SNDRJ1IML3CDCCP: Daily Global Atmospheric Profiles from JPSS-1 Satellite

2211 infrared channels from the CrIS instrument, combined with 22 microwave channels from ATMS, are processed by the CLIMCAPS algorithm to produce daily, global atmospheric state profiles. This Level-3 gridded dataset includes surface properties, full-atmosphere profiles of temperature, water vapor, and ozone, and trace gas concentrations for carbon monoxide, methane, and others. Data is provided at a one-degree latitude by one-degree longitude spatial resolution.

Use Cases

• Monitoring global carbon monoxide transport and pollution events based on retrieved column density profiles.
• Assimilating temperature and water vapor profiles into numerical weather prediction models.
• Studying cloud-top characteristics and their radiative impact using infrared effective cloud data.
• Analyzing trends in greenhouse gases like methane and nitrous oxide from satellite observations.
• Validating climate model outputs of atmospheric composition and thermodynamic state.

Strengths

• Derives a full atmospheric state from a high-resolution sensor suite, specifically the 2211-channel CrIS spectrometer.
• Provides a globally gridded, daily product (Level-3) facilitating large-scale spatial and temporal analysis.
• Cross-platform presence on NASA and U.S. government portals indicates established use and importance.

Limitations

• A significant, documented bias exists in the 'co_mmr_midtrop' variable due to an incorrect molecular weight conversion.
• Key metadata such as specific column names, row counts, and file sizes are not provided in the available descriptions.
• The 'last updated' date of 2026-04-09 is a future date, indicating potential metadata freshness or entry errors.

Provenance

Source

National Aeronautics and Space Administration (NASA), Sounder SIPS at JPL.

Collection Method

Data from the CrIS/ATMS instrument suite on the NOAA-20 (JPSS-1) satellite, processed using the CLIMCAPS Optimal Estimation algorithm.

Freshness

Last updated date is listed as 2026-04-09, which is a future date and may be erroneous.

Geography

Global coverage at one-degree latitude by one-degree longitude grid resolution.