Arctic-Boreal CO2 Flux Estimates from Machine Learning Models

Gridded monthly estimates of gross primary productivity (GPP), ecosystem respiration (Reco), and net ecosystem CO2 exchange (NEE) for the circumpolar terrestrial Arctic-boreal region at 1-km resolution. The dataset, produced by NASA using a random forest modeling framework, covers the period from 2001 to 2020. It includes aggregated annual averages, fire-adjusted NEE, and temporal trend rasters.

Use Cases

• Analyzing spatial patterns of carbon uptake and release using GPP, Reco, and NEE raster layers.
• Assessing interannual variability and trends in net ecosystem exchange from 2002 to 2020.
• Incorporating direct fire emissions into carbon budget calculations using the GFED-adjusted NEE product.
• Validating process-based terrestrial biosphere models against machine-learning-derived flux estimates.
• Studying the relationship between CO2 fluxes and driving variables like meteorology and topography.

Strengths

• Provides a 20-year time series (2001-2020) for analyzing long-term trends.
• Integrates multiple data sources, including eddy covariance observations, remote sensing, and meteorological data.
• Offers high spatial detail with 1-km resolution gridded data across the entire Arctic-boreal region.
• Includes derived products like annual aggregates and fire-adjusted emissions for direct application.

Limitations

• Data is model-derived, not direct measurement, introducing uncertainty from the random forest framework.
• Conflicting last updated dates exist between sources (2026-03-13 on Data.gov vs. 2020-12-31 on NASA Earthdata).
• Specific row/column counts and dataset size are not provided across any platform.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Generated using a random forest model trained on terrestrial eddy covariance and chamber CO2 flux observations, combined with geospatial meteorological, remote sensing, topographical, and soil data.

Time Range

2001-2020

Freshness

2026-03-13 00:44:10.888560

Geography

Circumpolar terrestrial Arctic-boreal region