)

• Raw data stream - documentation not supported(Raw data stream - documentation not supported)

• altitude above sea levelaltunits(alt)
• Reference Thermistor Temperature(tref)
• 5 cm soil heat flow, site 2(shf2)
• Soil moisture 1 (mass water/mass dry soil)(sm1)
• Soil moisture 2 (mass water/mass dry soil)(sm2)
• Exchange mechanism position indicator (15 to 30 min)(home_30)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• Soil moisture 4 (mass water/mass dry soil)(sm4)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• corrected sensible heat flux(h)
• scalar wind speed(wind_s)
• top air temperature(tair_top)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• top vapor pressure(vp_top)
• average surface soil heat flow at the surface(ave_shf)
• Soil moisture 5 (mass water/mass dry soil)(sm5)
• latent heat flux(e)
• Northernmost north latitude for Zeb(lat)
• wind direction (relative to true north)(wind_d)
• soil heat flow at the surface 2(g2)
• Soil heat capacity 1(cs1)
• Time offset from base_time(base_time)
• soil heat flow at the surface 5(g5)
• soil heat flow at the surface 3(g3)
• Soil heat capacity 2(cs2)
• 0-5 cm change in soil heat storage with time, site 2(ces2)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• 5 cm soil heat flow, site 5(shf5)
• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• bottom air temperature(tair_bot)
• specific humidity(q)
• 5 cm soil heat flow, site 4(shf4)
• pressure at constant pressure surface(pres)
• 0-5 cm change in soil heat storage with time, site 2(ces1)
• 0-5 cm integrated soil temperature, site 5(ts5)
• 0-5 cm integrated soil temperature, site 3(ts3)
• 0-5 cm integrated soil temperature, site 4(ts4)
• Soil heat capacity 5(cs5)
• 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3)
• Soil heat capacity 3(cs3)
• temperature of the top humidity sensor chamber(thum_top)
• Soil heat capacity 4(cs4)
• bottom relative humidity(hum_bot)
• soil heat flow at the surface 4(g4)
• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• Westernmost west longitude for Zeb(lon)
• 0-5 cm integrated soil temperature, site 2(ts1)
• Resultant wind speed(res_ws)
• temperature of the bottom humidity sensor chamber(thum_bot)
• Time offset of tweaks from base_time(time_offset)
• Soil moisture 3 (mass water/mass dry soil)(sm3)
• soil heat flow at the surface 1(g1)
• 5 cm soil heat flow, site 1(shf1)
• bottom vapor pressure(vp_bot)
• top relative humidity(hum_top)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• 5 cm soil heat flow, site 3(shf3)
• 0-5 cm integrated soil temperature, site 2(ts2)
• 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4)

SGP/EBBR/E12 - Pressure Sensor Measurement Scales With Battery Voltage

The barometer output was scaling with supply voltage (i.e. it 
               followed the charging of the battery by the solar panel).

               NOTE: The barometer was replaced later than the end date of 
               this DQR.  Why the problem ended on 26 Nov 2003 is unclear; 
               there was no site ops intervention on that date.

               The problem did not affect the sensible and latent heat flux 
               calculations beyond the expected system error.

• Atmospheric pressure(mv_pres)

• pressure at constant pressure surface(pres)

• pressure at constant pressure surface(pres)

SGP/EBBR/E13 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

• Temperature of left humidity sensor chamber(rr_thum_l)
• Left air temperature(tair_l)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Right air temperature(tair_r)
• Left relative humidity(mv_hum_l)
• Right relative humidity(mv_hum_r)

• top air temperature(tair_top)
• temperature of the top humidity sensor chamber(thum_top)
• bottom relative humidity(hum_bot)
• bottom vapor pressure(vp_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top vapor pressure(vp_top)
• top relative humidity(hum_top)
• bottom air temperature(tair_bot)

• bottom relative humidity(hum_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• temperature of the bottom humidity sensor chamber(thum_bot)
• corrected sensible heat flux(h)
• top relative humidity(hum_top)
• top air temperature(tair_top)
• top vapor pressure(vp_top)
• bottom vapor pressure(vp_bot)
• temperature of the top humidity sensor chamber(thum_top)
• latent heat flux(e)
• bottom air temperature(tair_bot)

SGP/EBBR/E15 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

• Temperature of left humidity sensor chamber(rr_thum_l)
• Left relative humidity(mv_hum_l)
• Left air temperature(tair_l)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Right relative humidity(mv_hum_r)
• Right air temperature(tair_r)

• temperature of the bottom humidity sensor chamber(thum_bot)
• bottom vapor pressure(vp_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• bottom air temperature(tair_bot)
• latent heat flux(e)
• temperature of the top humidity sensor chamber(thum_top)
• top air temperature(tair_top)
• top vapor pressure(vp_top)
• top relative humidity(hum_top)
• bottom relative humidity(hum_bot)
• corrected sensible heat flux(h)

• bottom vapor pressure(vp_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• bottom air temperature(tair_bot)
• top vapor pressure(vp_top)
• top air temperature(tair_top)
• bottom relative humidity(hum_bot)
• top relative humidity(hum_top)
• temperature of the top humidity sensor chamber(thum_top)

SGP/EBBR/E18 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

• temperature of the bottom humidity sensor chamber(thum_bot)
• top air temperature(tair_top)
• top relative humidity(hum_top)
• top vapor pressure(vp_top)
• temperature of the top humidity sensor chamber(thum_top)
• bottom air temperature(tair_bot)
• bottom relative humidity(hum_bot)
• bottom vapor pressure(vp_bot)

• top air temperature(tair_top)
• latent heat flux(e)
• bottom vapor pressure(vp_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• corrected sensible heat flux(h)
• bottom relative humidity(hum_bot)
• temperature of the top humidity sensor chamber(thum_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top relative humidity(hum_top)
• bottom air temperature(tair_bot)
• top vapor pressure(vp_top)

• Temperature of left humidity sensor chamber(rr_thum_l)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Right relative humidity(mv_hum_r)
• Left air temperature(tair_l)
• Left relative humidity(mv_hum_l)
• Right air temperature(tair_r)

SGP/EBBR/E19 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

• Right relative humidity(mv_hum_r)
• Right air temperature(tair_r)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Left air temperature(tair_l)
• Left relative humidity(mv_hum_l)

• Right air temperature(tair_r)
• Right relative humidity(mv_hum_r)
• Left relative humidity(mv_hum_l)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Left air temperature(tair_l)
• Temperature of left humidity sensor chamber(rr_thum_l)

• temperature of the bottom humidity sensor chamber(thum_bot)
• bottom vapor pressure(vp_bot)
• top vapor pressure(vp_top)
• temperature of the top humidity sensor chamber(thum_top)
• bottom relative humidity(hum_bot)
• bottom air temperature(tair_bot)
• top relative humidity(hum_top)
• top air temperature(tair_top)

• top vapor pressure(vp_top)
• latent heat flux(e)
• corrected sensible heat flux(h)
• bottom vapor pressure(vp_bot)
• temperature of the top humidity sensor chamber(thum_top)
• top air temperature(tair_top)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• temperature of the bottom humidity sensor chamber(thum_bot)
• bottom air temperature(tair_bot)
• top relative humidity(hum_top)
• bottom relative humidity(hum_bot)

• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• corrected sensible heat flux(h)
• temperature of the top humidity sensor chamber(thum_top)
• top air temperature(tair_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top relative humidity(hum_top)
• bottom relative humidity(hum_bot)
• bottom air temperature(tair_bot)
• top vapor pressure(vp_top)
• bottom vapor pressure(vp_bot)
• latent heat flux(e)

SGP/EBBR/E19 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

• bottom vapor pressure(vp_bot)
• bottom relative humidity(hum_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top air temperature(tair_top)
• top vapor pressure(vp_top)
• bottom air temperature(tair_bot)
• top relative humidity(hum_top)
• temperature of the top humidity sensor chamber(thum_top)

• Right air temperature(tair_r)
• Right relative humidity(mv_hum_r)
• Left relative humidity(mv_hum_l)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Left air temperature(tair_l)
• Temperature of left humidity sensor chamber(rr_thum_l)

• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• corrected sensible heat flux(h)
• temperature of the top humidity sensor chamber(thum_top)
• top air temperature(tair_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top relative humidity(hum_top)
• bottom relative humidity(hum_bot)
• bottom air temperature(tair_bot)
• top vapor pressure(vp_top)
• bottom vapor pressure(vp_bot)
• latent heat flux(e)

SGP/EBBR/E20 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

• bottom relative humidity(hum_bot)
• top relative humidity(hum_top)
• top vapor pressure(vp_top)
• bottom vapor pressure(vp_bot)
• temperature of the top humidity sensor chamber(thum_top)
• top air temperature(tair_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• latent heat flux(e)
• corrected sensible heat flux(h)
• bottom air temperature(tair_bot)

• Left relative humidity(mv_hum_l)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Left air temperature(tair_l)
• Right air temperature(tair_r)
• Right relative humidity(mv_hum_r)

• temperature of the top humidity sensor chamber(thum_top)
• bottom air temperature(tair_bot)
• top relative humidity(hum_top)
• bottom relative humidity(hum_bot)
• bottom vapor pressure(vp_bot)
• top air temperature(tair_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top vapor pressure(vp_top)

SGP/EBBR/E19 - Data All Zeros

The time period after restart of the datalogger produced all
zero data.

• Reference temperature(rr_tref)
• Soil temperature 5(rr_ts5)
• scalar wind speed(wind_s)
• Soil temperature 4(rr_ts4)
• Wind direction (relative to true north)(mv_wind_d)
• Soil moisture 1(r_sm1)
• Home signal(mv_home)
• Soil moisture 3(r_sm3)
• Soil moisture 2(r_sm2)
• Left air temperature(tair_l)
• Left relative humidity(mv_hum_l)
• Soil heat flow 4(mv_hft4)
• Soil heat flow 5(mv_hft5)
• Right relative humidity(mv_hum_r)
• Soil moisture 4(r_sm4)
• Soil heat flow 3(mv_hft3)
• Soil moisture 5(r_sm5)
• Signature(signature)
• altitude above sea levelaltunits(alt)
• Time offset from base_time(base_time)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Atmospheric pressure(mv_pres)
• Northernmost north latitude for Zeb(lat)
• Right air temperature(tair_r)
• Soil heat flow 1(mv_hft1)
• Soil heat flow 2(mv_hft2)
• Battery(bat)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Soil temperature 1(rr_ts1)
• Soil temperature 2(rr_ts2)
• Time offset of tweaks from base_time(time_offset)
• Westernmost west longitude for Zeb(lon)
• Soil temperature 3(rr_ts3)
• Net radiation(mv_q)

• Right relative humidity(mv_hum_r)
• Soil heat flow 1(mv_hft1)
• Soil temperature 1(rr_ts1)
• Soil heat flow 3(mv_hft3)
• Soil temperature 2(rr_ts2)
• Soil heat flow 2(mv_hft2)
• Left air temperature(tair_l)
• Reference temperature(rr_tref)
• Battery(bat)
• Soil temperature 3(rr_ts3)
• Home signal(mv_home)
• Right air temperature(tair_r)
• Soil heat flow 4(mv_hft4)
• Soil heat flow 5(mv_hft5)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Atmospheric pressure(mv_pres)
• Soil moisture 5(r_sm5)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Soil temperature 4(rr_ts4)
• Net radiation(mv_q)
• scalar wind speed(wind_s)
• Soil moisture 2(r_sm2)
• Soil temperature 5(rr_ts5)
• Left relative humidity(mv_hum_l)
• Wind direction (relative to true north)(mv_wind_d)
• Soil moisture 4(r_sm4)
• Soil moisture 3(r_sm3)
• Soil moisture 1(r_sm1)

• bottom vapor pressure(vp_bot)
• temperature of the top humidity sensor chamber(thum_top)
• bottom relative humidity(hum_bot)
• wind direction (relative to true north)(wind_d)
• bottom air temperature(tair_bot)
• top air temperature(tair_top)
• scalar wind speed(wind_s)
• top vapor pressure(vp_top)
• Resultant wind speed(res_ws)
• top relative humidity(hum_top)
• Reference Thermistor Temperature(tref)
• pressure at constant pressure surface(pres)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• temperature of the bottom humidity sensor chamber(thum_bot)
• Home signal(home)
• specific humidity(q)

• 0-5 cm integrated soil temperature, site 3(ts3)
• Resultant wind speed(res_ws)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• soil heat flow at the surface 2(g2)
• soil heat flow at the surface 1(g1)
• specific humidity(q)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• Soil moisture 3 (mass water/mass dry soil)(sm3)
• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• average surface soil heat flow at the surface(ave_shf)
• Soil heat capacity 3(cs3)
• Soil moisture 4 (mass water/mass dry soil)(sm4)
• 0-5 cm change in soil heat storage with time, site 2(ces2)
• Soil heat capacity 5(cs5)
• 0-5 cm integrated soil temperature, site 4(ts4)
• Time offset from base_time(base_time)
• Soil heat capacity 2(cs2)
• 0-5 cm integrated soil temperature, site 2(ts2)
• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• 0-5 cm integrated soil temperature, site 2(ts1)
• 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3)
• Soil moisture 2 (mass water/mass dry soil)(sm2)
• Soil heat capacity 1(cs1)
• latent heat flux(e)
• bottom vapor pressure(vp_bot)
• wind direction (relative to true north)(wind_d)
• soil heat flow at the surface 3(g3)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top relative humidity(hum_top)
• Northernmost north latitude for Zeb(lat)
• soil heat flow at the surface 5(g5)
• scalar wind speed(wind_s)
• bottom air temperature(tair_bot)
• Soil moisture 1 (mass water/mass dry soil)(sm1)
• altitude above sea levelaltunits(alt)
• 5 cm soil heat flow, site 1(shf1)
• 5 cm soil heat flow, site 4(shf4)
• Exchange mechanism position indicator (15 to 30 min)(home_30)
• Reference Thermistor Temperature(tref)
• 5 cm soil heat flow, site 5(shf5)
• top vapor pressure(vp_top)
• Westernmost west longitude for Zeb(lon)
• pressure at constant pressure surface(pres)
• temperature of the top humidity sensor chamber(thum_top)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• 5 cm soil heat flow, site 2(shf2)
• soil heat flow at the surface 4(g4)
• 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4)
• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• Time offset of tweaks from base_time(time_offset)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• 0-5 cm integrated soil temperature, site 5(ts5)
• 0-5 cm change in soil heat storage with time, site 2(ces1)
• Soil heat capacity 4(cs4)
• corrected sensible heat flux(h)
• Soil moisture 5 (mass water/mass dry soil)(sm5)
• bottom relative humidity(hum_bot)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• 5 cm soil heat flow, site 3(shf3)
• top air temperature(tair_top)
• 0-5 cm change in soil heat storage with time, site 5(ces5)

