SMEX02 Iowa Satellite Vegetation and Water Index (NDVI and NDWI) Data

Data Contributors

JACKSON, THOMAS
COSH, MICHAEL

Parameters

BIOMASS
SOIL BULK DENSITY
SOIL MOISTURE/WATER CONTENT
VEGETATION COVER
VEGETATION INDEX

Instruments

ETM+ : ENHANCED THEMATIC MAPPER PLUS
TM : THEMATIC MAPPER

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 Normalized Difference Vegetation Index (NDVI) and Normalized Difference Water Index (NDWI) data, derived from Landsat 5 Thematic Mapper (TM) and Landsat 7 Enhanced Thematic Mapper plus (ETM+) imagery. The 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 south-central Iowa, USA.

Data are provided as flat binary files and are available via FTP.

AMSR-E is an instrument launched aboard NASA's Aqua Satellite on 4 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.

Data Citation

Njoku, E. 2003. SMEX02 Passive and Active L and S band System (PALS) Data. Boulder, CO: National Snow and Ice Data Center. Digital media.