Global Gridded Methane Flux Estimates From 2019 To 2024

Global gridded surface methane (CH4) fluxes from 2019 to 2024 are provided in this dataset. Estimates were generated by Yilong Wang using the GONGGA-CH4 inversion system, which assimilates blended TROPOMI and GOSAT satellite observations. The dataset was last updated in April 2026.

Use Cases

• Analyze temporal trends in gridded CH4 flux to identify regional emission hotspots over the 2019-2024 period.
• Validate bottom-up emission inventories by comparing them against the satellite-constrained flux estimates.
• Assess the impact of prescribed hydroxyl radical (OH) fields from the CAMS EAC4 reanalysis on inverted methane fluxes.
• Study the spatial distribution of surface methane sources at a global scale using the gridded flux data.

Strengths

• Covers a 6-year time range from 2019 to 2024.
• Integrates data from two satellite instruments, TROPOMI and GOSAT.
• Utilizes observation-constrained OH fields from the authoritative CAMS EAC4 reanalysis.

Limitations

• The dataset is relatively small at 26.3 MB, which may limit spatial or temporal resolution.
• Uncertainty estimates or validation against independent ground-based measurements are not described.

Provenance

Source

GONGGA-CH4 inversion system using TROPOMI and GOSAT satellite data and CAMS EAC4 reanalysis.

Collection Method

Atmospheric inversion estimating surface fluxes through data assimilation of satellite observations.

Time Range

2019 to 2024

Freshness

Data current through 2024, with metadata updated in April 2026.

Geography

Global