Data Set ID:

SMEX03 Vegetation Data: Alabama, Version 1

This data set includes data collected over the Soil Moisture Experiment 2003 (SMEX03) area of northern Alabama, USA between 22 June and 1 July 2003. The parameters measured were plant height, plant stand density, phenology, wet biomass, dry biomass, row spacing, and row direction. Data were collected at crop, pasture, and forested sites. Those sites are part of the Alabama MesoNet (ALMNet), which is run by Alabama A&M University's Center for Hydrology, Soil Climatology and Remote Sensing (HSCaRS). Data are provided in an ASCII text file and a Microsoft Excel spreadsheet, 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:
  • 2003-06-22 to 2003-07-01
Temporal Resolution:
Not specified
Spatial Coverage:
  • N: 35.16, S: 34.68, E: -85.78, W: -87.07

Spatial Resolution:
Not Specified
  • Vegetation > Biomass
  • Vegetation > Plant Characteristics
  • Vegetation > Plant Phenology
  • Vegetation > Vegetation Cover
Data Format(s):
  • Microsoft Excel
  • ASCII Text (.txt)
Data Contributor(s): Tommy Coleman, Teferi Tsegaye, Robert Metzl, Marius Schamschula

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.

Coleman, T., T. Tsegaye, R. Metzl, and M. Schamschula. 2008. SMEX03 Vegetation Data: Alabama, Version 1. [indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center.

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Contact Address:
National Snow and Ice Data Center
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA