SMEX03 Vegetation Water Content Data for Oklahoma

Vegetation Water Content data derived from Landsat 5 TM and Landsat 7 ETM+ imagery for two Oklahoma study areas during the Soil Moisture Experiment 2003. The dataset is provided by NASA's National Snow and Ice Data Center, but its documentation was supplied solely by the Principal Investigators. Platforms show conflicting last update dates, with one indicating 2003 and another listing 2026.

Use Cases

• Calibrating and validating soil moisture models using derived Vegetation Water Content.
• Analyzing spatial patterns of vegetation health and water stress across Oklahoma North and South study areas.
• Studying the relationship between the Normalized Difference Water Index and in-situ soil moisture measurements.

Strengths

• Data is derived from established satellite platforms: Landsat 5 Thematic Mapper and Landsat 7 Enhanced Thematic Mapper.
• Focuses on two specific regional study areas (Oklahoma North and Oklahoma South) for targeted analysis.
• Cross-platform presence on Data.gov and NASA Earthdata signals recognized importance for soil moisture research.

Limitations

• Critical metadata conflicts exist: the NASA Earthdata source lists a last update of 2003-07-10, while Data.gov sources list 2026-03 12.
• Documentation was provided solely by Principal Investigators and not reviewed by NSIDC, limiting support.
• No column names, row counts, or file sizes are provided on any platform, hindering technical assessment.

Provenance

Source

National Aeronautics and Space Administration (NASA), National Snow and Ice Data Center (NSIDC).

Collection Method

Vegetation Water Content derived from the Normalized Difference Water Index calculated from Landsat satellite imagery.

Time Range

2003 (SMEX03 campaign period).

Freshness

2026-03-12 21:18:42.054977

Geography

Two Soil Moisture Experiment 2003 (SMEX03) regional study areas: Oklahoma North and Oklahoma South.