CMS-Flux-NA: Gridded CO2 Fluxes and Aircraft Co-samples for North America

April 8 to November 18 during 2018 and 2019, this dataset provides gridded surface-atmosphere CO2 fluxes over North America at a 3-hour temporal resolution. Net ecosystem exchange (NEE) was estimated by the CMS-Flux-NA CO2 inversion system, assimilating in situ CO2 measurements and/or OCO-2 column-averaged CO2 retrievals. It also includes modeled co-samples of CO2 observed for aircraft flights for model evaluation.

Use Cases

• Evaluating regional carbon cycle models using the provided aircraft CO2 co-samples.
• Analyzing diurnal variations in net ecosystem exchange (NEE) based on the 3-hour temporal resolution.
• Assessing the impact of fossil fuel and biomass burning emissions on atmospheric CO2 concentrations.
• Benchmarking other CO2 inversion systems against the CMS-Flux-NA estimates.

Strengths

• Provides data at a high 3-hour temporal resolution for detailed diurnal analysis.
• Covers two distinct growing seasons (2018 and 2019) for comparative study.
• Includes multiple flux components: NEE, fossil fuel emissions, biomass burning, and biofuel emissions.
• Cross-platform presence on datagov and nasa_earthdata signals its importance as a benchmark dataset.

Limitations

• Temporal coverage is limited to approximately seven months per year (April to November), excluding winter data.
• Conflicting metadata: the 'last updated' date differs significantly between sources (2019-12-31 vs. 2026-04-10).
• Column names and exact data dimensions (rows, size) are not provided, limiting immediate understanding of the data structure.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Estimated by the CMS-Flux-NA CO2 inversion system assimilating in situ CO2 measurements and/or OCO-2 retrievals.

Time Range

2018-04-08 to 2019-11-18

Freshness

2026-04-10 04:10:00.339358

Geography

North America