SNDRSNIML3SDSFSP: Daily High-Resolution Atmospheric Sounder Data

Daily Level-3 gridded atmospheric data provides a 0.5-degree latitude/longitude resolution. The SiFSAP algorithm retrieves geophysical parameters for each sounder Field of View, yielding 3-times higher horizontal spatial resolution and 9-times denser products than standard IR sounder products. Variables likely include atmospheric temperature and water vapor profiles, ozone, cloud properties, and surface temperature.

Use Cases

• Validating atmospheric model outputs based on temperature and water vapor profiles.
• Studying cloud microphysics and radiative effects using cloud property variables.
• Analyzing surface-atmosphere interactions with land surface emissivity and sea surface temperature data.
• Monitoring daily atmospheric composition changes using ozone profile retrievals.

Strengths

• Enhanced spatial resolution from the FOV-based SiFSAP algorithm provides 3x higher horizontal resolution than comparable products.
• Quality control maximizes data yield by including only Level-2 retrievals with QC values of 0 (best) or 1 (good) for each vertical level.
• Cross-platform presence on Data.gov and NASA Earthdata signals established importance and curation.

Limitations

• Critical metadata is missing or conflicting: no column names, row counts, or file sizes are provided across sources.
• The license is ambiguously listed as 'other-license-specified' without a clear definition.
• The 'last updated' date of 2026-04-09 appears to be a future date, indicating potential metadata errors.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Retrievals from Suomi NPP CrIMSS (Cross-track Infrared Microwave Sounder Suite) IR/MW sounder measurements, processed with the SiFSAP algorithm.

Time Range

Daily coverage (specific date range not provided).

Freshness

2026-04-09 22:54:58.212379 (Note: This is a future date, suggesting a metadata error)

Geography

Global, gridded at 0.5-degree latitude by 0.5-degree longitude resolution.