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    • ATom: L2 Measurements from NOAA ToF Chemical Ionization Mass Spectrometer, Version 2

    Metadata Updated: December 6, 2023

    This dataset provides the mixing ratios of reactive nitrogen and halogen species measured by the NOAA Iodide Ion Time-of-Flight Chemical Ionization Mass Spectrometer (NOAA CIMS) during airborne campaigns conducted by NASA's Atmospheric Tomography (ATom) mission for ATom-3 and ATom-4 campaigns. The NOAA CIMS uses chemical ionization mass spectrometric detection of gas phase organic and inorganic analytes via I- adduct formation. Measurements for ATom include N2O5 (dinitrogen pentoxide), ClNO2 (chloro nitrite), Cl2 (Chlorine), HCOOH (formic acid), C2H4O3S (hydroperoxymethyl thioformate), BrCl (bromine monochloride), BrCN (cyanogen bromide), and BrO (bromine monoxide). ATom deploys an extensive gas and aerosol payload on the NASA DC-8 aircraft for systematic, global-scale sampling of the atmosphere, profiling continuously from 0.2-13 km altitude. This comprehensive dataset will be used to improve the representation of chemically reactive gases and short-lived climate forcers in global models of atmospheric chemistry and climate.

    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 6, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Bromine chloride measurements from the NOAA CIMS instrument during the ATom-3 campaign.

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date May 30, 2023
    Metadata Updated Date December 6, 2023
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2677134970-ORNL_CLOUD
    Data First Published 2021-08-13
    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 Veres, P.R., J.A. Neuman, and T.B. Ryerson. 2021. ATom: L2 Measurements from NOAA ToF Chemical Ionization Mass Spectrometer, Version 2. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1921
    Graphic Preview Description Bromine chloride measurements from the NOAA CIMS instrument during the ATom-3 campaign.
    Graphic Preview File https://daac.ornl.gov/ATOM/guides/NOAA_ToF_CIMS_Instrument_Data_Fig1.png
    Harvest Object Id 3d633166-0e59-43ae-be3e-5eed25f38a69
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/1921
    Metadata Type geospatial
    Old Spatial -180.0 -86.18 180.0 82.94
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash a376db72d202d1a4da3039ad7d9e226a8fa9839b45015931aa498d5fe61a9a38
    Source Schema Version 1.1
    Spatial
    Temporal 2017-09-28T14:36:16Z/2018-05-21T23:37:58Z

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