SGP97 Surface: NOAA/ATDD Little Washita, Oklahoma Long Term Flux Site

The Southern Great Plains 1997 (SGP97) Hydrology Experiment originated from an interdisciplinary investigation, "Soil Moisture Mapping at Satellite Temporal and Spatial Scales" (PI: Thomas J. Jackson, USDA Agricultural Research Service, Beltsville, MD) selected under the NASA Research Announcement 95-MTPE-03. The temporal coverage for this dataset is as follows: Begin datetime: 1997-05-31 00:00:00, End datetime: 1997-08-09 23:59:59. NOAA/ATDD (Tilden Meyers) started operation of a long term flux monitoring site near the Little Washita watershed in Oklahoma in 1996. Half-hourly observations of wind speed and direction, air temperature, relative humidity, pressure, incoming global radiation, incoming and outgoing visible radiation, net radiation, ground heat flux, precipitation, wetness, skin temperature, soil temperature (at 2, 4, 8, 16, 32 and 64 cm), average wind vector speed, kinematic shear stress, streamwise velocity variance, crosswind velocity variance, vertical velocity variance, sensible heat flux, latent energy flux, CO2 flux and soil moisture at 20 cm (started 5 June 1997).

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Source: Geodata Harvest

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Field	Value
Tags	Environment farming Soil radar atmospheric pressure Soil Temperature land heat capacity heat flux wind speed wind direction surface air temperature humidity visible radiance net radiation Precipitation carbon dioxide watersheds hydrology
Modified	2022-05-25
Release Date	2020-08-25
Identifier	SGP97NOAAflux_JJM_2015-04-27_0942
Spatial / Geographical Coverage Area	POLYGON ((-98 35, -97.5 35, -97.5 34.5, -98 34.5))
Publisher	National Center for Atmospheric Research / Earth Observing Laboratory
Temporal Coverage	May 31, 1997 to August 9, 1997
License	Creative Commons Attribution
Contact Name	Meyers, Tilden
Contact Email	tilden.meyers@noaa.gov
Public Access Level	Public
Program Code	005:040 - Department of Agriculture - National Research
Bureau Code	005:18 - Agricultural Research Service
Source ID	SGP97NOAAflux_JJM_2015-04-27_0942

Harvested from Geodata Harvest
Harvest Source Title	Geodata Harvest
Harvest Source URI	https://geodata.nal.usda.gov/geonetwork/srv/eng/csw
Last Harvest Performed	Thu, 04/22/2021 - 01:01

Extended Metadata:

Field	Value
Authors	Meyers, Tilden
Peer Reviewed	No
Intended Use	SGP97 is set in a subhumid environment during early summer. Within this setting, the objectives of SGP97 are (1) to establish that the retrieval algorithms for surface soil moisture developed at higher spatial resolution using truck- and aircraft-based sensors can be extended to the coarser resolutions expected from satellite platforms; (2) to verify spatial-temporal estimators of soil moisture and to examine the utility of pedotransfer function in hydrologic modeling; (3) to examine the feasibility of inferring soil moisture and temperature profiles using surface observations in conjunction with in situ measurements, and (4) to examine the effect of soil moisture on the evolution of the atmospheric boundary layer and clouds over the Southern Great Plains during the warm season.
Funding Sources	Agricultural Research Service National Science Foundation
Product Type	Dataset
Related Content	Web link to data

Field	Value
ISO Topic(s)	climatologyMeteorologyAtmosphere environment farming
State or Territory	Oklahoma
National Agricultural Library Thesaurus Term	soil water satellites watersheds wind speed air temperature relative humidity heat transfer soil temperature shear stress skin temperature variance carbon dioxide summer hydrologic models temperature profiles Great Plains region warm season
Ag Data Commons Keywords	Agroecosystems & Environment Agroecosystems & Environment Atmosphere Agroecosystems & Environment Soil
Program	Long-Term Agroecosystem Research - LTAR Southern Plains

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