LPJ-EOSIM: Global Simulated Daily Wetland Methane Flux at 0.5-Degree Resolution

LPJ_EOSIM_L2_DCH4E_LL Version 1 provides simulated daily wetland methane (CH4) flux globally at a spatial resolution of 0.5 degrees. The data is generated by the Lund-Potsdam-Jena Earth Observation SIMulator (LPJ-EOSIM) model for the United States Greenhouse Gas Center (GHGC). Low latency data are delivered on a two-month cadence and updated as new carbon dioxide input data become available.

Use Cases

• Modeling global wetland methane emissions based on simulated wetland extent and characteristics.
• Studying climate-carbon feedback dynamics based on daily flux simulations.
• Informing strategic placement of GHG measurement campaigns based on predicted biogeochemical hotspots.
• Comparing methane flux estimates based on different meteorological forcing datasets (MERRA-2 and ERA5).

Strengths

• Provides global coverage at a 0.5-degree spatial resolution.
• Offers daily temporal resolution for flux estimates.
• Includes data products based on two major meteorological reanalysis datasets (MERRA-2 and ERA5).
• Data is delivered in Cloud Optimized GeoTIFF (COG) format for efficient access.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The description excludes small ponds, lakes, and coastal wetlands from its wetland definition, which may limit applicability for some hydrological studies.

Provenance

Source

NASA LPJ Project, likely via the United States Greenhouse Gas Center (GHGC).

Collection Method

Simulated by the Lund-Potsdam-Jena Earth Observation SIMulator (LPJ-EOSIM) model using wetland extent, soil moisture, temperature, and carbon content.

Time Range

Daily data; specific date range is unknown from the input.

Freshness

Low latency data are delivered on a two-month cadence and updated as new input data become available.

Geography

Global