SMEX03 ENVISAT ASAR Browse Images for Soil Moisture

Browse images from the ENVISAT Advanced Synthetic Aperture Radar (ASAR) instrument were collected over Alabama, Georgia, and Oklahoma as part of the 2003 Soil Moisture Experiment (SMEX03). The dataset is provided by the National Snow and Ice Data Center (NSIDC) and focuses on regional study areas in the United States. Data acquisition occurred during the 2003 experiment campaign.

Use Cases

• Analyzing radar backscatter signatures to estimate surface soil moisture content.
• Serving as visual reference data for coordinating ground measurements during the SMEX03 field campaign.
• Supporting the validation of soil moisture models and satellite-derived products for the specified regions.

Strengths

• Data originates from a coordinated, field-validated experiment (SMEX03) designed for soil moisture research.
• Provides geospatial coverage over three distinct regional study areas (Alabama, Georgia, Oklahoma).
• Hosted on multiple authoritative platforms (NASA Earthdata, Data.gov), indicating recognized importance.

Limitations

• The dataset consists of browse images, not the primary quantitative radar data, limiting analytical depth.
• Critical metadata conflicts exist: last updated date is reported as both 2003-07-15 and 2026-03 13 across sources.
• No column details, row counts, or file sizes are provided, obscuring the dataset's structure and volume.

Provenance

Source

National Snow and Ice Data Center (NSIDC).

Collection Method

Acquired by the ENVISAT Advanced Synthetic Aperture Radar (ASAR) instrument during the SMEX03 field campaign.

Time Range

2003

Freshness

2003-07-15 23:59:59.999000

Geography

Regional study areas in Alabama, Georgia, and Oklahoma, USA.