• Reference Thermistor Temperature(tref)
• 5 cm soil heat flow, site 2(shf2)
• Soil moisture 1 (mass water/mass dry soil)(sm1)
• Soil moisture 2 (mass water/mass dry soil)(sm2)
• Exchange mechanism position indicator (15 to 30 min)(home_30)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• Soil moisture 4 (mass water/mass dry soil)(sm4)
• corrected sensible heat flux(h)
• scalar wind speed(wind_s)
• top air temperature(tair_top)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• top vapor pressure(vp_top)
• average surface soil heat flow at the surface(ave_shf)
• Soil moisture 5 (mass water/mass dry soil)(sm5)
• latent heat flux(e)
• wind direction (relative to true north)(wind_d)
• soil heat flow at the surface 2(g2)
• Soil heat capacity 1(cs1)
• soil heat flow at the surface 5(g5)
• soil heat flow at the surface 3(g3)
• Soil heat capacity 2(cs2)
• 0-5 cm change in soil heat storage with time, site 2(ces2)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• 5 cm soil heat flow, site 5(shf5)
• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• bottom air temperature(tair_bot)
• specific humidity(q)
• 5 cm soil heat flow, site 4(shf4)
• pressure at constant pressure surface(pres)
• 0-5 cm change in soil heat storage with time, site 2(ces1)
• 0-5 cm integrated soil temperature, site 5(ts5)
• 0-5 cm integrated soil temperature, site 3(ts3)
• 0-5 cm integrated soil temperature, site 4(ts4)
• Soil heat capacity 5(cs5)
• 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3)
• Soil heat capacity 3(cs3)
• temperature of the top humidity sensor chamber(thum_top)
• Soil heat capacity 4(cs4)
• bottom relative humidity(hum_bot)
• soil heat flow at the surface 4(g4)
• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• 0-5 cm integrated soil temperature, site 2(ts1)
• Resultant wind speed(res_ws)
• temperature of the bottom humidity sensor chamber(thum_bot)
• Soil moisture 3 (mass water/mass dry soil)(sm3)
• soil heat flow at the surface 1(g1)
• 5 cm soil heat flow, site 1(shf1)
• bottom vapor pressure(vp_bot)
• top relative humidity(hum_top)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• 5 cm soil heat flow, site 3(shf3)
• 0-5 cm integrated soil temperature, site 2(ts2)
• 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4)

SGP/EBBR/E22 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

• temperature of the bottom humidity sensor chamber(thum_bot)
• top relative humidity(hum_top)
• temperature of the top humidity sensor chamber(thum_top)
• bottom relative humidity(hum_bot)
• top air temperature(tair_top)
• bottom vapor pressure(vp_bot)
• bottom air temperature(tair_bot)
• top vapor pressure(vp_top)

• temperature of the top humidity sensor chamber(thum_top)
• latent heat flux(e)
• bottom air temperature(tair_bot)
• top relative humidity(hum_top)
• corrected sensible heat flux(h)
• bottom vapor pressure(vp_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• bottom relative humidity(hum_bot)
• top vapor pressure(vp_top)
• top air temperature(tair_top)
• temperature of the bottom humidity sensor chamber(thum_bot)

• Right relative humidity(mv_hum_r)
• Left air temperature(tair_l)
• Left relative humidity(mv_hum_l)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Right air temperature(tair_r)
• Temperature of left humidity sensor chamber(rr_thum_l)

SGP/EBBR/E26 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

• Temperature of right humidity sensor chamber(rr_thum_r)
• Right air temperature(tair_r)
• Left air temperature(tair_l)
• Right relative humidity(mv_hum_r)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Left relative humidity(mv_hum_l)

• bottom air temperature(tair_bot)
• bottom relative humidity(hum_bot)
• top relative humidity(hum_top)
• temperature of the top humidity sensor chamber(thum_top)
• bottom vapor pressure(vp_bot)
• top air temperature(tair_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top vapor pressure(vp_top)

• top air temperature(tair_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• corrected sensible heat flux(h)
• latent heat flux(e)
• top vapor pressure(vp_top)
• bottom relative humidity(hum_bot)
• bottom vapor pressure(vp_bot)
• top relative humidity(hum_top)
• bottom air temperature(tair_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• temperature of the top humidity sensor chamber(thum_top)

SGP/EBBR/E27 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

• bottom relative humidity(hum_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top air temperature(tair_top)
• top relative humidity(hum_top)
• bottom vapor pressure(vp_bot)
• top vapor pressure(vp_top)
• bottom air temperature(tair_bot)
• temperature of the top humidity sensor chamber(thum_top)

• temperature of the top humidity sensor chamber(thum_top)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• top air temperature(tair_top)
• latent heat flux(e)
• top vapor pressure(vp_top)
• bottom relative humidity(hum_bot)
• bottom vapor pressure(vp_bot)
• bottom air temperature(tair_bot)
• corrected sensible heat flux(h)
• top relative humidity(hum_top)
• temperature of the bottom humidity sensor chamber(thum_bot)

• Right air temperature(tair_r)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Left air temperature(tair_l)
• Left relative humidity(mv_hum_l)
• Right relative humidity(mv_hum_r)
• Temperature of left humidity sensor chamber(rr_thum_l)

SGP/EBBR/E2 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

• Right air temperature(tair_r)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Left relative humidity(mv_hum_l)
• Left air temperature(tair_l)
• Right relative humidity(mv_hum_r)

• temperature of the bottom humidity sensor chamber(thum_bot)
• top air temperature(tair_top)
• bottom vapor pressure(vp_bot)
• corrected sensible heat flux(h)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• bottom relative humidity(hum_bot)
• top relative humidity(hum_top)
• bottom air temperature(tair_bot)
• latent heat flux(e)
• top vapor pressure(vp_top)
• temperature of the top humidity sensor chamber(thum_top)

• bottom relative humidity(hum_bot)
• bottom vapor pressure(vp_bot)
• top air temperature(tair_top)
• bottom air temperature(tair_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top relative humidity(hum_top)
• temperature of the top humidity sensor chamber(thum_top)
• top vapor pressure(vp_top)

• Temperature of right humidity sensor chamber(rr_thum_r)
• Left relative humidity(mv_hum_l)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Right air temperature(tair_r)
• Right relative humidity(mv_hum_r)
• Left air temperature(tair_l)

• latent heat flux(e)
• bottom air temperature(tair_bot)
• bottom relative humidity(hum_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• top air temperature(tair_top)
• top relative humidity(hum_top)
• top vapor pressure(vp_top)
• bottom vapor pressure(vp_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• temperature of the top humidity sensor chamber(thum_top)
• corrected sensible heat flux(h)

