JPSS-2 CrIS IMG: Collocated VIIRS level 1 / cloud mask statistical summary V3.0 (SNDRJ2CrI

Joint Polar Satellite System-2's Cross-track Infrared Sounder (CrIS) Level 1B radiance data is supplemented by collocated Visible Infrared Imaging Radiometer Suite (VIIRS) statistics. The IMG product aggregates VIIRS radiance, reflectance, and cloud mask values for each CrIS field of view, providing a matchup between hyperspectral sounder and high-resolution imager data. NASA provides this data, with files constructed on six-minute boundaries.

Use Cases

• Develop cloud detection algorithms based on VIIRS cloud mask statistics collocated with CrIS footprints.
• Validate hyperspectral atmospheric retrievals using high-resolution VIIRS radiance and reflectance data.
• Perform cross-sensor calibration studies based on the matchup between CrIS and VIIRS observations.
• Analyze spatial variability within a CrIS footprint using aggregated VIIRS pixel statistics.

Strengths

• Hyperspectral radiance data from CrIS includes 2,223 channels across shortwave, midwave, and longwave infrared bands.
• VIIRS provides 22 imaging and radiometric bands covering wavelengths from 0.41 to 12.5 microns.
• Data is collocated at the field-of-view level, with each CrIS field-of-regard containing 9 FOVs arranged in a 3x3 array.

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

Satellite measurements from the JPSS-2 (NOAA-21) platform.

Freshness

Last updated 2026-03-13 01:29:26.291884; freshness should be verified.

Geography

Global coverage from polar orbiting satellite.