Title: CEOP/EOP-3 MAGS BERMS Surface Meteorological and Radiation Data Set (MAGS_BERMS_Old_Aspen__20021001_20030930.sfc) Contact Information MAGS Contact Bob Crawford Atmospheric Environment Service 4905 Dufferin Street Downsview, ON, M3H 5T4 Telephone: 416-739-4392 Facsimile: 416-739-5700 E-Mail Address: Robert.Crawford@ec.gc.ca BERMS Contact Alan Barr Atmospheric Environment Service National Hydrology Research Centre 11 Innovation Boulevard Saskatoon, SK, S7N 3H5 Telephone: 306-975-4324 Facsimile: 306-975-5793 E-Mail Address: Alan.Barr@ec.gc.ca 1.0 Data Set Overview This data set contains the Coordinated Enhanced Observing Period (CEOP) Enhanced Observing Period 3 (EOP-3) Mackenzie GEWEX [Global Energy and Water Cycle Experiment] Study (MAGS) Boreal Ecosystem Research and Monitoring Sites (BERMS) Surface Meteorological and Radiation Data Set. This data set contains 30 minute temperature, humidity, wind speed and direction, precipitation, snow depth and radiation data from the Old Aspen station in BERMS for the CEOP EOP-3 time period (01 October 2002 to 30 September 2003). Time Period: 01 October 2002 to 30 September 2003 Location: south end of P.A. National Park (lat: 53.629 deg N and long: -106.2 deg W, elevation:600.63m) Data Source: Boreal Ecosystem Research and Monitoring Sites (BERMS) http://berms.ccrp.ec.gc.ca/ Mackenzie GEWEX [Global Energy and Water Cycle Experiment] Study (MAGS) http://www.usask.ca/geography/MAGS/ 2.0 Instrumentation Description CEOP Parameter BERMS Variable Units Temp.Resol. Instr. Type Variable Description -------------- -------------- ----- ----------- ----------- -------------------- Station Pressure Surf_Press (kPa) 30min avg Setra Barometric Pressure; in Hut A, 2m agl. Setra. Air Temperature Air_Temp_AbvCnpy_37m (degC) 30min avg Vaisala HMP Air Temperature; on top of walk-up tower, mounted on north railing 16m above the aspen canopy at 37m agl. Vaisala HMP. Put in Met One ventilator on 10 Jul /01. 13 May/03 sensor put back into gill shield. Dew Point Temperature n/a (degC) -- -- Derived (see http://www.joss.ucar.edu/ghp/ceopdm/refdata_report/eqns.html) Relative Humidity Rel_Hum_AbvCnpy_37m (%) 30min avg Vaisala HMP Relative Humidity; on top of walk-up tower, mounted on north railing 16m above the aspen canopy at 37m agl. Vaisala HMP. Put in Met One ventilator on 10 Jul /01. 13 May/03 sensor put back into gill shield. Specific Humidity n/a (g/kg) -- -- Derived (see http://www.joss.ucar.edu/ghp/ceopdm/refdata_report/eqns.html) Wind Speed Wind_Spd_AbvCnpy_38m (m/s) 30min sample RMY Propeller Wind Speed Tower Top; mounted on a pipe extending above the top platform of the walk-up tower, 17m above the aspen canopy at 38m agl. RM Young Propeller Anemometer. Wind Direction Wind_Dir_AbvCnpy_38m (deg) 30min sample RMY Propeller Wind Direction Tower Top; same as Wind Speed Tower Top. RM Young Propeller Anemometer. U Wind Component n/a (m/s) -- -- Derived (see http://www.joss.ucar.edu/ghp/ceopdm/refdata_report/eqns.html) V Wind Component n/a (m/s) -- -- Derived (see http://www.joss.ucar.edu/ghp/ceopdm/refdata_report/eqns.html) Precipitation ManualCumulative_Precip (mm) 30min avg n/a Manually computed annual accumulated Belfort 5915 or 3000 precipitation. Snow Depth Snow_Depth (cm) daily median SR50 Snow depth; in a 25m clearing, (instrument moved from Far Clearing to Near Clearing 000924). Ultrasonic Depth Gauge. Incoming Shortwave GlobalShortwave_Rad_AbvCnpy_37m (W/m2) 30min avg Kipp & Zonen CM11 Global Shortwave Radiation; on top of walk-up tower, mounted on a railing facing southward 16m above the aspen canopy at 37m agl. Kipp & Zonen CM11. Outgoing Shortwave UpShortwave_Rad_AbvCnpy_31m (W/m2) 30min avg Kipp & Zonen CM11 Upwelling Shortwave Radiation; on an extended boom attached to the walk-up tower, facing southward 10m above the aspen canopy at 31m agl. Kipp & Zonen CM11. Incoming Longwave DerivedDownLongwave_Rad_AbvCnpy_37m (W/m2) 30min avg n/a Derived from body and dome temperatures measured by the downwelling longwave sensor, as well as Global Shortwave (see BERMS main doc for more info). Outgoing Longwave DerivedUpLongwave_Rad_AbvCnpy_31m (W/m2) 30min avg n/a Derived from body and dome temperatures measured by the upwelling longwave sensor , as well as upwelling shortwave (see BERMS main doc for more info). Net Radiation FourWayNet_Rad_AbvCnpy_31m (W/m2) 30min avg n/a Derived by: (downwelling shortwave - upwelling shortwave)+(downwelling longwave - upwelling longwave). Note that these variables have been corrected prior to deriving four way net radiation. Skin Temperature n/a (degC) -- -- n/a Incoming PAR Down_PAR_AbvCnpy_37m (umol/m2/s) 30min avg Li-Cor LI 190SB Downwelling PAR Radiation; on top of walk-up tower, mounted on a railing facing southward 16m above the aspen canopy at 37m. Li-Cor LI190. Outgoing PAR Up_PAR_AbvCnpy_31m (umol/m2/s) 30min avg Li-Cor LI 190SB Upwelling PAR Radiation; on an extended boom attached to the walk-up tower, facing southward 10m above the aspen canopy at 31m agl. Li-Cor LI190. 3.0 Data Collection and Processing This data set is based off the *.AL2 data sets produced by BERMS, as of 16 August 2004. The *.AL2 data was reformated to fit the CEOP Dataset Format definition. Data values calcuated during this reformat have been flagged with an 'I' as given the in the CEOP Dataset Format definitions at: http://www.joss.ucar.edu/ghp/ceopdm/refdata_report/ For a document describing the native format data, including extensive notes on the instrumentation used and data collection algorithms, see the Data Documentation bullet at http://berms.ccrp.ec.gc.ca/e-data.htm. 4.0 Quality Control Procedures This dataset is based off of the *.AL2 data sets produced by BERMS, as such limited gross limit and visual checks have been done on this dataset by BERMS. For a document describing the native format data, including extensive notes on the instrumentation used and data collection algorithms, quality control procedures, see the Data Documentation bullet at http://berms.ccrp.ec.gc.ca/e-data.htm. 5.0 Gap Filling Procedures No gap filling proceedures were used on this dataset. 6.0 Data Remarks A complete document describing known problems with these datasets is available from the Data Documentation bullet at http://berms.ccrp.ec.gc.ca/e-data.htm. 7.0 Reference Requirements Please include an acknowledgement that the data was provided by the Mackenzie GEWEX Study (MAGS) and the Boreal Ecosystem Research and Monitoring Sites (BERMS). 8.0 References Environment Canada, cited 2002: BERMS Boreal Ecosystem Research and Monitoring Sites Home Page [Available on-line from http://berms.ccrp.ec.gc.ca/]