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    • ATom: L2 Halocarbons and Hydrocarbons from the UC-Irvine Whole Air Sampler (WAS)

    Metadata Updated: December 7, 2023

    This dataset provides atmospheric concentrations of halocarbons and hydrocarbons measured by the UC-Irvine Whole Air Sampler (WAS) during airborne campaigns conducted by NASA's Atmospheric Tomography (ATom) mission. The analysis of samples from the UCI WAS provides measurements of more than 50 trace gases, including C2-C10 NMHCs, C1-C2 halocarbons, C1-C5 alkyl nitrates, and selected sulfur compounds. Species were identified and measured using an established technique of airborne whole air sampling followed by laboratory analysis using gas chromatography (GC) with flame ionization detection (FID), and mass spectrometric detection (MSD). The ATom mission deployed an extensive gas and aerosol payload on the NASA DC-8 aircraft for systematic, global-scale sampling of the atmosphere, profiling continuously from 0.2 to 12 km altitude. Flights occurred in each of 4 seasons from 2016 to 2018.

    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

    Mixing ratio of CFC-11 measured in WAS samples taken during Atom-4 flights in April-May 2018.

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date May 30, 2023
    Metadata Updated Date December 7, 2023
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2676970206-ORNL_CLOUD
    Data First Published 2020-01-09
    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 Barletta, B., B.C. Biggs, D.R. Blake, N. Blake, A. Hoffman, S. Hughes, S. Meinardi, N. Vieznor, and C.T. Woods. 2019. ATom: L2 Halocarbons and Hydrocarbons from the UC-Irvine Whole Air Sampler (WAS). ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1751
    Graphic Preview Description Mixing ratio of CFC-11 measured in WAS samples taken during Atom-4 flights in April-May 2018.
    Graphic Preview File https://daac.ornl.gov/ATOM/guides/ATom_WAS_Instrument_Data_Fig1.png
    Harvest Object Id 74253769-941a-467f-b21a-fe598cc49612
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/1751
    Metadata Type geospatial
    Old Spatial -180.0 -90.0 180.0 90.0
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash f464f775883e74319b7381310716a48cc56779a7a732060c786a351751d2495a
    Source Schema Version 1.1
    Spatial
    Temporal 2016-07-29T14:33:18Z/2018-05-21T23:37:58Z

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