JPSS-1 CrIMSS: Atmospheric State Profiles from CLIMCAPS

Sounder SIPS: JPSS-1 CrIMSS Level 2 provides atmospheric state profiles at standard pressure levels derived from the CLIMCAPS V2.1 algorithm. The dataset includes gas mixing ratios, column totals, surface values, tropopause properties, and relative humidity with quality flags. It is generated from Cross-track Infrared Sounder/Advanced Technology Microwave Sounder (CrIS/ATMS) instrument data on the JPSS-1 satellite, using MERRA-2 reanalysis as a first-guess.

Use Cases

• Analyzing vertical profiles of atmospheric temperature and humidity for weather model validation.
• Monitoring tropospheric ozone and other gas mixing ratios for air quality studies.
• Investigating cloud properties and cloud top temperature from satellite sounder data.
• Assessing sea surface skin temperature and surface thermal properties over oceans.
• Studying tropopause altitude and properties for upper atmospheric dynamics.

Strengths

• Algorithm uses MERRA-2 reanalysis as a first-guess, providing a physically constrained atmospheric state.
• Data is structured into 240 six-minute granules per day, offering regular global coverage.
• Includes per-field quality flagging for variables like humidity and gas mixing ratios.

Limitations

• Key metadata like row count, column names, and exact file size is unavailable across all sources.
• Product latency is 3 to 7 weeks due to dependency on MERRA-2 reanalysis inputs.
• Sources provide conflicting license information ('other-license-specified' vs. 'None').

Provenance

Source

GES_DISC (Goddard Earth Sciences Data and Information Services Center)

Collection Method

Derived from the CLIMCAPS V2.1 algorithm processing data from the CrIS/ATMS instruments on the JPSS-1 satellite.

Time Range

Approximately 16-day orbit repeat cycle suggests continuous daily data collection.

Freshness

2026 04 09 20:30:48.966592

Geography

Global coverage from polar-orbiting satellite observations.