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    • MODIS/Terra Calibrated Radiances 5-Min L1B Swath 1km

    Metadata Updated: February 21, 2024

    The MODIS/Terra Calibrated Radiances 5Min L1B Swath 1km data set contains calibrated and geolocated at-aperture radiances for 36 discrete bands located in the 0.4 to 14.4 micron region of the electromagnetic spectrum. These data are generated from the MODIS Level 1A scans of raw radiance which during processing are converted to geophysical units of W/(m^2 um sr). Additional data are provided including quality flags, error estimates and calibration data.

    Visible, shortwave infrared, and near infrared measurements are only made during the daytime (except band 26), while radiances for the thermal infrared region (bands 20-25, 27-36) are measured continuously.

    The shortname for this product is MOD021KM and is stored in the Earth Observing System Hierarchical Data Format (HDF-EOS). A typical file size is approximately 110 MB (a day granule around 150MB and a night granule around 70 MB).

    In this new version (Collection 6.1) of MOD021KM, an advanced technique is introduced to mitigate the crosstalk contamination issue among the LWIR PV bands
    using data from lunar calibration events.

    The electronic crosstalk contamination issue in the Terra long-wave infrared photovoltaic (LWIR PV) bands (27 -30), has existed since the beginning of the mission but become more noticeable during later half of the mission. The electronic crosstalk is where signal from each of the detectors among the LWIR PV bands can leak to the other detectors, producing a false signal contribution. This contamination has had a noticeable effect on the MODIS science products since 2010 for band 27, and since 2012 for bands 28 and 29.

    Environmental information derived from MODIS L1B measurements will offer a comprehensive and unprecedented look at terrestrial, atmospheric, and ocean phenomenology for a wide and diverse community of users throughout the world.

    See the MODIS Characterization Support Team webpage for more C6 product information at:

    https://mcst.gsfc.nasa.gov/l1b/product-information

    or visit the Science Team homepage at: https://modis.gsfc.nasa.gov/data/dataprod/

    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 November 12, 2020
    Metadata Updated Date February 21, 2024

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date November 12, 2020
    Metadata Updated Date February 21, 2024
    Publisher Not provided
    Maintainer
    Identifier C1378227407-LAADS
    Data First Published 2017-05-01
    Language en-US
    Data Last Modified 2024-02-13
    Category Terra, 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 MCST Team. 2017-05-01. MODIS/Terra Calibrated Radiances 5-Min L1B Swath 1km. Version 6.1. MODAPS at NASA/GSFC. Archived by National Aeronautics and Space Administration, U.S. Government, L1 and Atmosphere Archive and Distribution System (LAADS). https://doi.org/10.5067/MODIS/MOD021KM.061. https://modaps.modaps.eosdis.nasa.gov/services/about/products/c61/MOD021KM.html.
    Creator MCST Team
    Harvest Object Id 98926ae7-7496-4e15-ba34-07e24e94d4ec
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/MODIS/MOD021KM.061
    Metadata Type geospatial
    Old Spatial -180.0 -90.0 180.0 90.0
    Program Code 026:001
    Release Place MODAPS at NASA/GSFC
    Source Datajson Identifier True
    Source Hash df48cecb1bb87776e50685af310aab0396e95438c5470073de04dbed3cabd492
    Source Schema Version 1.1
    Spatial
    Temporal 2000-02-24T00:00:00Z/2024-02-19T00:00:00Z

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