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    • Global High-Resolution Estimates of SIF from Fused SCIAMACHY and GOME-2, V2

    Metadata Updated: February 7, 2024

    This dataset provides global solar-induced chlorophyll fluorescence (SIF) estimates at a 0.05-degree resolution (approximately 5 km at the equator) for each month from January 2003 through December 2017. SIF data (740 nm) was retrieved from the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) and Global Ozone Monitoring Experiment 2 (GOME-2) instruments onboard the MetOp-A satellite. The data were downscaled to 0.05 degrees using the Random Forest algorithm and predictors from Moderate Resolution Imaging Spectroradiometer (MODIS) and Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2) reanalysis, and then harmonized with the cumulative distribution function (CDF) matching technique. The uncertainty of the harmonized SIF estimates was also quantified and provided. Validation of the harmonized product showed that it retained high spatial and temporal consistency with the original SCIAMACHY and GOME-2 SIF retrievals and had good correlations with independent airborne and ground-based SIF measurements. The dataset can inform on the synergy between satellite SIF and photosynthesis and research on drought, yield estimation, and land degradation evaluation. 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 February 7, 2024
    Metadata Updated Date February 7, 2024

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Daily-corrected SIF at 740 nm for August 2015. The highest SIF values during this time period were observed in agricultural sectors in the Northern Hemisphere.

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date February 7, 2024
    Metadata Updated Date February 7, 2024
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2847119443-ORNL_CLOUD
    Data First Published 2024-01-25
    Language en-US
    Data Last Modified 2024-01-29
    Category SIF-ESDR, 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 Wen, J., J. Joiner, N.C. Parazoo, and Y. Sun. 2023. Global High-Resolution Estimates of SIF from Fused SCIAMACHY and GOME-2, V2. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/2317
    Graphic Preview Description Daily-corrected SIF at 740 nm for August 2015. The highest SIF values during this time period were observed in agricultural sectors in the Northern Hemisphere.
    Graphic Preview File https://daac.ornl.gov/SIF-ESDR/guides/SIF_SCIAMACHY_GOME2_Harmonized_Fig1.png
    Harvest Object Id a10aaccf-e273-4218-8643-89f312388f52
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/2317
    Metadata Type geospatial
    Old Spatial -180.0 -90.0 180.0 90.0
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash eb1e44266a4a8268b1eec22138bfa3d70c7c631bf6eecae7fa0d9e78e907c24d
    Source Schema Version 1.1
    Spatial
    Temporal 2003-01-01T00:00:00Z/2017-12-31T23:59:59Z

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