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    • PREFIRE Spectral Radiance from PREFIRE Satellite 1 R01

    Metadata Updated: September 18, 2025

    PREFIRE (Polar Radiant Energy in the Far InfraRed Experiment) Spectral Radiance from PREFIRE Satellite 1 (PREFIRE_SAT1_1B-RAD) contains calibrated and geolocated radiance data derived from data collected by the PREFIRE Thermal Infrared Spectrometer (TIRS-PREFIRE) aboard PREFIRE-SAT1. Duel CubeSats each carry a TIRS-PREFIRE, a push broom spectrometer with 63 channels measuring mid- and far-infrared (FIR) radiation from approximately 5 to 53 µm. Most polar emissions are in the FIR but have not been measured on a large scale. PREFIRE aims to fill knowledge gaps in the global energy budget by more accurately characterizing polar emissions. This information will then be assimilated into global circulation and other climate models to predict future climates more accurately.PREFIRE_SAT1_1B-RAD data is processed by geolocating the calibrated radiance data in PREFIRE_SAT1_1A-RAD using the pointing and position telemeters in PREFIRE_SAT1_0-BUS-TLM and a Digital Elevation Map.The PREFIRE_SAT1_1A-RAD data is used to analyze the radiative budget in polar regions and produce 2 products: top-of-atmosphere spectral flux, surface spectral emissivity, and atmospheric properties such as cloud cover, temperature profiles, and water vapor profiles.Data retrieval started in May TBD, 2024, and is ongoing. Geographic coverage is global, with the greatest concentration of data in the polar regions. The data swath is TBD km wide with 8 discrete TBD km wide data tracks corresponding to the 8 TIRS sensors. Individual data footprints are TBD km long by TBD km wide. This data has a temporal resolution of 0.707 seconds and is available in netCDF-4.Calibrated and geolocated radiance data for the sister instrument aboard PREFIRE-SAT2 can be found in the PREFIRE_SAT2_1B-RAD collection.

    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.

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    Dates

    Metadata Created Date June 2, 2025
    Metadata Updated Date September 18, 2025

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date June 2, 2025
    Metadata Updated Date September 18, 2025
    Publisher NASA/LARC/SD/ASDC
    Maintainer
    Identifier 10.5067/PREFIRE-SAT1/PREFIRE/RAD_L1B.R01
    Data Last Modified 2025-09-11
    Category Earth Science
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id bde26baf-b822-410f-8d06-77f680a59269
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://asdc.larc.nasa.gov/static/images/project_logos/prefire.png
    Old Spatial "GEODETIC",{"NorthBoundingCoordinate":84,"WestBoundingCoordinate":-180,"EastBoundingCoordinate":180,"SouthBoundingCoordinate":-84}
    Program Code 026:000
    Source Datajson Identifier True
    Source Hash db7f17154dc6c8a35547f849aac40bbf9d19192e05e14bf475f9a146c2933efd
    Source Schema Version 1.1
    Spatial
    Temporal 2024-07-24/2024-07-24

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