Global Wetland Methane Emissions at 0.5-Degree Resolution

WetCHARTs v1.0 provides global monthly wetland methane emissions and uncertainty data at a 0.5 by 0.5-degree spatial resolution. The dataset is derived from an ensemble of terrestrial biosphere models, wetland extent scenarios, and temperature dependencies. It is produced by NASA and serves as a process-informed data product for atmospheric chemistry and transport modeling.

Use Cases

• Validating atmospheric methane transport models using the gridded monthly emission estimates.
• Analyzing spatial and temporal patterns of wetland methane sources from 2001-2015 model outputs.
• Assessing uncertainty in global methane budgets using the ensemble-derived uncertainty data products.
• Incorporating process-informed wetland CH4 fluxes into Earth system model simulations.

Strengths

• Data is derived from an ensemble of multiple terrestrial biosphere models and scenarios, providing a multi-model perspective.
• Offers a 15-year temporal record (2001-2015) from a limited model subset for longitudinal analysis.
• Provides high-resolution global coverage at a consistent 0.5 by 0.5-degree grid.

Limitations

• Conflicting last updated dates exist between sources: Data.gov lists 2026-03 13, while NASA Earthdata lists 2015-12-31.
• Specific column names and the exact row count or file size are not provided in any source description.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Derived from an ensemble of multiple terrestrial biosphere models, wetland extent scenarios, and CH4:C temperature dependencies.

Time Range

2001-2015

Freshness

2026-03-13 03:14:43.759650

Geography

Global