CMS_CH4_FLX_NAD: Daily Methane Flux Estimates for North America

CMS Methane (CH4) Flux for North America L4 Daily V1 provides estimates of methane emissions across North America. The data is produced by the NASA Carbon Monitoring System using an inversion of the GEOS-Chem model constrained by GOSAT satellite observations. Emission sources are separated into 12 distinct sectors, including Oil/Gas, Coal, Wetlands, and Biomass Burning.

Use Cases

• Modeling regional methane budgets based on the 12 distinct emission sectors.
• Tracking changes in anthropogenic emissions from sectors like Oil/Gas and Waste.
• Analyzing natural methane sources and sinks from Wetlands and Soil Absorption.
• Validating atmospheric transport models using satellite-constrained flux estimates.

Strengths

• Data is produced by the NASA Carbon Monitoring System, an authoritative source.
• Emissions are disaggregated into 12 distinct source sectors for detailed analysis.
• Uses a nested inversion approach designed to resolve large point sources and minimize aggregation errors.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and spatial resolution are unknown, which may limit suitability assessment.
• Data freshness should be verified despite the listed update date of 2026-03-13.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Inversion of the GEOS-Chem chemical transport model constrained by GOSAT satellite observations.

Freshness

Last updated 2026-03-13 00:23:05.830920

Geography

North America