Data Set ID:

SMEX03 Ancillary Soil Characteristics Data, Alabama, Version 1

The SMEX03 Ancillary Soil Characteristics data set contains data for the regional study areas of Alabama, Georgia, and Oklahoma, USA as part of the 2003 Soil Moisture Experiment (SMEX03). The original data were extracted from a multi-layer soil characteristics database for the conterminous United States and generated using Environmental Systems Research Institute (ESRI) ArcMap software for each regional study area. Parameters for this data set include available water capacity, bulk density, permeability, porosity, rock fragment class, rock fragment volume, percent sand, percent clay, and texture class. The temporal coverage is approximate, as these data are representative of the conditions present in each regional study area during the general timeline of the SMEX03 campaign. The total volume for these data sets is approximately 2.8 gigabytes. Data are provided in 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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Geographic Coverage

Data Set Tabs

Temporal Coverage:
  • 2003-06-01 to 2003-07-31
Temporal Resolution:
Not specified
Sensor(s): Not specified
Spatial Coverage:
  • N: 35.19, S: 34.66, E: -87.08, W: -87.77

Spatial Resolution:
Not Specified
  • Soils > Soil Bulk Density
  • Soils > Soil Classification
  • Soils > Soil Moisture/Water Content
  • Soils > Soil Porosity
  • Soils > Soil Respiration
  • Soils > Soil Texture
Data Format(s):
  • ASCII Text (.txt)
Data Contributor(s): Michael Cosh

We kindly request that you cite the use of this data set in a publication using the following citation. For more information, see Use and Copyright.

Cosh, M. and J. Birch. 2008. SMEX03 Ancillary Soil Characteristics Data, Alabama, Version 1. [indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center.

Questions? Please contact:

NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Contact Address:
National Snow and Ice Data Center
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA