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    • Global-Gridded Daily Methane Emissions Climatology from Lake Systems, 2003-2015

    Metadata Updated: December 6, 2023

    This dataset provides global gridded information on lake surface area and open water CH4 emissions at a resolution of 0.25-degree x 0.25-degree for an annual climatology representative of the average conditions from 2003 to 2015. A compilation of flux data from 575 individual lake systems and 893 aggregated flux values were used, and each flux measurement was classified into one of seven ecoclimatic types. Ice-cover-regulated emission seasonality was derived from satellite microwave observations of ice cover phenology and freeze-thaw dynamics. Global lake area was determined from the merger of HydroLAKES and Climate Change Initiative Inland-Water (CCI-IW) remote-sensing data, and lakes were classified into ecoclimatic regions to facilitate linking these types with ecosystem-specific CH4 measurements in the flux compilation. Exploratory estimates of fluxes associated with ice melt and with spring and fall water-column turnover are also included. The data are provided in NetCDF format.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date September 27, 2023
    Metadata Updated Date December 6, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    a) Lake area density (fraction of cell area) and b) ecoclimatic lake type classification. White space indicates cells with no lakes present.

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date September 27, 2023
    Metadata Updated Date December 6, 2023
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2764746271-ORNL_CLOUD
    Data First Published 2023-01-25
    Language en-US
    Data Last Modified 2023-09-11
    Category Climate, geospatial
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.nasa.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Citation Johnson, M.S., E. Matthews, D. Bastviken, J. Du, and V. Genovese. 2022. Global-Gridded Daily Methane Emissions Climatology from Lake Systems, 2003-2015. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/2008
    Graphic Preview Description a) Lake area density (fraction of cell area) and b) ecoclimatic lake type classification. White space indicates cells with no lakes present.
    Graphic Preview File https://daac.ornl.gov/CLIMATE/guides/Global_Lakes_Methane_Fig1.jpg
    Harvest Object Id dede9d1d-d340-464e-ad8f-1f31e533c734
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/2008
    Metadata Type geospatial
    Old Spatial -180.0 -90.0 180.0 90.0
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 8a8850b3e23f82fdb9baeb34f4dfb377d1146ddbb835c9fc2aa496ea9f17d0e4
    Source Schema Version 1.1
    Spatial
    Temporal 2012-01-01T00:00:00Z/2012-12-31T23:59:59Z

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