CMS_CH4_FLX_NA: Methane Emission Estimates for North America

CMS Methane (CH4) Flux for North America V1 is a NASA Carbon Monitoring System product that provides methane emission estimates for North America. The data is derived from an inversion of the GEOS-Chem chemical transport model constrained by GOSAT satellite observations. The product has been deleted due to an error and replaced by a daily version.

Use Cases

• Quantifying total methane emissions based on the 'Total' sector breakdown.
• Analyzing emissions from specific anthropogenic sources based on the 'Livestock', 'Oil/Gas', 'Waste', and 'Coal' sector categories.
• Studying natural methane sources based on the 'Wetlands' sector category.
• Comparing emission contributions from different sectors based on the nine distinct sector separations.
• Supporting regional policy development based on the nested inversion approach designed to resolve large point sources.

Strengths

• Data is produced by the NASA Carbon Monitoring System, an authoritative source.
• Emissions are separated into nine distinct sectors, including Wetlands, Livestock, Oil/Gas, Waste, Coal, Rice, Open Fires, and Other.
• The inversion uses a nested approach designed to resolve large point sources while minimizing aggregation errors.

Limitations

• This specific version (V1) has been deleted due to an error; users must use the replacement daily product.
• 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

Inversion of the GEOS-Chem chemical transport model constrained by Greenhouse Gases Observing SATellite (GOSAT) observations.

Freshness

Last updated 2026-03-13 03:27:47.096686; freshness should be verified.

Geography

North America