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

    Metadata Updated: December 6, 2023

    The MODIS Level 1B Near Real Time (NRT) data set contains calibrated and geolocated at-aperture radiances for 36 discrete bands located in the 0.4 to 14.4 micron region of

    electromagentic spectrum. These data are generated from the MODIS Level 1A scans of raw radiance and in the process 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 would be 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:

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

    or visit Science Team homepage at: http://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 December 6, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date November 12, 2020
    Metadata Updated Date December 6, 2023
    Publisher NASA/GSFC/EOS/ESDIS/LANCEMODIS
    Maintainer
    Identifier C1426414410-LANCEMODIS
    Data First Published 2017-10-11
    Language en-US
    Data Last Modified 2023-07-20
    Category DODS, EOSDIS, ESIP, OPENDAP, 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 LANCEMODIS. 2017-09-10. MODIS/Terra Calibrated Radiances 5-Min L1B Swath 1km - NRT. Version 6.1NRT. MODAPS at NASA/GSFC. Archived by National Aeronautics and Space Administration, U.S. Government, The Land, Atmosphere Near real-time Capability for EOS (LANCE). https://doi.org/10.5067/MODIS/MOD021KM.NRT.061. https://earthdata.nasa.gov/staging/earth-observation-data/near-real-time/download-nrt-data/modis-nrt.
    Creator LANCEMODIS
    Harvest Object Id 0163a771-4c31-4138-a6f7-1f7861eb4b52
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/MODIS/MOD021KM.NRT.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 b6c56348a0fb4d727b55fcb888a2b9d8f1252511f647d95258c0a125379f0903
    Source Schema Version 1.1
    Spatial
    Temporal 2017-10-11T00:00:00Z/2023-07-24T00:00:00Z

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