SGP/EBBR/E4 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

• Left air temperature(tair_l)
• Left relative humidity(mv_hum_l)
• Right relative humidity(mv_hum_r)
• Right air temperature(tair_r)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Temperature of left humidity sensor chamber(rr_thum_l)

• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• bottom relative humidity(hum_bot)
• bottom air temperature(tair_bot)
• latent heat flux(e)
• bottom vapor pressure(vp_bot)
• top relative humidity(hum_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• temperature of the top humidity sensor chamber(thum_top)
• top vapor pressure(vp_top)
• corrected sensible heat flux(h)
• top air temperature(tair_top)

• Left air temperature(tair_l)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Right relative humidity(mv_hum_r)
• Left relative humidity(mv_hum_l)
• Right air temperature(tair_r)

• temperature of the bottom humidity sensor chamber(thum_bot)
• top vapor pressure(vp_top)
• bottom air temperature(tair_bot)
• temperature of the top humidity sensor chamber(thum_top)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• corrected sensible heat flux(h)
• top air temperature(tair_top)
• bottom relative humidity(hum_bot)
• bottom vapor pressure(vp_bot)
• top relative humidity(hum_top)
• latent heat flux(e)

• top air temperature(tair_top)
• bottom vapor pressure(vp_bot)
• top relative humidity(hum_top)
• bottom air temperature(tair_bot)
• temperature of the top humidity sensor chamber(thum_top)
• bottom relative humidity(hum_bot)
• top vapor pressure(vp_top)
• temperature of the bottom humidity sensor chamber(thum_bot)

SGP/EBBR/E7 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

• Temperature of left humidity sensor chamber(rr_thum_l)
• Right relative humidity(mv_hum_r)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Right air temperature(tair_r)
• Left relative humidity(mv_hum_l)
• Left air temperature(tair_l)

• top relative humidity(hum_top)
• bottom vapor pressure(vp_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• top air temperature(tair_top)
• bottom air temperature(tair_bot)
• bottom relative humidity(hum_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top vapor pressure(vp_top)
• corrected sensible heat flux(h)
• latent heat flux(e)
• temperature of the top humidity sensor chamber(thum_top)

• top relative humidity(hum_top)
• temperature of the top humidity sensor chamber(thum_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• bottom vapor pressure(vp_bot)
• bottom air temperature(tair_bot)
• bottom relative humidity(hum_bot)
• top vapor pressure(vp_top)
• top air temperature(tair_top)

SGP/EBBR/E8 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

• bottom air temperature(tair_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top vapor pressure(vp_top)
• top relative humidity(hum_top)
• bottom vapor pressure(vp_bot)
• latent heat flux(e)
• corrected sensible heat flux(h)
• bottom relative humidity(hum_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• top air temperature(tair_top)
• temperature of the top humidity sensor chamber(thum_top)

• Right relative humidity(mv_hum_r)
• Right air temperature(tair_r)
• Left air temperature(tair_l)
• Left relative humidity(mv_hum_l)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Temperature of right humidity sensor chamber(rr_thum_r)

• top relative humidity(hum_top)
• top vapor pressure(vp_top)
• bottom vapor pressure(vp_bot)
• bottom relative humidity(hum_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• bottom air temperature(tair_bot)
• temperature of the top humidity sensor chamber(thum_top)
• top air temperature(tair_top)

• temperature of the bottom humidity sensor chamber(thum_bot)
• corrected sensible heat flux(h)
• temperature of the top humidity sensor chamber(thum_top)
• top vapor pressure(vp_top)
• latent heat flux(e)
• top air temperature(tair_top)
• bottom air temperature(tair_bot)
• top relative humidity(hum_top)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• bottom vapor pressure(vp_bot)
• bottom relative humidity(hum_bot)

• Temperature of left humidity sensor chamber(rr_thum_l)
• Right air temperature(tair_r)
• Right relative humidity(mv_hum_r)
• Left air temperature(tair_l)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Left relative humidity(mv_hum_l)

SGP/EBBR/E9 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

• Right air temperature(tair_r)
• Left relative humidity(mv_hum_l)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Right relative humidity(mv_hum_r)
• Left air temperature(tair_l)

• top air temperature(tair_top)
• top vapor pressure(vp_top)
• bottom vapor pressure(vp_bot)
• temperature of the top humidity sensor chamber(thum_top)
• bottom relative humidity(hum_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• bottom air temperature(tair_bot)
• top relative humidity(hum_top)

• bottom vapor pressure(vp_bot)
• top relative humidity(hum_top)
• corrected sensible heat flux(h)
• top vapor pressure(vp_top)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• top air temperature(tair_top)
• bottom air temperature(tair_bot)
• bottom relative humidity(hum_bot)
• latent heat flux(e)
• temperature of the top humidity sensor chamber(thum_top)
• temperature of the bottom humidity sensor chamber(thum_bot)

SGP/EBBR/E12 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

• Right air temperature(tair_r)
• Left relative humidity(mv_hum_l)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Left air temperature(tair_l)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Right relative humidity(mv_hum_r)

• top vapor pressure(vp_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top air temperature(tair_top)
• bottom air temperature(tair_bot)
• temperature of the top humidity sensor chamber(thum_top)
• bottom relative humidity(hum_bot)
• bottom vapor pressure(vp_bot)
• top relative humidity(hum_top)

• bottom air temperature(tair_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• bottom vapor pressure(vp_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top relative humidity(hum_top)
• top air temperature(tair_top)
• temperature of the top humidity sensor chamber(thum_top)
• corrected sensible heat flux(h)
• latent heat flux(e)
• top vapor pressure(vp_top)
• bottom relative humidity(hum_bot)

SGP/EBBR/E20 - Wind Direction Incorrect

Wind direction is incorrect, reading at or about 0 or 15 to 25 degrees.

• standard deviation of wind direction (sigma theta)(sigma_wd)
• wind direction (relative to true north)(wind_d)
• Resultant wind speed(res_ws)

• Wind direction (relative to true north)(mv_wind_d)

• wind direction (relative to true north)(wind_d)
• Resultant wind speed(res_ws)
• standard deviation of wind direction (sigma theta)(sigma_wd)

SGP/EBBR/E27 - Reprocess: Soil Heat Flow #5 Offscale, Surface Fluxes Incorrect

Soil Heat Flow #5 went offscale at times.

Latent and Sensible Heat Fluxes were incorrect when this occurred.

• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• corrected sensible heat flux(h)
• latent heat flux(e)
• soil heat flow at the surface 5(g5)
• 5 cm soil heat flow, site 5(shf5)
• average surface soil heat flow at the surface(ave_shf)

• Soil heat flow 5(mv_hft5)

• average surface soil heat flow at the surface(ave_shf)
• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• corrected sensible heat flux(h)
• latent heat flux(e)
• 5 cm soil heat flow, site 5(shf5)
• soil heat flow at the surface 5(g5)

• Soil heat flow 5(mv_hft5)

SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect

In a trip to E26, I found that a bad spark gap through which the barometer was powered was 
causing pressure measurements to be incorrect.  The pressure readings oscillated with 
the voltage of the EBBR battery.  During daytime the voltage and thus the pressure would 
increase and vice versa during dark hours.

