CEOP/EOP-1 MAGS BERMS Hourly Surface Meteorology, Flux, and Radiation Data Set 1.0 Contact Information 1.1 UCAR/JOSS Contact Steven F Williams Data Specialist UCAR/JOSS P.O. BOX 3000 Boulder, CO, USA, 80307-3000 Telephone: 303-497-8987 Facsimile: 303-497-8158 E-Mail Address: sfw@ucar.edu 1.2 MAGS 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: barra@nhrisv.nhrc.sk.ec.gc.ca Alan.Barr@ec.gc.ca 2.0 General Description This data set contains the Coordinated Enhanced Observing Period (CEOP) Enhanced Observing Period 1 (EOP-1) Mackenzie GEWEX [Global Energy and Water Cycle Experiment] Study (MAGS) Boreal Ecosystem Research and Monitoring Sites (BERMS) Hourly Surface Meteorology, Flux, and Radiation Data Set. This data set contains hourly data from three stations for the CEOP EOP-1 time period (01 July 2001 to 30 September 2001). The University Corporation for Atmospheric Research/ Joint Office for Science Support (UCAR/JOSS) did not perform quality control processing on this data set. 3.0 Detailed Data Description 3.1 MAGS BERMS Algorithms 3.1.1 Native format data The BERMS (Boreal Ecosystem Research and Monitoring Sites) project was designed as a 5 year partial follow-up to the BOREAS (Boreal Ecosystem- Atmosphere Study) experiment. The data set documented here includes the near- surface meteorological measurements of three forest biomes in the southern boreal forest of Saskatchewan (referred to as the Southern Study Area in BOREAS). Prior to BERMS, the Saskatchewan Research Council maintained near- surface meteorological stations throughout the BOREAS study area from December, 1993 until December, 1996. After this, the Climate Research Branch in Saskatoon took over the climate monitoring program at two of these stations, Old Aspen and Old Jack Pine. The BERMS climate monitoring program differed somewhat from SRC's program in that the instrumentation was installed on different platforms and the number of variables measured was expanded. In addition to the expanded climate monitoring at Old Aspen and Old Jack Pine, there was also a climate station installed at Old Black Spruce to measure the same variables as at the other two stations. This data set is also available on-line in 30-minute native format at http://www.joss.ucar.edu/ghp/ceopdm/ under the link "CEOP EOP-1 Reference Site Data Sets". 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/data/dataindex.htm. 3.1.1 CEOP/EOP-1 Hourly Surface Meteorology, Flux, and Radiation format data This CEOP/EOP-1 MAGS BERMS Hourly Surface Meteorology, Flux, and Radiation hourly data set was formed by extracting the top of the hour observations from the 30 minute native format data. The data are in UTC time. The U and V wind components were computed from wind speed and direction. The dew point was computed from the temperature and relative humidity. The specific humidity was computed from the surface pressure and calculated dew point. The hourly precipitation was formed by taking the difference between the cumulative value for the current hour and the previous hour. More information regarding this site can be found under the "CEOP Reference Site Station Characteristics" link on the UCAR/JOSS CEOP Data Management page at http://www.joss.ucar.edu/ghp/ceopdm/ . 3.2 Station Information The following is a complete description of the station information provided with this CEOP MAGS BERMS data set. The actual station information is given at the end of this section. Table 1 details the station list parameters. The beginning and ending dates for the period of coverage are in Universal Time Coordinated (UTC). The Identification Type field is network dependent and indicates the source of the Identification field. The Occurrence field is an integer value used to indicate co-located stations. Note that when a particular parameter is unknown for a station, either a blank, a question mark, or all 9's will appear in that parameter's position. For a complete list of Country, State, and County values, refer to the document in the references (Section 5.0). Possible platform types and frequency values are listed in Tables 2 and 3, respectively. Note that only those platform types present in the CEOP EOP-1 data have been listed. Table 4 contains the