GCIP/ESOP-98 Rosemount, MN Surface Meteorological and Radiation Data Set ------------------------------------------------------------------------ 1.0 General Information This data set was provided to UCAR/JOSS by Dr. John Baker Soil Scientist at the USDA/ARS and an Adjunct Associate Professor at the Department of Soil, Water, and Climate at the University of Minnesota. For further information on these data please contact him via e-mail at jbaker@soils.umn.edu or via phone at (612) 625-4249. 2.0 Site Location The Rosemount field site is located at: Latitude Longitude Elevation (msl) ----------- ----------- ----------------- 44 42' 51.50" N 93 5' 23.66" W 293.57 m 3.0 Instrumentation Until 14 April 1998 (Julian day 104) the instrumentation was mounted on a mast that ran in an east-west direction (the western most pole of the mast is at the latitude/longitude/elevation as in Section 2.0) as follows (Location specifies the distance from the western most pole of the mast): Parameter Equipment Height Location ------------------------------------------------------------------- Air Temperature Vaisala Relative Humidity HMP35C 2 m 4 m East Windspeed R. M. Young anemometer 2 m 6 m East Incoming Solar Kipp & Zonen 3 m 3 m East & Reflected Solar CM14 Albedometer 3 m South Incoming Longwave Eppley PIR pyrogeometer 4 m 2 m East Outgoing Longwave Eppley PIR pyrogeometer 3 m 3 m East & 3 m South After 14 April 1998 (Julian day 104) the instruments were transferred to a 10 m tower just to the east of the previous location. Here Location signifies the distance away from the base of the 10 m tower (there is no lat/lon yet available for the tower). Parameter Equipment Height Location ------------------------------------------------------------------- Air Temperature Vaisala Relative Humidity HMP35C 3 m Windspeed R. M. Young anemometer 10 m Incoming Solar Eppley 8-48 pyranometer 3 m 2 m East Reflected Solar Eppley 8-48 pyranometer 3 m 3 m South Incoming Longwave Eppley PIR pyrogeometer 3 m 2 m East Outgoing Longwave Eppley PIR pyrogeometer 3 m 3 m South 4.0 Data Set Information Field data measured at Rosemount, MN for the period 1 October 1997 (Julian day 274) to 31 May 1998 (Julian day 151) can be found in the following comma delineated files: Rmain.csv- 44.71430518 N, 93.08990526 W 1. Year 2. Julian Day of Year (1-365) 3. Time of Day (Hr:Min) 4. Air temperature (C), Vaisala HMP 35D 5. Relative humidity (%), Vaisala HMP 35D 6. Wind speed @ 2m (m/s), R.M. Young 03101 Wind Sentry 7. Incoming solar radiation (W/m^2), Eppley PIR 8. Reflected solar radiation (W/m^2), Eppley PIR 9. Incoming longwave radiation (W/m^2), Kipp & Zonen CM14 Albedometer 10. Outgoing longwave radiation (W/m^2), Kipp & Zonen CM14 Albedometer 5.0 Quality Control Information These data were quality assured and quality controlled at the University of Minnesota, UCAR/JOSS has not changed these data in any way, and has conducted no quality control on this data set. Reasons for missing or bad data- 1. 274, 1997 to 277, 1997- battery low on water and mouse infestation at AC lines data replaced by information obtained at Mark Seeley's weather station at same location 2. 274, 1997 to 295, 1997- wind speed anemometer @ 2m is below corn canopy, replaced with data from anemometer @ 3m of Mark Seeley's weather station at same location 2. 361,1997- battery voltage low, caused by bad connection between charger and battery during installation of Campbell 615 soil moisture probes, data replaced by information obtained at Mark Seeley's weather station at same location 3. 16, 1998- changing equipment and reprogramming datalogger, data replaced by information obtained at Mark Seeley's weather station at same location 4. 45, 1998 to 62, 1998- campbell multiplexer starting to go bad from moisture corrosion, channels pertaining to solar radiation are directly affected, incoming is replaced by data from Mark Seeley's Li-Cor silicon radiometer and reflected is corrected by assuming nighttime radiation to be zero and bootstrapping down the daytime data 5. 62, 1998 to 64, 1998- campbell multiplexer totally failed, data replaced by information obtained at Mark Seeley's weather station at same location