CEOP/EOP-1 GAPP SGP Hourly Soil Heat Flux, Moisture, and Temperature 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: firstname.lastname@example.org 1.2 ARM EBBR Contact David R. Cook Argonne National Laboratory 9700 South Cass Avenue Building 203 Argonne, IL 60439. Phone: (630) 252-5840 FAX: (630) 252-5498 E-mail: email@example.com 1.3 ARM SWATS Contact Chad Bahrmann CIMMS University of Oklahoma 100 E. Boyd St., Rm. 1110 Norman, OK 73019-1011 Phone: (405) 325-1855 Fax: (405) 325-7614 Email: firstname.lastname@example.org 2.0 General Description This data set contains the Coordinated Enhanced Observing Period (CEOP) Enhanced Observing Period 1 (EOP-1) Global Energy and Water Cycle Experiment (GEWEX) Americas Prediction Project (GAPP) Southern Great Plains (SGP) Hourly Soil Heat Flux, Moisture, and Temperature Data Set. This data set contains hourly soil heat flux (0, 5cm depth), soil temperature (5, 15, 25, 35, 60, 85, 125, 175cm depths), and soil moisture (5, 15, 25, 35, 60, 85, 125, 175cm depths) data. This data set contains hourly data from 24 Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) 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 The data comprising this data set are also available on-line in native format at www.joss.ucar.edu/ghp/ceopdm/archive/eop1_data/index.html under the heading CEOP EOP-1 "Native Format" Reference Site Data Sets, GAPP. This composite data set is composed of data from two sources which report data at different frequencies. It was developed by the merging of soil heat flux data from the Energy Balance Bowen Ratio (EBBR), and soil temperature and moisture data from the Soil Water and Temperature System (SWATS). These stations are located at many of the ARM SGP Extended Facilities in southern Kansas and northern Oklahoma. 3.1 SGP Algorithms The algorithms used to produce the GAPP SGP native format data are not currently available. This hourly data set was formed by extracting the top of the hour observations from the native format data. More information regarding the sites can be found under the CEOP Reference Site Station Characteristics link on the UCAR/JOSS CEOP Data Management page at www.joss.ucar.edu/ghp/ceopdm/. 3.2 Station Information The following is a complete description of the station information provided with this CEOP GAPP SGP data set. Table 1 details the station list parameters. GAPP SGP values for each parameter are listed in brackets at the end of each line. 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 1 Parameter Description --------- ----------- Identification ID in data. [SGP] Identification Type Internal ID number type.  Latitude Station Latitude. [48.31000] Longitude Station Longitude. [-105.10000] Occurrence Station occurrence.  Lat/Lon Accuracy Number of digits accuracy in lat/lon values.  Name Expanded station name. [GAPP:SGP] Commissioned Flag `(C)' indicates commissioned station, `(N)' indicates station which is NOT commissioned. [(N)] 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. [US] State State code.  County County code. [???] UTC offset Hour Offset from UTC time. [0.00] DST switch 'y' indicates station does switch to Daylight Savings Time (DST). 'n' indicates station does not switch to DST. [n] Platform type Collection Platform. See Table 2.  Reporting Frequency Frequency of data collection. [30min] Elevation Station elevation.  Fixed/Mobile flag Flag indicating if station has fixed location. 'f' indicates a fixed station. 'm' indicates a mobile station. [f] Table 2 Platform Type Description ------------- ----------- 264 CEOP Reference Site Platform Table 3 Reporting Frequency ------------------- varies by site 3.3 Detailed Format Description The CEOP EOP-1 GAPP SGP Hourly Soils Data Set contains 11 metadata parameters followed by parameter values for 26 soils depths (i.e., 0,2,3,4,5,6,7,8,10,15,16,20,25,30,32,35,40,45,50, 60,64,85,100,125,150,175 cm). The metadata parameters describe the station location and time at which the data were collected and the record type. The record type describes the type of data found on that record and is described in the Table 4 below. 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 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 Record Type Type of data in current record. See Table 4. Parameter Values Parameter Values for 26 depths. Table 4 Record Type Description ------------- ----------- SoilHtFlux Soil heat flux in W/m2 SoilMoist Volumetric soil water content in percent SoilTemp Soil temperature in Celsius 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. 4.1 ARM Data Quality Reports 4.2 ARM EBBR Data Quality Reports 4.2.1 ARM_DQR_20010401_20010823.html 4.2.2 ARM_DQR_20010401_20011005.html 4.2.3 ARM_DQR_20010401_20010823.html 4.2.4 ARM_DQR_20010401_20010823.html where ARM_DQR is the type of file 20010401 is the start date of the earliest quality report in the file 20010823 is the end date of the latest quality report in the file 4.3 ARM SWATS Data Quality Reports None. 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. Energy Balance Bowen Ratio (EBBR), www.arm.gov/docs/instruments/static/ebbr.html; September 6, 1999 FIFE Bowen Ratio Surface Flux: Smith Data Set Guide Document, http://www-eosdis.ornl.gov/FIFE/Datasets/Surface_Flux/Bowen_Ratio_Smith.html; September 8, 1999 Wexler, A., and W. A. Wildhack, 1963: Humidity and Moisture. Vol. 3: Fundamentals and Standards. Reinhold Publ. Corp., 562 pp.