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    • NARSTO EPA Supersite (SS) Baltimore, Johns Hopkins University (JHU) LIDAR Backscatter and Mixing Height Data

    Metadata Updated: December 6, 2023

    The NARSTO_EPA_SS_BALTIMORE_JHU_MET_DATA is the North American Research Strategy for Tropospheric Ozone (NARSTO) Environmental Protection Agency (EPA) Supersite (SS) Baltimore, Johns Hopkins University (JHU) LIDAR Backscatter and Mixing Height Data product. This product contains measurements that were taken from May 2001 to September 2002 during the Baltimore Experiment of the EPA Particulate Matter (PM) Supersites Program by the JHU, Department of Geography and Environmental Engineering. A miniature elastic backscatter LIDAR was operated at several Baltimore locations in the vertical mode with typical resolution range of 3 m, typical time steps of 5 seconds, and ranges of 4.5-8 km. All vertical profile measurements of aerosol backscatter were taken during daytime with continuous sampling and can be used to describe composition, dynamics, and extent of the mixing layer and the air aloft. Mixing heights were determined from profile data under cloud-free conditions. Included in this data set are the large ASCII files of the aerosol backscatter data, the calculated mixing height data, and a companion HTML application with color images of the LIDAR profiles of the backscatter signals from aerosols. The EPA PM Supersites Program was an ambient air monitoring research program from 1999-2004 designed to provide information of value to the atmospheric sciences, and human health and exposure research communities.

    The EPA PM Supersites Program was an ambient air monitoring research program designed to provide information of value to the atmospheric sciences, and human health and exposure research communities. Eight geographically diverse projects were chosen to specifically address the following EPA research priorities: (1) to characterize PM, its constituents, precursors, co-pollutants, atmospheric transport, and its source categories that affect the PM in any region; (2) to address the research questions and scientific uncertainties about PM source-receptor and exposure-health effects relationships; and (3) to compare and evaluate different methods of characterizing PM including testing new and emerging measurement methods.

    NARSTO, which has since disbanded, was a public/private partnership, whose membership spanned across government, utilities, industry, and academe throughout Mexico, the United States, and Canada. The primary mission was to coordinate and enhance policy-relevant scientific research and assessment of tropospheric pollution behavior; activities provide input for science-based decision-making and determination of workable, efficient, and effective strategies for local and regional air-pollution management. Data products from local, regional, and international monitoring and research programs are still available.

    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 December 1, 2022
    Metadata Updated Date December 6, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 1, 2022
    Metadata Updated Date December 6, 2023
    Publisher NASA/LARC/SD/ASDC
    Maintainer
    Identifier C1000000100-LARC_ASDC
    Data First Published 2004-01-09
    Language en-US
    Data Last Modified 2018-04-18
    Category NARSTO, 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 2004-01-08. Archived by National Aeronautics and Space Administration, U.S. Government, NASA/LARC/SD/ASDC. https://doi.org/10.5067/ASDCDAAC/NARSTO/0057.
    Harvest Object Id cde5767c-f395-4189-b7ab-407022583a43
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/ASDCDAAC/NARSTO/0057
    Metadata Type geospatial
    Old Spatial <?xml version="1.0" encoding="UTF-8"?><gml:Polygon xmlns:gml="http://www.opengis.net/gml/3.2" srsName="EPSG:4326"><gml:outerBoundaryIs><gml:LinearRing><gml:posList>39.23 -76.62 39.23 -76.55 39.33 -76.55 39.33 -76.62 39.23 -76.62</gml:posList></gml:LinearRing></gml:outerBoundaryIs><gml:innerBoundaryIs></gml:innerBoundaryIs></gml:Polygon>
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 33515e4b02703ecde68f9f1bdf32ac227a2881f825c717ac25f260c97bbdc684
    Source Schema Version 1.1
    Spatial
    Temporal 2001-05-22T00:00:00Z/2002-09-05T23:59:59.999Z

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