ACT-America: Gridded Surface Biogenic Carbon Fluxes, 2003-2019

ACT-America provides gridded, model-derived gross primary productivity (GPP), ecosystem respiration (RECO), and net ecosystem exchange (NEE) of CO2 biogenic fluxes and their uncertainties. The data is available at monthly and 3-hourly scales from 2003 to 2019, with spatial resolutions of 463 meters for the CONUS and 5-km/half-degree for North America. The National Aeronautics and Space Administration generated this dataset using the Carnegie Ames Stanford Approach (CASA) biogeochemical model.

Use Cases

• Modeling terrestrial carbon budgets based on gridded GPP, RECO, and NEE fluxes.
• Analyzing spatiotemporal patterns of biogenic CO2 exchange based on monthly and 3-hourly time scales.
• Validating remote sensing products or other ecosystem models based on the high-resolution (463-m) CONUS grid.
• Studying continental-scale carbon dynamics based on the 5-km and half-degree North America grids.

Strengths

• Covers a 17-year time range from 2003 to 2019.
• Provides data at multiple spatial resolutions, including a high-resolution 463-meter grid for the conterminous United States.
• Includes uncertainty estimates for the modeled carbon fluxes.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Model-derived using the Carnegie Ames Stanford Approach (CASA) biogeochemical model.

Time Range

2003-2019

Freshness

Last updated 2026-03-12 19:43:27.312357; freshness should be verified.

Geography

Conterminous United States and North America