JPSS-1 CrIS IMG_COL: VIIRS Pixel Colocation Indices

JPSS-1 CrIS IMG_COL data provides array indices for collocating VIIRS pixel observations within each CrIS instrument footprint. The dataset is produced by NASA's GES DISC and contains indices for VIIRS pixels across its 22 imaging bands. The data is constructed on six-minute boundaries and is associated with the NOAA-20 satellite.

Use Cases

• Fusing infrared sounder and imaging radiometer data based on the colocation indices.
• Analyzing cloud properties by combining CrIS spectral data with VIIRS imagery.
• Improving sea surface temperature retrievals using colocated VIIRS and CrIS observations.
• Validating atmospheric models with spatially aligned multi-instrument satellite data.

Strengths

• Contains indices for colocating VIIRS pixels across its 22 imaging bands.
• CrIS data includes 2,223 spectral channels across shortwave, midwave, and longwave infrared ranges.
• Data products are constructed on consistent six-minute boundaries.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Data collected by the Cross-track Infrared Sounder (CrIS) instrument on the JPSS-1/NOAA-20 satellite.

Freshness

Last updated 2026-03-13 01:22:03.532442; freshness should be verified.

Geography

Global coverage from the polar-orbiting satellite.