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    • ATom: Data Stream for Modeling the Reactivity of ATom Air Parcels, 2016-2018

    Metadata Updated: December 7, 2023

    This dataset provides Modeling Data Stream (MDS) and Reactivity Data Stream (RDS) products for each of the four ATom campaigns conducted from 2016 to 2018. MDS files contain the atmospheric constituents needed to model the RDS of the air parcels along ATom flight paths. The MDS is a continuous data stream (every 10 seconds) of the atmospheric content of these key chemical species derived from the in-situ measurements collected along ATom flight paths (as reported in the comprehensive related dataset ATom: Merged Atmospheric Chemistry, Trace Gases, and Aerosols). Values for chemical species measured by multiple instruments were selected from the instrument with better coverage and/or greater precision. Missing values were filled using interpolation for short gaps. For long gaps owing to instrument failure, values were estimated using multiple linear regressions from comparable parallel flights from other ATom campaigns. All species were flagged for instrument source and values were flagged for gap-filling status. In combination, MDS and RDS provide, in essence, a photochemical climatology for each air parcel along ATom flight paths containing the reactive species that control the loss of methane and the production and loss of ozone.

    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 June 27, 2023
    Metadata Updated Date December 7, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Curtain plots for production of ozone from the ATom-1 campaign in the Central Pacific (top), Eastern Pacific (middle), and Atlantic (bottom). The 10 s air parcels are averaged into 10-degree latitude and 200 m altitude bins. Reactivities, such as P-O3, are calculated for each 10 s air parcel from the Modeling Data Stream (MDS), Version 2, using the UC Irvine chemistry-transport model (CTM) with HNO4 and PAN damped by thermal decomposition. Source: Guo et al. (2021)

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date June 27, 2023
    Metadata Updated Date December 7, 2023
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2704941577-ORNL_CLOUD
    Data First Published 2022-05-04
    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 Guo, H., C.M. Flynn, M.J. Prather, S.A. Strode, S.D. Steenrod, L. Emmons, F. Lacey, J.-F. Lamarque, A.M. Fiore, G. Correa, L.T. Murray, G.M. Wolfe, J.M. St.Clair, M.J. Kim, J.D. Crounse, G.S. Diskin, J.P. DiGangi, B.C. Daube, R. Commane, K. McKain, J. Peischl, T.B. Ryerson, C.R. Thompson, T.F. Hanisco, D.R. Blake, N. Blake, E.C. Apel, R.S. Hornbrook, J.W. Elkins, E.J. Hintsa, F.L. Moore, and S.C. Wofsy. 2022. ATom: Data Stream for Modeling the Reactivity of ATom Air Parcels, 2016-2018. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1877
    Graphic Preview Description Curtain plots for production of ozone from the ATom-1 campaign in the Central Pacific (top), Eastern Pacific (middle), and Atlantic (bottom). The 10 s air parcels are averaged into 10-degree latitude and 200 m altitude bins. Reactivities, such as P-O3, are calculated for each 10 s air parcel from the Modeling Data Stream (MDS), Version 2, using the UC Irvine chemistry-transport model (CTM) with HNO4 and PAN damped by thermal decomposition. Source: Guo et al. (2021)
    Graphic Preview File https://daac.ornl.gov/ATOM/guides/ATom_FullModel_DataStream_Fig1.jpg
    Harvest Object Id 5221eca5-da74-4c0c-bc4a-5a1d1c35d258
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/1877
    Metadata Type geospatial
    Old Spatial -180.0 -90.0 180.0 90.0
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 09923ff0ffc53edc91e0498f56b62a6480ac4bf7d395dc9bec6d44ca071885b6
    Source Schema Version 1.1
    Spatial
    Temporal 2016-07-29T00:00:00Z/2018-05-21T23:59:59Z

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