Apparently only the positive side of the power supply was properly connected through the 
spark gap and thus the voltage received by the pressure sensor was lower than required to 
power it properly.  Under this condition the perssure measurement varies with voltage 
level.  The pressure measurements therefore had a diurnal signature and usually were 
incorrect.  

The decreased pressure during most times would cause latent heat flux to be slightly 
overestimated and sensible heat flux to be slightly underestimated.

• Atmospheric pressure(mv_pres)

• pressure at constant pressure surface(pres)

• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• latent heat flux(e)
• pressure at constant pressure surface(pres)
• corrected sensible heat flux(h)

SGP/EBBR/E20 - Pressure Sensor Data Incorrect

The E20 pressure sensor suffered
from spikes in pressure, which were related to 
increases in voltage during the day as the 
solar panels charged the battery.  These spikes
were not of a magnitude that would affect the 
30 minute surface fluxes.

Replacement of the pressure sensor solved the problem.

• pressure at constant pressure surface(pres)

• Atmospheric pressure(mv_pres)

• pressure at constant pressure surface(pres)

SGP/EBBR/E7 - Pressure Sensor Data Incorrect

The E7 pressure sensor suffered
from spikes in pressure, which were related to 
increases in voltage during the day as the 
solar panels charged the battery.  These spikes
were not of a magnitude that would affect the 
30 minute surface fluxes.

Replacement of the pressure sensor solved the problem.

• pressure at constant pressure surface(pres)

• Atmospheric pressure(mv_pres)

• pressure at constant pressure surface(pres)

SGP/EBBR/E12 - Pressure Sensor Measurement Scales With Battery Voltage

The barometer output scaled with supply voltage (it followed the charging of the battery 
by the solar panel).

The problem did not affect the sensible and latent heat flux calculations
beyond the expected system error.

• Atmospheric pressure(mv_pres)

• pressure at constant pressure surface(pres)

• pressure at constant pressure surface(pres)

SGP/EBBR/E2 - All Data Zero After Logger Restart

All data was zero for the 5, 15, and 30 minute datastreams.

• Wind direction (relative to true north)(mv_wind_d)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Soil heat flow 5(mv_hft5)
• Soil temperature 1(rr_ts1)
• Soil temperature 4(rr_ts4)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Soil temperature 5(rr_ts5)
• Soil heat flow 2(mv_hft2)
• Left relative humidity(mv_hum_l)
• Soil heat flow 3(mv_hft3)
• Left air temperature(tair_l)
• scalar wind speed(wind_s)
• Soil moisture 3(r_sm3)
• Soil temperature 3(rr_ts3)
• Soil moisture 5(r_sm5)
• Atmospheric pressure(mv_pres)
• Soil heat flow 1(mv_hft1)
• Soil temperature 2(rr_ts2)
• Home signal(mv_home)
• Right relative humidity(mv_hum_r)
• Net radiation(mv_q)
• Soil moisture 1(r_sm1)
• Soil heat flow 4(mv_hft4)
• Battery(bat)
• Right air temperature(tair_r)
• Soil moisture 4(r_sm4)
• Reference temperature(rr_tref)
• Soil moisture 2(r_sm2)

• Soil heat capacity 2(cs2)
• soil heat flow at the surface 3(g3)
• scalar wind speed(wind_s)
• 5 cm soil heat flow, site 1(shf1)
• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• 0-5 cm integrated soil temperature, site 2(ts1)
• 0-5 cm integrated soil temperature, site 4(ts4)
• 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3)
• pressure at constant pressure surface(pres)
• 0-5 cm change in soil heat storage with time, site 2(ces2)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• 0-5 cm change in soil heat storage with time, site 2(ces1)
• wind direction (relative to true north)(wind_d)
• 0-5 cm integrated soil temperature, site 5(ts5)
• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• 5 cm soil heat flow, site 4(shf4)
• Soil moisture 5 (mass water/mass dry soil)(sm5)
• 0-5 cm integrated soil temperature, site 2(ts2)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• top vapor pressure(vp_top)
• 0-5 cm integrated soil temperature, site 3(ts3)
• Soil moisture 4 (mass water/mass dry soil)(sm4)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• bottom relative humidity(hum_bot)
• average surface soil heat flow at the surface(ave_shf)
• Soil moisture 3 (mass water/mass dry soil)(sm3)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• Soil heat capacity 3(cs3)
• latent heat flux(e)
• 5 cm soil heat flow, site 5(shf5)
• Soil heat capacity 4(cs4)
• Resultant wind speed(res_ws)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• specific humidity(q)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top air temperature(tair_top)
• bottom vapor pressure(vp_bot)
• corrected sensible heat flux(h)
• Soil moisture 1 (mass water/mass dry soil)(sm1)
• Soil moisture 2 (mass water/mass dry soil)(sm2)
• Soil heat capacity 1(cs1)
• soil heat flow at the surface 1(g1)
• Soil heat capacity 5(cs5)
• soil heat flow at the surface 2(g2)
• top relative humidity(hum_top)
• 5 cm soil heat flow, site 3(shf3)
• Reference Thermistor Temperature(tref)
• 5 cm soil heat flow, site 2(shf2)
• bottom air temperature(tair_bot)
• soil heat flow at the surface 4(g4)
• soil heat flow at the surface 5(g5)
• temperature of the top humidity sensor chamber(thum_top)
• 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4)
• Exchange mechanism position indicator (15 to 30 min)(home_30)

• bottom relative humidity(hum_bot)
• Reference Thermistor Temperature(tref)
• scalar wind speed(wind_s)
• top air temperature(tair_top)
• pressure at constant pressure surface(pres)
• top vapor pressure(vp_top)
• Resultant wind speed(res_ws)
• wind direction (relative to true north)(wind_d)
• Home signal(home)
• top relative humidity(hum_top)
• temperature of the top humidity sensor chamber(thum_top)
• bottom air temperature(tair_bot)
• specific humidity(q)
• bottom vapor pressure(vp_bot)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• temperature of the bottom humidity sensor chamber(thum_bot)

SGP/EBBR/E2 - Net Radiometer Iced Over During Storm

The net radiometer was covered with ice from a storm.  Net radiation values are incorrect, 
and are sometimes even negative during the daytime.  Sensible and latent heat fluxes are 
therefore incorrect.

• corrected sensible heat flux(h)
• latent heat flux(e)
• specific humidity(q)

• Net radiation(mv_q)

• specific humidity(q)

SGP/EBBR/E8  - Net Radiometer Iced Over During Storm

The net radiometer was covered with ice from a storm.  Net radiation values are incorrect, 
and are sometimes even negative during the daytime.  Sensible and latent heat fluxes are 
therefore incorrect.

• latent heat flux(e)
• specific humidity(q)
• corrected sensible heat flux(h)

• specific humidity(q)

• Net radiation(mv_q)

SGP/EBBR/E9  - Net Radiometer Iced Over During Storm

The net radiometer was covered with ice from a storm.  Net radiation values are incorrect, 
and are sometimes even negative during the daytime.  Sensible and latent heat fluxes are 
therefore incorrect.

