Gridded U.S. Anthropogenic Methane Greenhouse Gas Inventory (gridded GHGI)

**** THE FOLLOWING DATA HAVE NOT BEEN PEER-REVIEWED **** *** This repository will be updated upon peer-review and final publication of an associated manuscript. For questions and answers about previous versions of this dataset, please visit previously published Zenodo records: https://zenodo.org/records/8367082 *** About The gridded U.S. anthropogenic methane greenhouse gas inventory (gridded GHGI) includes spatially and temporally resolved (gridded) maps of annual anthropogenic methane emissions (0.1°×0.1°) for the contiguous United States (CONUS). Total gridded methane emissions for each source sector are consistent with national annual U.S. anthropogenic methane emissions reported in the Inventory of U.S. Greenhouse Gas Emissions and Sinks (U.S. GHGI). This repository is an update to the gridded GHGI version 2, previously described in Maasakkers, et al., 2023 and available at: https://zenodo.org/records/8367082 This work was led by RTI International, funded by contract number: 68HERH19D0030/68HERH24F0030. This repository contains the follow data: Gridded GHGI v3 (2 file types). Gridded annual U.S. anthropogenic methane emissions for 2012-2022 for 34 source categories. This dataset is developed to be consistent with the national U.S. GHGI published in April 2024 (U.S. EPA, Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990 - 2022. U.S. Environmental Protection Agency, 2024, EPA 430-R-24-004, https://www.epa.gov/system/files/documents/2024-04/us-ghg-inventory-2024-main-text_04-18-2024.pdf).This dataset includes 2 file types: a. Annual methane emission fluxes for 34 inventory source categories. Files contain one year of emissions per source category and include a time dimension variable to make the data suitable (COARDS-compliant) for atmospheric models.(Dimensions: longitude x latitude x time; units: molecules CH­4 cm-2 s-1): - Gridded_GHGI_Methane_v3_YYYY.ncb. Monthly emission scaling factors for inventory source categories with interannual variability (see 'Data Details' below). To use these factors to calculate absolute monthly methane emission fluxes, multiply the scaling factors for each relevant source category by the corresponding emission fluxes in the annual flux files. (Dimensions: longitude x latitude x month; units: dimensionless): - Gridded_GHGI_Methane_v3_Monthly_Scale_Factors_YYYY.nc