NASA NPP-JPSS Project: ATMS and CrIS Satellite Sensor Data from NOAA-20

Advanced Technology Microwave Sounder (ATMS) Level 1B data contains brightness temperature measurements from a 22-channel mm-wave radiometer on the NOAA-20 satellite. Cross-track Infrared Sounder (CrIS) Level 1B Full Spectral Resolution data contains radiance measurements across 2,223 infrared channels on the same platform. Data products are constructed on six-minute boundaries and are available via AWS Open Data under a CC-BY-4.0 license.

Use Cases

• Assimilating brightness temperature data for numerical weather prediction models based on ATMS measurements.
• Retrieving atmospheric temperature and moisture profiles based on CrIS infrared spectral radiances.
• Calibrating and validating climate models using cross-track scanned satellite observations.
• Developing algorithms for cloud detection and characterization using multi-channel radiometer data.

Strengths

• ATMS provides measurements in six distinct frequency bands, including channels at 23, 31, 50-58, 89, 66, and 183 GHz.
• CrIS offers high spectral resolution with 2,223 channels across shortwave, midwave, and longwave infrared regions.
• Scanning is synchronized between ATMS and CrIS instruments using a spacecraft-provided pulse.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale ML tasks.
• Last update date is unknown; freshness unverified.

Provenance

Source

NASA NPP-JPSS Project, likely via the GES DISC.

Collection Method

Measurements from the ATMS and CrIS instruments aboard the Joint Polar Satellite System-1 (JPSS-1/NOAA-20) satellite.

Time Range

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Freshness

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Geography

Global coverage from a polar-orbiting satellite at approximately 830 km altitude.