SNDRJ1IML3SDCCP: Daily Global Atmospheric Profiles from NOAA-20 Satellite

CLIMCAPS V2 algorithm processes data from the NOAA-20 satellite's CrIS/ATMS instruments to produce daily, global atmospheric state profiles. The dataset includes full-atmosphere profiles of temperature, water vapor, ozone, and trace gases like carbon monoxide and methane, gridded at one-degree resolution. It is a Level-3 product derived using an Optimal Estimation methodology, characterizing surface properties, cloud top characteristics, and atmospheric composition.

Use Cases

• Monitoring global carbon monoxide transport and pollution events based on retrieved column density profiles.
• Assimilating full-atmosphere temperature and water vapor profiles into numerical weather prediction models.
• Studying cloud radiative effects and cloud top characteristics from infrared effective cloud data.
• Analyzing long-term trends in atmospheric methane and other greenhouse gases from the global daily record.
• Validating climate model outputs of surface skin temperature and land surface emissivity.

Strengths

• Provides a multi-parameter atmospheric state from a single source, including over 10 distinct geophysical parameters.
• Derived from high-resolution satellite instruments: CrIS has 2211 infrared channels and ATMS has 22 microwave channels.
• Features a documented, correctable error for the 'co_mmr_midtrop' variable, with explicit instructions provided.
• Cross-platform presence on NASA Earthdata and Data.gov signals its importance and curated status.

Limitations

• Contains a significant, documented bias in the 'co_mmr_midtrop' variable requiring user correction.
• Key metadata such as row count, specific column names, and exact file size are unavailable across all sources.
• The spatial resolution of one degree may be too coarse for localized or regional-scale studies.

Provenance

Source

GES_DISC, using data from the NOAA-20 (JPSS-1) satellite's CrIS/ATMS instruments.

Collection Method

Processed via the CLIMCAPS (Community Long-term Infrared Microwave Coupled Product System) algorithm using Optimal Estimation.

Freshness

2026-04-09 22:07:12.764528

Geography

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