Suomi NPP CrIMSS: Daily Gridded Atmospheric Profiles from CHART Algorithm

1305 infrared channels from the CrIS spectrometer, combined with 22 microwave channels from ATMS, feed a neural network-initialized retrieval algorithm to produce daily global atmospheric profiles. The Climate Heritage AIRS Retrieval Technique (CHART) generates surface temperature, water vapor, ozone, cloud properties, and precipitation estimates on a one-degree latitude/longitude grid. This limited edition collection applies a comprehensive quality control methodology to level-2 data to create consistent level-3 products.

Use Cases

• Monitoring global atmospheric temperature profiles for climate trend analysis.
• Assessing total precipitable water vapor and ozone distribution for weather forecasting.
• Estimating outgoing longwave radiation and cloud top properties for energy budget studies.
• Deriving infrared-based precipitation estimates for hydrological modeling.
• Validating other satellite retrieval systems against the AIRS Version-6.6 heritage algorithm.

Strengths

• Derives from a sophisticated retrieval system with 1305 spectral channels and a neural network initial guess.
• Applies a comprehensive quality control methodology to ensure profile integrity to the surface.
• Provides a wide array of geophysical parameters, including full atmospheric profiles and surface properties.
• Is hosted by the authoritative source, the National Aeronautics and Space Administration.

Limitations

• Key metadata such as row count, file size, and specific column names are unavailable across all sources.
• Sources conflict on the last updated date, with one listing 2015 and another listing 2026, creating uncertainty about data currency.
• The license is ambiguously listed as 'other-license-specified' without further details.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Satellite remote sensing data from the Suomi NPP platform's CrIS and ATMS instruments, processed by the CHART algorithm.

Freshness

2026-04-09 22:54:43.249576

Geography

Global, gridded to one degree latitude by one degree longitude.