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    • ATom: Actinic Flux and Photolysis Frequencies from CAFS Instrument, 2016-2018, V2

    Metadata Updated: December 7, 2023

    This dataset contains actinic flux and photolysis frequencies for photodissociation reactions for a variety of chemical species during the four ATom campaigns. Spectrally resolved actinic flux was measured by the down- and up-welling Charged-coupled device Actinic Flux Spectroradiometers (CAFS) from approximately 280-650 nm. Photolysis frequencies were calculated from the actinic flux and published cross sections and quantum yield values for atmospherically relevant molecules. Solar radiation drives the chemistry of the atmosphere, including the evolution of ozone, greenhouse gases, biomass burning, and other anthropogenic and natural trace constituents.

    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 May 30, 2023
    Metadata Updated Date December 7, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Charged-coupled device Actinic Flux Spectroradiometer (CAFS) derived total NO2 photolysis frequencies (jNO2) during ATom 1. The flight track (black line) is visible during nighttime operations when jNO2 is below detection limits.

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date May 30, 2023
    Metadata Updated Date December 7, 2023
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2677105431-ORNL_CLOUD
    Data First Published 2021-11-19
    Language en-US
    Data Last Modified 2023-06-12
    Category ATom, 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 Hall, S.R., and K. Ullmann. 2021. ATom: Actinic Flux and Photolysis Frequencies from CAFS Instrument, 2016-2018, V2. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1933
    Graphic Preview Description Charged-coupled device Actinic Flux Spectroradiometer (CAFS) derived total NO2 photolysis frequencies (jNO2) during ATom 1. The flight track (black line) is visible during nighttime operations when jNO2 is below detection limits.
    Graphic Preview File https://daac.ornl.gov/ATOM/guides/ATom_CAFS_Instrument_Data_V2_Fig1.png
    Harvest Object Id 99b089d3-f766-4b2e-a5a0-7016ff78c5f6
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/1933
    Metadata Type geospatial
    Old Spatial -180.0 -90.0 180.0 90.0
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 188ffe655586456d6bfbf2bde40f4dad0ef0de07097761adfeaebfd2cd49a067
    Source Schema Version 1.1
    Spatial
    Temporal 2016-07-29T00:00:00Z/2018-05-21T23:59:59Z

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