JPSS-1 ATMS Level 1B Brightness Temperature Measurements

Advanced Technology Microwave Sounder Level 1B data files contain brightness temperature measurements from the NOAA-20 satellite. The instrument is a 22-channel mm-wave radiometer scanning cross-track with a spatial resolution of 16 km to 75 km at nadir. Data products are constructed on six-minute boundaries by NASA's Goddard Earth Sciences Data and Information Services Center.

Use Cases

• Calibrating atmospheric models based on brightness temperature measurements across 22 channels
• Analyzing cross-track scanning patterns based on the 8/3 second scan period synchronized with CrIS
• Mapping geospatial temperature data based on the 135x96 pixel array with 22-channel depth

Strengths

• Data includes 22 distinct microwave frequency channels centered at specific GHz ranges
• Scanning is synchronized with the Cross-track Infrared Sounder using a spacecraft-provided pulse
• Instantaneous spatial resolution at nadir is specified as 16 km, 32 km, or 75 km depending on channel

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 ATMS instrument on the NOAA-20 satellite orbiting at about 830 km altitude.

Freshness

Last updated 2026-03-13 01:22:24.552302; freshness should be verified

Geography

Global coverage from satellite cross-track scanning.