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    <gcmd:termsOfUse>https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf</gcmd:termsOfUse>
    <gcmd:keywordVersion>draft</gcmd:keywordVersion>
    <gcmd:schemeVersion>2025-07-25</gcmd:schemeVersion>
    <gcmd:viewer>https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/projects/5e724bfb-8d71-4a38-83c0-95a7e07632e4</gcmd:viewer>
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    <skos:prefLabel xml:lang="en">MAGEQ</skos:prefLabel>
    <skos:changeNote>Date=2025-12-10 User Id=tstevens User Note=added new project keyword</skos:changeNote>
    <skos:changeNote>Date=2025-12-10 User Id=system System Note=Added broader relation from MAGEQ [5e724bfb-8d71-4a38-83c0-95a7e07632e4] to M - O [a31c2828-9b6d-44e9-b6ad-7ae81030f322]</skos:changeNote>
    <gcmd:reference gcmd:text="https://espo.nasa.gov/mageq" xml:lang="en"/>
    <skos:narrower/>
    <skos:definition xml:lang="en">The Mid-Atlantic Gas Emissions Quantification (MAGEQ) was a 2025 multi-aircraft Earth science campaign that coordinated aircraft, ground, and satellite observations to quantify greenhouse-gas and air-pollutant emissions over the mid-Atlantic U.S. and connect them to air quality, climate, and ecosystem processes. MAGEQ was led by NASA in partnership with NOAA, the University of Maryland Baltimore County, and numerous other universities and government organizations participating under a coordinated umbrella of independent missions and assets. Over about six weeks in 2025, six research aircraft flew more than 400 hours over cities, farms, wetlands, and coal mining areas, measuring gases such as methane, carbon dioxide, and other pollutants. MAGEQ aims to demonstrate and compare different ways of estimating emissions in priority regions (urban, agricultural, wetland, and coal/mining areas) and to scale detailed local measurements up to regional and annual emission estimates. The data are intended to support air-quality and climate research and to provide “application-ready” information that state agencies, land managers, and industry can use to monitor pollution, locate leaks, manage wetlands, and inform policy decisions related to air quality and greenhouse gases. </skos:definition>
    <dcterms:modified>2025-12-10T18:50:26.267Z</dcterms:modified>
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    <gcmd:altLabel gcmd:text="Mid-Atlantic Gas Emissions Quantification" xml:lang="en" gcmd:category="primary"/>
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