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Description

The Lund-Potsdam-Jena Earth Observation SIMulator (LPJ-EOSIM) model estimates global wetland methane (CH4) emissions using simulated wetland extent and characteristics including soil moisture, temperature, and carbon content. For this dataset, wetlands are defined as land areas that are either permanently or seasonally saturated, excluding small ponds, lakes, and coastal wetlands. These wetland CH4 flux data will be used to support the United States Greenhouse Gas Center (GHGC) and its mission to study natural GHG fluxes. The model will also be used to facilitate improved rapid detection and attribution of climate-carbon feedback, and in strategic placement of measurement campaigns and monitoring systems as they relate to predicted biogeochemical hotspots.

The LPJ-EOSIM L2 Global Simulated Monthly Wetland Methane Flux Low Latency (LPJ_EOSIM_L2_MCH4E_LL) Version 1 data product provides simulated monthly wetland CH4 flux globally at a spatial resolution of 0.5 degrees. The monthly simulation data contains aggregate versions of the daily LPJ-EOSIM L2 Global Simulated Daily Wetland Methane Flux Low Latency (LPJ_EOSIM_L2_DCH4E_LL) Version 1 data. The monthly data are presented in four Cloud Optimized GeoTIFF (COG) files: two based on the aggregated daily forcing datasets Modern-Era Retrospective analysis for Research and Applications Version 2 (MERRA-2) and European Centre for Medium-Range Weather Forecasts (ECMWF) Re-Analysis (ERA5), and two containing the mean and standard deviation values calculated from the monthly aggregate data.

Due to the latency of global carbon dioxide (CO<sub>2</sub>) concentration estimates required for computation of LPJ-EOSIM simulated monthly CH4 flux data products, low latency (LPJ_EOSIM_L2_MCH4E_LL) and high latency (LPJ_EOSIM_L2_MCH4E) collections are available. Low latency data are delivered on a two-month cadence throughout the year. Granules will also be updated as new CO2 input data become available. Please refer to Section 2.0.1 of the User Guide for a more detailed explanation of estimated CO2 inputs and timing for scheduled updates to the collections.

Product Summary

Platforms
LPJ-EOSIM
Spatial Extent
N: 90 S: -90 E: 180 W: -180
Spatial Resolution
0.5 Decimal Degrees x 0.5 Decimal Degrees
Geographic Region
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
1990-01-01 to Present
Temporal Resolution
1 Month
Data Partner
Land Processes Distributed Active Archive Center (LP DAAC)
Biospheric Sciences Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/BSL)
Concept ID
c3050406138-lpcloud
Data State
ACTIVE
Processing Level
2
Published
Updated

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Colligan, T., Poulter, B., & Quinn, C. (2024). LPJ-EOSIM L2 Global Simulated Monthly Wetland Methane Flux Low Latency V001 [Data set]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/COMMUNITY/LPJ-EOSIM/LPJ_EOSIM_L2_MCH4E_LL.001 Date Accessed: 2025-07-15

Data Center Citation

Thomas Colligan, Benjamin Poulter, Colin Quinn . 2024. LPJ-EOSIM L2 Global Simulated Monthly Wetland Methane Flux Low Latency V001. Sioux Falls, South Dakota, USA: NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/Community/LPJ-EOSIM/LPJ_EOSIM_L2_MCH4E_LL.001.

Documents

ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD) The Algorithm Theoretical Basis Document (ATBD) describes the physical and mathematical algorithms for the product.
USER'S GUIDE The technical information in the User's Guide enables users to interpret and use the data products.

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