data api · United States

GEOS Atmosphere Composition Analysis

GEOS-CF High temporal resolution analysis, in Icechunk. 15-minutely, 0.25 degree resolution products. This is the analysis product, available from 2018-Present, with a 1 day delay. More information is available: https://gmao.gsfc.nasa.gov/weather_prediction/GEOS-CF/.

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What's in it

Data offered docs-verified: GEOS-CF atmospheric composition analysis
Coverage docs-verified: United States · 2018-Present
Resolution docs-verified: 15-minutely temporal; 0.25 degree spatial
Formats docs-verified: Icechunk · Zarr
Access docs-verified: Public (no login indicated); anonymous HTTPS/S3 access via data.source.coop; licence: see product README (not stated in docs)

Useful for

Use cases llm-inferred: Historical 15-minute atmospheric composition context for air quality assessments from 2018 onward · Retrospective pollutant or aerosol timeseries for event analysis such as smoke or dust episodes · Gridded atmospheric composition inputs for GIS-based environmental screening
Audience llm-inferred: air quality consultants · environmental scientists · atmospheric modellers · GIS analysts

Limitations

Constraints llm-inferred: Analysis product only, not a forecast · Data available with a 1 day delay · Licence not stated in docs; see product README · Requires Icechunk or Zarr-capable tooling to read · Regional metadata tag is United States; spatial extent not stated in docs

Licence: see product README
Authentication: Public; anonymous HTTPS/S3 access via data.source.coop
GitHub stars: Unknown
Last commit: Unknown
Last successful page check: 14/10/2026
Page health: page reachable
Package: Not recorded
Verification: Not independently verified

Provenance & evidence

Verified via Source Cooperative API /api/v1/products/bkr (public product, updated 2025-08-21).

Metadata observed 14/10/2026 · research sweep: manual-2026-10-15 (source.coop)