SMEX03 ThetaProbe Soil Moisture Data: Alabama

Data Contributors CROSSON, WILLIAM LAYMON, CHARLES Parameters SOILS > ELECTRICAL CONDUCTIVITY SOILS > SOIL MOISTURE/WATER CONTENT Instruments DIELECTRIC PROBE SOIL MOISTURE PROBE

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This data set includes soil moisture data measured with Delta-T Devices’ ThetaProbe ML2 sensors for the Soil Moisture Experiment 2003 (SMEX03), conducted during June and July 2003 in northern Alabama and southern Tennessee, USA. The output parameters include voltage readings from the probe and volumetric soil moisture calculated from the measured voltage. Data were collected at crop, pasture, and forested sites. Data are provided in either a Microsoft Excel spreadsheet file or in three ASCII text files and are available via FTP.

These data were collected as part of a validation study for the Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E). AMSR-E is a mission instrument launched aboard NASA's Aqua Satellite on 04 May 2002. AMSR-E validation studies linked to SMEX are designed to evaluate the accuracy of AMSR-E soil moisture data. Specific validation objectives include assessing and refining soil moisture algorithm performance; verifying soil moisture estimation accuracy; investigating the effects of vegetation, surface temperature, topography, and soil texture on soil moisture accuracy; and determining the regions that are useful for AMSR-E soil moisture measurements.

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Data Citation

The following example shows how to cite the use of this data set in a publication. For more information, see our Use and Copyright Web page.

William Crosson and Charles Laymon. 2007. SMEX03 ThetaProbe Soil Moisture Data: Alabama. [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center.

See Also

• Data sets from SMEX campaigns available at NSIDC.
• USDA Soil Moisture Experiments 2003 Home Page
• AMSR-E standard products available at NSIDC.
• AMSR-E Soil Moisture Validation Data
• AMSR-E/Aqua Data at NSIDC
• USDA Soil Moisture Experiments 2003
• Contact User Services