• Net radiation(mv_q)

• specific humidity(q)

• latent heat flux(e)
• corrected sensible heat flux(h)
• specific humidity(q)

SGP/EBBR/E9 - Wind Speed Sensor Frozen By Ice Storm

The wind speed sensor was frozen stopped by ice from a storm.  The wind speed 
and residual wind speed measurements are incorrect.

• scalar wind speed(wind_s)

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

SGP/EBBR/E12  - Wind Speed Sensor Frozen By Ice Storm

The wind speed sensor was frozen stopped by ice from a storm.  The wind speed 
and residual wind speed measurements are incorrect.

• scalar wind speed(wind_s)

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

SGP/EBBR/E13  - Wind Speed Sensor Frozen By Ice Storm

The wind speed sensor was frozen stopped by ice from a storm.  The wind speed 
and residual wind speed measurements are incorrect.

• scalar wind speed(wind_s)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

SGP/EBBR/E13  - Net Radiometer Iced Over During Storm

The net radiometer was covered with ice from a storm.  Net radiation values are incorrect, 
and are sometimes even negative during the daytime.  Sensible and latent heat fluxes are 
therefore incorrect.

• Net radiation(mv_q)

• specific humidity(q)

• specific humidity(q)
• latent heat flux(e)
• corrected sensible heat flux(h)

SGP/EBBR/E15  - Net Radiometer Iced Over During Storm

The net radiometer was covered with ice from a storm.  Net radiation values are incorrect, 
and are sometimes even negative during the daytime.  Sensible and latent heat fluxes are 
therefore incorrect.

• Net radiation(mv_q)

• specific humidity(q)
• latent heat flux(e)
• corrected sensible heat flux(h)

• specific humidity(q)

SGP/EBBR/E15  - Wind Speed Sensor Frozen By Ice Storm

The wind speed sensor was frozen stopped by ice from a storm.  The wind speed 
and residual wind speed measurements are incorrect.

• scalar wind speed(wind_s)

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

SGP/EBBR/E20  - Wind Speed Sensor Frozen By Ice Storm

The wind speed sensor was frozen stopped by ice from a storm.  The wind speed 
and residual wind speed measurements are incorrect.

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• scalar wind speed(wind_s)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

SGP/EBBR/E22  - Wind Speed Sensor Frozen By Ice Storm

The wind speed sensor was frozen stopped by ice from a storm.  The wind speed 
and residual wind speed measurements are incorrect.

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• scalar wind speed(wind_s)

SGP/EBBR/E22 - Wind Direction Sensor Frozen By Ice Storm

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed measurements 
are incorrect.

• wind direction (relative to true north)(wind_d)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• Resultant wind speed(res_ws)

• Resultant wind speed(res_ws)
• wind direction (relative to true north)(wind_d)
• standard deviation of wind direction (sigma theta)(sigma_wd)

• Wind direction (relative to true north)(mv_wind_d)

SGP/EBBR/E4  - Wind Speed Sensor Frozen By Ice Storm

The wind speed sensor was frozen stopped by ice from a storm.  The wind speed 
and residual wind speed measurements are incorrect.

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• scalar wind speed(wind_s)

SGP/EBBR/E26  - Wind Speed Sensor Frozen By Ice Storm

The wind speed sensor was frozen stopped by ice from a storm.  The wind speed 
and residual wind speed measurements are incorrect.

• scalar wind speed(wind_s)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

SGP/EBBR/E26  - Wind Direction Sensor Frozen By Ice Storm

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed measurements 
are incorrect.

• Wind direction (relative to true north)(mv_wind_d)

• Resultant wind speed(res_ws)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• wind direction (relative to true north)(wind_d)

• standard deviation of wind direction (sigma theta)(sigma_wd)
• Resultant wind speed(res_ws)
• wind direction (relative to true north)(wind_d)

SGP/EBBR/E27 - Soil Temperature #3 Spike in Data

The soil temperature #3 spiked to zero and was therefore incorrect.

• average surface soil heat flow at the surface(ave_shf)
• corrected sensible heat flux(h)
• latent heat flux(e)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• 0-5 cm integrated soil temperature, site 3(ts3)
• soil heat flow at the surface 3(g3)

• Soil temperature 3(rr_ts3)

SGP/EBBR/E7 - Wind Speed Sensor Frozen By Ice Storm

The wind speed sensor was frozen stopped by ice.  The wind speed 
and residual wind speed measurements are incorrect.

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• scalar wind speed(wind_s)

SGP/EBBR/E19 - Wind Speed Sensor Frozen Stopped by Ice Storm

An ice storm froze the wind speed sensor to a stopped condition.
It is not known how long this condition existed, as data is missing
for more than 10 days after the end of the stated period.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

• scalar wind speed(wind_s)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

SGP/EBBR/E15 - Wind Direction About 130 Degrees Low

The EBBR wind direction sensor developed an approximately -130 degree offset. The pin 
holding the vane to the shaft had fallen out.

• Wind direction (relative to true north)(mv_wind_d)

• standard deviation of wind direction (sigma theta)(sigma_wd)
• wind direction (relative to true north)(wind_d)
• Resultant wind speed(res_ws)

• wind direction (relative to true north)(wind_d)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• Resultant wind speed(res_ws)

SGP/EBBR/E18 - AEM Sitting At Home 15 Position

After replacement of the AEM on 1/26/04, it exchanged
briefly, then sat at the home 15 position until another 
replacement was available.

• temperature of the bottom humidity sensor chamber(thum_bot)
• top air temperature(tair_top)
• top relative humidity(hum_top)
• top vapor pressure(vp_top)
• temperature of the top humidity sensor chamber(thum_top)
• bottom air temperature(tair_bot)
• bottom relative humidity(hum_bot)
• bottom vapor pressure(vp_bot)

• top air temperature(tair_top)
• latent heat flux(e)
• bottom vapor pressure(vp_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• corrected sensible heat flux(h)
• bottom relative humidity(hum_bot)
• temperature of the top humidity sensor chamber(thum_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top relative humidity(hum_top)
• bottom air temperature(tair_bot)
• top vapor pressure(vp_top)

• Left air temperature(tair_l)
• Right air temperature(tair_r)

• temperature of the top humidity sensor chamber(thum_top)
• top air temperature(tair_top)
• bottom air temperature(tair_bot)
• bottom vapor pressure(vp_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• corrected sensible heat flux(h)
• top relative humidity(hum_top)
• Best estimate Latent heat flux(ecomb)
• Aerodynamic Sensible heat flux(ah)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• bottom relative humidity(hum_bot)
• Aerodynamic Latent heat flux(ale)
• top vapor pressure(vp_top)
• Best estimate Sensible heat flux(hcomb)
• latent heat flux(e)

SGP/EBBR/E7 - Pressure Sensor Data Incorret

The E7 pressure sensor suffered
from spikes in pressure, which were related to 
increases in voltage during the day as the 
solar panels charged the battery.  These spikes
were not of a magnitude that would affect the 
30 minute surface fluxes.

Replacement of the pressure sensor solved the problem.

• Atmospheric pressure(mv_pres)

• pressure at constant pressure surface(pres)

• pressure at constant pressure surface(pres)

SGP/EBBR/E19 - Low Battery Voltage Caused Incorrect Data

Battery voltage less than 10.5 V caused much data to be questionable or incorrect.