station information for this CEOP MAGS BERMS data set. Table 1 Parameter Description --------- ----------- Identification ID in data Identification Type Internal ID number type Latitude Station Latitude Longitude Station Longitude Occurrence Station occurrence Lat/Lon Accuracy Number of digits accuracy in lat/lon values Name Expanded station name Commissioned Flag `(C)' indicates commissioned station, `(N)' indicates station which is NOT commissioned Begin Period of Coverage Beginning date of period of coverage (YYYYMMDD) End Period of Coverage End date of period of coverage (YYYYMMDD) Country Country in which station is located State State code County County code UTC offset Hour Offset from UTC time DST switch 'y' indicates station does switch to Daylight Savings Time (DST). 'n' indicates station does not switch to DST Platform type Collection Platform. See Table 2 Reporting Frequency Frequency of data collection Elevation Station elevation Fixed/Mobile flag Flag indicating if station has fixed location. 'f' indicates a fixed station. 'm' indicates a mobile station Table 2 Platform Type Description ------------- ----------- 264 CEOP Reference Site Platform Table 3 Reporting Frequency ------------------- hourly Table 4 Station Information ------------------- Old_Aspen 53 53.62900 -106.20000 0 3 Prince Albert National Park, Saskatchewan (N) 20010701 20011001 CA 99 ??? 0.00 n 264 hourly 600.6 f Old_Black_Spruc 53 53.98700 -105.11700 0 3 White Swan Lake, Prince Albert, Saskatchewan (N) 20010701 20011001 CA 99 ??? 0.00 n 264 hourly 628.9 f Old_Jack_Pine 53 53.91600 -104.69000 0 3 Narrow Hills Provincial Park, Saskatchewan (N) 20010701 20011001 CA 99 ??? 0.00 n 264 hourly 579.3 f 3.3 Detailed Format Description The CEOP EOP-1 MAGS BERMS Hourly Surface Meteorology, Flux, and Radiation Data Set contains 10 metadata parameters and 22 data parameters. The metadata parameters describe the station location and time at which the data were collected. The time of observation is reported both in Universal Time Coordinated (UTC) Nominal and UTC actual time. Days begin at UTC 0100 and end at UTC 0000 the following day. Note that missing parameter values are indicated by "-999.99". The table below details the data parameters in each record. Parameters Units ---------- ----- Date of Observation UTC Nominal Time of Observation UTC Nominal Date of Observation UTC Actual Time of Observation UTC Actual CSE Identifier Abbreviation of CSE name Reference Site Identifier Abbreviation of Site name Station Identifier Reference Site Dependent Latitude Decimal degrees, South is negative Longitude Decimal degrees, West is negative Station Elevation Meters Station Pressure Hectopascals (mb) Dry Bulb Temperature Celsius Dew Point Celsius Relative Humidity Percent Specific Humidity g/kg Wind Speed m/s Wind Direction Degrees U Wind Component m/s V Wind Component m/s Total Precipitation mm Snow Depth cm Sensible Heat Flux W/m2 Latent Heat Flux W/m2 Incoming Shortwave Radiation W/m2 Outgoing Shortwave Radiation W/m2 Incoming Longwave Radiation W/m2 Outgoing Longwave Radiation W/m2 Net Radiation W/m2 Skin Temperature Celsius CO2 Flux uMoles/m2/s Incoming PAR uMoles/m2/s Outgoing PAR uMoles/m2/s 3.4 Data Remarks This data set contains only the hourly observations for the CEOP EOP-1 time period. This data set is also available on-line in native format at http://www.joss.ucar.edu/ghp/ceopdm/ under the link CEOP EOP-1 Reference Site Data Sets. 4.0 Quality Control Processing UCAR/JOSS performed limited gross limit and visual checks on this data set. No data values have been changed. 5.0 References Bolton, D., 1980: The computation of equivalent potential temperature., Mon. Wea. Rev., 108, pp 1046-1053. Department of Commerce - National Institute of Standards and Technology (NIST), 1985: Federal Information Processing Standards Publication 10-3 Countries, Dependencies, & Areas of Special Sovereignty. Department of Commerce - NIST, Washington, DC. Environment Canada, cited 2002: BERMS Boreal Ecosystem Research and Monitoring Sites Home Page [Available on-line from http://berms.ccrp.ec.gc.ca/] Wexler, A., and W. A. Wildhack, 1963: Humidity and Moisture. Vol. 3: Fundamentals and Standards. Reinhold Publ. Corp., 562 pp.