Regional Hydroclimate Project:
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CPPA (Climate Prediction Program for the Americas; formerly GAPP)
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SGP (Southern Great Plains)
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E22 (Extended Facility 22, Cordell, OK) Station inactive as of 1 December 2009.
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Name:Steve Williams
Affiliation:
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NCAR/EOL
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3450 Mitchell Lane
Boulder, CO 80301
Telephone: (303) 497-8164
Fax: (303) 497-8770
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Latitude: 35.35400 N
Longitude: 98.97700 W
Elevation: 465 m
ARM SGP Overview Map (click for full resolution):
ARM SGP E22 Area Map (click for full resolution):
Google Earth .kmz file of CPPA SGP Reference Site station and radiosonde locations
Station Description:
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General Description:
Gently sloping with southern exposure, in slightly rolling terrain, with a few trees and buildings several hundred meters to the north, and a busy U.S. highway to the east. No landowner information available concerning whether or not the site has ever been plowed. Vegetation is a knee deep when ungrazed, a bit sparse with bare soil showing between clumps; roots were visible through the upper half of the access pits. Good micrometeorological site. Note: the highway is now much closer to the SWATS than when originally installed, approximately 30 m east of the system; the rest of the EF has been moved further west.
Station Operator:
DOE ARM
Vegetation and Land Use:
Dominanat land cover at the measurement location: rangeland (grazed)
Canopy height: No information
Land cover (approximate percentages of each type) within 50 m of the measurement location: no information
Land cover (approximate percentages of each type) within 500 m of the measurement location (1 km pixel): no information
Land cover (approximate percentages of each type) within 12 km of the measurement location (1/4 degree pixel): no information
Seasonal land cover changes: no information
Major changes in land cover at the site during the CEOP data collection period: No information
Slope at the site: no information
Mean elevation and range of elevations in 1 km pixel: No information
Soil Type and Characterization:
Surface Soil Type: silty clay loam (8-12 cm) - 18.73% sand; 51.18% silt; 30.10% clay; 3.12% gravel
Deeper Layers Soil Type:
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Silty clay (15-25 cm) - 5.38% sand; 48.80% silt; 45.82% clay; 0% gravel
Silty clay loam (35-40 cm) - 10.96% sand; 49.22% silt; 39.82% clay; 0% gravel
Surface Soil porosity: no information
Deeper Layers Soil Porosity: no information
Soil infiltration rate: no information
Bulk dry density:
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5-12 cm - 1.47 g/cm3
19-25 cm - 1.45 g/cm3
42-48 cm - 1.52 g/cm3
Saturated hydraulic conductivity: no information
Soil Reference Group(s) (from World Reference Base for Soil Resources): no information
Climate:
No information
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SURFACE METEOROLOGY AND RADIATION INSTRUMENTATION AND DESCRIPTION:
- Station pressure not measured
- Air Temperature not measured
- Dew point not measured
- Relative humidity not measured
- Specific humidity not measured
- Wind speed not measured
- Wind direction not measured
- U wind component not measured
- V wind component not measured
- Precipitation not measured
- Snow depth Not measured.
- Incoming shortwave radiation height unspecified; Precision Spectral Pyranometer
- Outgoing shortwave radiation height unspecified; Precision Spectral Pyranometer
- Incoming longwave radiation height unspecified; Precision Infrared Radiometer
- Outgoing longwave radiation height unspecified; Precision Infrared Radiometer
- Net radiation height unspecified; derived
- Skin temperature not measured
- Incoming Photosynthetically Active Radiation (PAR) not measured
- Outgoing Photosynthetically Active Radiation (PAR) not measured
- Sensible Heat Flux height unspecified; Vaisala Inc., Model #s HMP 35A and HMP 35D at two heights
- Latent Heat Flux height unspecified; Vaisala Inc., Model #s HMP 35A and HMP 35D at two heights
- CO2 Flux not measured
- Soil Heat Flux -0.05 m height; Soil Heat Flow Probes, Radiation & Energy Balance Systems, Inc., Model #s HFT-3, HFT3.1
- Soil Temperature -0.05, -0.15, -0.25, -0.35, -0.60, -0.85, -1.25, and -1.75m heights; Model 229L Matric Potential Sensor, Campbell Scientific, Inc.
- Soil Moisture -0.05, -0.15, -0.25, -0.35, -0.60, -0.85, -1.25, and -1.75m heights; Model 229L Matric Potential Sensor, Campbell Scientific, Inc.
Further information available on soil data here.
Further information available on radiation data here.
METEOROLOGICAL TOWER INSTRUMENTATION AND DESCRIPTION:
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No data of this type at this station.
FLUX INSTRUMENTATION AND DESCRIPTION:
Further information available on flux data here.
SOIL INSTRUMENTATION AND DESCRIPTION:
RADIOSONDE INSTRUMENTATION AND DESCRIPTION:
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No data of this type at this station.
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Web:
Literature:
- CPPA (13 March 2007; Washington , DC, USA)
- GAPP (10 March 2004; Irvine, Calif ornia, USA)
- GAPP (31 March 2003; Berlin, Germany)
- GAPP (6 March 2002; Tokyo, Japan)
- EOP-3/4 and beyond Data Sets and Documentation
- Surface Meteorological Data: Current Status and Browse Plots
- Soil Temperature and Moisture Data: Current Status and Browse Plots
- Flux Data: Current Status and Browse Plots
- Meteorological Tower Data: Current Status and Browse Plots
- EOP-1 Converted Format Data Sets and Documentation
- EOP-1 Native Format Data Sets and Documentation