• pressure at constant pressure surface(pres)
• scalar wind speed(wind_s)
• Reference Thermistor Temperature(tref)
• specific humidity(q)
• Time offset from midnight GMT(time)
• top air temperature(tair_top)
• temperature of the top humidity sensor chamber(thum_top)
• bottom vapor pressure(vp_bot)
• wind direction (relative to true north)(wind_d)
• top vapor pressure(vp_top)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• bottom relative humidity(hum_bot)
• Resultant wind speed(res_ws)
• temperature of the bottom humidity sensor chamber(thum_bot)
• bottom air temperature(tair_bot)
• top relative humidity(hum_top)
• Home signal(home)

• Right relative humidity(mv_hum_r)
• Soil heat flow 1(mv_hft1)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Soil temperature 1(rr_ts1)
• Soil heat flow 3(mv_hft3)
• Atmospheric pressure(mv_pres)
• Soil temperature 2(rr_ts2)
• Soil heat flow 2(mv_hft2)
• Left air temperature(tair_l)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Soil moisture 5(r_sm5)
• Soil temperature 4(rr_ts4)
• Net radiation(mv_q)
• scalar wind speed(wind_s)
• Reference temperature(rr_tref)
• Soil moisture 2(r_sm2)
• Soil temperature 5(rr_ts5)
• Left relative humidity(mv_hum_l)
• Soil temperature 3(rr_ts3)
• Home signal(mv_home)
• Wind direction (relative to true north)(mv_wind_d)
• Soil moisture 4(r_sm4)
• Right air temperature(tair_r)
• Soil moisture 3(r_sm3)
• Soil heat flow 4(mv_hft4)
• Soil heat flow 5(mv_hft5)
• Soil moisture 1(r_sm1)

• 0-5 cm integrated soil temperature, site 5(ts5)
• 0-5 cm integrated soil temperature, site 3(ts3)
• Reference Thermistor Temperature(tref)
• 5 cm soil heat flow, site 2(shf2)
• Soil moisture 1 (mass water/mass dry soil)(sm1)
• Soil moisture 2 (mass water/mass dry soil)(sm2)
• 0-5 cm integrated soil temperature, site 4(ts4)
• Exchange mechanism position indicator (15 to 30 min)(home_30)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• Soil heat capacity 5(cs5)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• Soil heat capacity 3(cs3)
• Soil moisture 4 (mass water/mass dry soil)(sm4)
• corrected sensible heat flux(h)
• scalar wind speed(wind_s)
• temperature of the top humidity sensor chamber(thum_top)
• top air temperature(tair_top)
• Soil heat capacity 4(cs4)
• bottom relative humidity(hum_bot)
• soil heat flow at the surface 4(g4)
• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• 0-5 cm integrated soil temperature, site 2(ts1)
• top vapor pressure(vp_top)
• Resultant wind speed(res_ws)
• average surface soil heat flow at the surface(ave_shf)
• Soil moisture 5 (mass water/mass dry soil)(sm5)
• latent heat flux(e)
• wind direction (relative to true north)(wind_d)
• soil heat flow at the surface 2(g2)
• temperature of the bottom humidity sensor chamber(thum_bot)
• Soil heat capacity 1(cs1)
• Soil moisture 3 (mass water/mass dry soil)(sm3)
• soil heat flow at the surface 5(g5)
• soil heat flow at the surface 1(g1)
• soil heat flow at the surface 3(g3)
• 5 cm soil heat flow, site 1(shf1)
• bottom vapor pressure(vp_bot)
• Soil heat capacity 2(cs2)
• 0-5 cm change in soil heat storage with time, site 2(ces2)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• 5 cm soil heat flow, site 5(shf5)
• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• top relative humidity(hum_top)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• bottom air temperature(tair_bot)
• specific humidity(q)
• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• 5 cm soil heat flow, site 3(shf3)
• 5 cm soil heat flow, site 4(shf4)
• pressure at constant pressure surface(pres)
• 0-5 cm integrated soil temperature, site 2(ts2)
• 0-5 cm change in soil heat storage with time, site 2(ces1)
• 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4)

SGP/EBBR/E15 - Net Radiometer not level

The EBBR net radiometer at E15 was suspected to be off of level
               because the daily peak net radiation was recorded later than it 
               was recorded by the SIRS.

               Site Ops found the EBBR net radiometer at E15 was significantly 
               off of level (1/2 bubble tipped to the north).  Adjustment of 
               the level improved the comparison of peak time with the 
               co-located SIRS.

               There was no significant effect on the sensible and latent heat 
               fluxes.

• specific humidity(q)

• specific humidity(q)

SGP/EBBR/E22 - Wind Speed Sensor Bearings Worn

Wind speed was too low and/or often at or near zero due to
               worn bearings in the wind speed sensor.  Sensor was replaced
               3/17/04.

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• scalar wind speed(wind_s)

SGP/EBBR/E12  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• scalar wind speed(wind_s)

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

SGP/EBBR/E12  - Wind Direction Frozen Stopped By Ice

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed measurements 
are incorrect.

• standard deviation of wind direction (sigma theta)(sigma_wd)
• Resultant wind speed(res_ws)
• wind direction (relative to true north)(wind_d)

• Resultant wind speed(res_ws)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• wind direction (relative to true north)(wind_d)

SGP/EBBR/E13  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• scalar wind speed(wind_s)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

SGP/EBBR/E13  - Wind Direction Frozen Stopped By Ice

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed measurements 
are incorrect.

• Resultant wind speed(res_ws)
• wind direction (relative to true north)(wind_d)
• standard deviation of wind direction (sigma theta)(sigma_wd)

• standard deviation of wind direction (sigma theta)(sigma_wd)
• wind direction (relative to true north)(wind_d)
• Resultant wind speed(res_ws)

SGP/EBBR/E15  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• scalar wind speed(wind_s)

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

SGP/EBBR/E18  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• scalar wind speed(wind_s)

SGP/EBBR/E18  - Wind Direction Frozen Stopped By Ice

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed measurements 
are incorrect.

• standard deviation of wind direction (sigma theta)(sigma_wd)
• wind direction (relative to true north)(wind_d)
• Resultant wind speed(res_ws)

• wind direction (relative to true north)(wind_d)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• Resultant wind speed(res_ws)

SGP/EBBR/E20  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• scalar wind speed(wind_s)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

SGP/EBBR/E20  - Wind Direction Frozen Stopped By Ice

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed measurements 
are incorrect.

• standard deviation of wind direction (sigma theta)(sigma_wd)
• wind direction (relative to true north)(wind_d)
• Resultant wind speed(res_ws)

• wind direction (relative to true north)(wind_d)
• Resultant wind speed(res_ws)
• standard deviation of wind direction (sigma theta)(sigma_wd)

SGP/EBBR/E22  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• scalar wind speed(wind_s)

SGP/EBBR/E22  - Wind Direction Frozen Stopped By Ice

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed measurements 
are incorrect.

