National Snow & Ice Data Center Distributed Active Archive Center

nasa-nsidcdaac-0189

SMEX02 Vegetation Water Content, Iowa Regional and Walnut Creek Watershed

This data set is part of the Soil Moisture Experiment 2002 (SMEX02) project, which is associated with the Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) validation project. It consists of Vegetation Water Content (VWC) data. VWC was derived from Normalized Difference Water Index (NDWI), which was derived from Landsat 5 Thematic Mapper (TM) and Landsat 7 Enhanced Thematic Mapper plus (ETM+) imagery. The TM satellite data were acquired during select dates in June and July 2002. These data cover the SMEX02 Walnut Creek watershed and the regional Iowa study areas in Iowa, USA. Data are provided as flat binary files and are available via FTP. Data must be divided by 25.5 to obtain the actual vegetation water content in kg/m³. 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.

http://nsidc.org/data/NSIDC-0189

Identified by : NSIDC-0189

This dataset was released on September 30, 2003.

The time range for this dataset is June 25, 2003 to July 18, 2003.

The spatial range for this dataset is 41.694° to 42.732° latitude, and -93.841° to -93.161° longitude. map (center)

This dataset uses data from an instance of the enhanced-thematic-mapper-plus instrument on the landsat-7 platform.
This dataset uses data from an instance of the thematic-mapper instrument on the landsat-5 platform.
DOI : 10.5067/0X2GRYXDM3EA
Also known as :

• dataset oai:nsidc/NSIDC-0189 (nsidc lexicon)