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    • Airborne Observations and Modeling Comparison of Global Inorganic Aerosol Acidity

    Metadata Updated: December 6, 2023

    This dataset provides observations collected during eleven airborne campaigns from 2006–2017 and associated input and output from nine widely used chemical transport models (CTMs). The airborne campaigns include ARCTAS-A, ARCTAS-B, ATom-1 and ATom-2, CalNex, DC3, INTEX-B, KORUS-AQ, MILAGRO, SEAC4RS, and WINTER, and they sampled mainly tropospheric air over the conterminous U.S. and the state of Alaska, Mexico, Canada, Greenland, and South Korea and remote areas over the Arctic, Pacific, Southern, and Atlantic Oceans. The CTMs are the AM4.1, CCSM4, GEOS-5, GEOS-Chem TOMAS, GEOS-Chem v10, GEOS-Chem v12, GISS-MATRIX, GISS-ModelE, and TM4-ECPL-F, and the output includes sulfate, nitrate, temperature, specific humidity, mixing ratio of ammonium, the volume mixing ratio of nitric acid, surface pressure, gas-phase ammonia, gas-phase nitric acid, pressure, total ammonium, etc. The observations were collected in-situ from a variety of instruments, including the Aerosol Microphysical Properties (AMP), HR Aerodyne Aerosol Mass Spectrometer (AMS), CIT Chemical Ionization Mass Spectrometer (CIMS), diode laser hygrometer (DLH), a mist chamber/ion chromatography system (MC/IC), Particle Analysis by Laser Mass Spectrometer (PALMS), Single Particle Soot Photometer (SP2), and UCI Whole Air Sampler (WAS). In-situ data also include latitude, longitude, and pressure. These observations were used to investigate how aerosol pH and ammonium balance change from polluted to remote regions, such as over oceans, and were compared to predictions from the CTMs.

    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 6, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Flight tracks for airborne campaigns in this dataset.

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date June 27, 2023
    Metadata Updated Date December 6, 2023
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2698474800-ORNL_CLOUD
    Data First Published 2022-03-17
    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 Nault, B.A., P. Campuzano-Jost, D.A. Day, D.S. Jo, J.C. Schroder, H.M. Allen, R. Bahreini, H. Bian, D.R. Blake, M. Chin, S.L. Clegg, P.R. Colarco, J.D. Crounse, M.J. Cubison, P.F. Decarlo, J.E. Dibb, G.S. Diskin, A. Hodzic, W. Hu, J.M. Katich, J.K. Kodros, A. Kupc, F.D. Lopez-Hilfiker, E.A. Marais, A.M. Middlebrook, J.A. Neuman, J.B. Nowak, B.B. Palm, F. Paulot, J.R. Pierce, G.P. Schill, E. Scheuer, J.A. Thornton, K. Tsigaridis, P.O. Wennberg, C.J. Williamson, and J.L. Jimenez. 2022. Airborne Observations and Modeling Comparison of Global Inorganic Aerosol Acidity. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1857
    Graphic Preview Description Flight tracks for airborne campaigns in this dataset.
    Graphic Preview File https://daac.ornl.gov/ATOM/guides/ATom_Modeled_Observed_Data_Fig1.png
    Harvest Object Id 6f701ba9-83cb-4e10-99af-3e4b32b289f0
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/1857
    Metadata Type geospatial
    Old Spatial -180.0 -90.0 180.0 90.0
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 59e21d77af8442a1d3905eebc3e78e553b15c1b9d2f41d9fd723083f2d66d41c
    Source Schema Version 1.1
    Spatial
    Temporal 2006-01-01T00:00:00Z/2017-08-01T23:59:59Z

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