• wind direction (relative to true north)(wind_d)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• Resultant wind speed(res_ws)

• Resultant wind speed(res_ws)
• wind direction (relative to true north)(wind_d)
• standard deviation of wind direction (sigma theta)(sigma_wd)

SGP/EBBR/E4  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• scalar wind speed(wind_s)

SGP/EBBR/E4  - Wind Direction Frozen Stopped By Ice

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed measurements 
are incorrect.

• wind direction (relative to true north)(wind_d)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• Resultant wind speed(res_ws)

• wind direction (relative to true north)(wind_d)
• Resultant wind speed(res_ws)
• standard deviation of wind direction (sigma theta)(sigma_wd)

SGP/EBBR/E27  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• scalar wind speed(wind_s)

SGP/EBBR/E19  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

• scalar wind speed(wind_s)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

SGP/EBBR/E26  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• scalar wind speed(wind_s)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

SGP/EBBR/E26  - Wind Direction Frozen Stopped By Ice

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed measurements 
are incorrect.

• Resultant wind speed(res_ws)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• wind direction (relative to true north)(wind_d)

• standard deviation of wind direction (sigma theta)(sigma_wd)
• Resultant wind speed(res_ws)
• wind direction (relative to true north)(wind_d)

SGP/EBBR/E7  - Wind Speed Frozen Stopped By Ice

The wind speed sensor was frozen stopped by ice from a storm.  The wind speed 
and residual wind speed measurements are incorrect.

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• scalar wind speed(wind_s)

SGP/EBBR/E7 - Tref Problem Causes All Temps. to be Incorrect

The Tref sensor went crazy for this brief period, making all temperature
measurements incorrect.

• Right air temperature(tair_r)
• Left air temperature(tair_l)

• 0-5 cm integrated soil temperature, site 5(ts5)
• top air temperature(tair_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• 0-5 cm integrated soil temperature, site 2(ts1)
• 0-5 cm integrated soil temperature, site 4(ts4)
• temperature of the top humidity sensor chamber(thum_top)
• bottom air temperature(tair_bot)
• Reference Thermistor Temperature(tref)
• 0-5 cm integrated soil temperature, site 2(ts2)
• 0-5 cm integrated soil temperature, site 3(ts3)

• Reference Thermistor Temperature(tref)
• temperature of the top humidity sensor chamber(thum_top)
• top air temperature(tair_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• bottom air temperature(tair_bot)

SGP/EBBR/E2  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• scalar wind speed(wind_s)

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

SGP/EBBR/E8  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• scalar wind speed(wind_s)

SGP/EBBR/E8  - Wind Direction Frozen Stopped By Ice

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed measurements 
are incorrect.

• Resultant wind speed(res_ws)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• wind direction (relative to true north)(wind_d)

• Resultant wind speed(res_ws)
• wind direction (relative to true north)(wind_d)
• standard deviation of wind direction (sigma theta)(sigma_wd)

SGP/EBBR/E9  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition. The bearings
in the sensor appear to be worn, contributing to the problem.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• scalar wind speed(wind_s)

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

• scalar wind speed(wind_s)
• Resultant wind speed(res_ws)

SGP/EBBR/E9  - Wind Direction Frozen Stopped By Ice

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed measurements 
are incorrect.

• wind direction (relative to true north)(wind_d)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• Resultant wind speed(res_ws)

• Resultant wind speed(res_ws)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• wind direction (relative to true north)(wind_d)

SGP/EBBR/E27 - Soil Moisture #5 Insensitive

Soil moisture sensor #5 was insensitive and put out a value of around 30%.

Sensible and latent heat fluxes were not significantly affected by this
small error.

• Soil heat capacity 5(cs5)
• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• soil heat flow at the surface 5(g5)
• Soil moisture 5 (mass water/mass dry soil)(sm5)

SGP/EBBR/E8  - Wind Speed Sensor Frozen Stopped By Icing

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• Resultant wind speed(res_ws)
• scalar wind speed(wind_s)

• scalar wind speed(wind_s)

SGP/EBBR/E8 - AEM Replacement

The AEM at E8 kept hanging in between home positions.

This DQR covers only the period during which the AEM was being
replaced.  

DQRs generally are not issued for AEMs that are not working
as qc flags indicate this clearly.

• bottom air temperature(tair_bot)
• temperature of the bottom humidity sensor chamber(thum_bot)
• top vapor pressure(vp_top)
• top relative humidity(hum_top)
• bottom vapor pressure(vp_bot)
• latent heat flux(e)
• corrected sensible heat flux(h)
• bottom relative humidity(hum_bot)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• top air temperature(tair_top)
• temperature of the top humidity sensor chamber(thum_top)

• temperature of the top humidity sensor chamber(thum_top)
• bottom air temperature(tair_bot)
• bottom vapor pressure(vp_bot)
• bottom relative humidity(hum_bot)
• top air temperature(tair_top)
• top relative humidity(hum_top)
• top vapor pressure(vp_top)
• temperature of the bottom humidity sensor chamber(thum_bot)

• temperature of the bottom humidity sensor chamber(thum_bot)
• Aerodynamic Latent heat flux(ale)
• Best estimate Sensible heat flux(hcomb)
• latent heat flux(e)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• bottom relative humidity(hum_bot)
• top air temperature(tair_top)
• Aerodynamic Sensible heat flux(ah)
• temperature of the top humidity sensor chamber(thum_top)
• Best estimate Latent heat flux(ecomb)
• top relative humidity(hum_top)
• bottom air temperature(tair_bot)
• corrected sensible heat flux(h)
• bottom vapor pressure(vp_bot)
• top vapor pressure(vp_top)

• Right air temperature(tair_r)
• Left air temperature(tair_l)

SGP/EBBR/E19 - Reprocess: Incorrect Net Rad Calibration Coefficient

The net radiometer coefficient installed on 2/5/04 for nighttime (negative voltage 
calibration) was incorrect.

Negative net radiations during the subject period can be multiplied by
0.9419 to get corrected net radiation measurements.  The sensible (H)
and latent heat (LE) fluxes (which are very small at night anyway) can
be recalculated using the following equations (where B is Bowen ratio,
Rn is corrected net radiation, and G is soil heat flow):

LE = -(Rn + G)/(B + 1)

H = -(Rn + G + LE)

• specific humidity(q)

• latent heat flux(e)
• specific humidity(q)
• corrected sensible heat flux(h)
• Aerodynamic Sensible heat flux(ah)
• Aerodynamic Latent heat flux(ale)

• corrected sensible heat flux(h)
• latent heat flux(e)
• specific humidity(q)

SGP/EBBR/E2 - Soil Heat Flow #1 Spikes Down

Soil heat flow #1 spiked down at times.

Since tightening of connections this is occurring infrequently.  In most
cases, sensible and latent heat fluxes are not affected.

• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• average surface soil heat flow at the surface(ave_shf)
• soil heat flow at the surface 1(g1)
• corrected sensible heat flux(h)
• latent heat flux(e)
• 5 cm soil heat flow, site 1(shf1)

SGP/EBBR/E18 - Pressure Low

Pressure readings suddenly dropped to unrealistic levels.

Sensible Heat Flux was underestimated and Latent Heat Flux
was overestimated because of this problem.

• pressure at constant pressure surface(pres)

• pressure at constant pressure surface(pres)
• latent heat flux(e)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• corrected sensible heat flux(h)