{
    "identifier": "gov.noaa.ncdc:C01555",
    "accessLevel": "public",
    "contactPoint": {
        "@type": "vcard:Contact",
        "fn": "Your contact point",
        "hasEmail": "mailto:[email protected]"
    },
    "programCode": [
        "010:000"
    ],
    "landingPage": "",
    "title": "Earth System Research Laboratory Halocarbons and Other Atmospheric Trace Gases Radiatively Important Trace Species (RITS) Measurements",
    "description": "The Halocarbons and other Atmospheric Trace Species (HATS) group aims to quantify the atmospheric burden, and the distributions and magnitudes of sources and sinks for nitrous oxide and other halogen containing compounds. They utilize numerous types of platforms, including ground-based stations, towers, ships, aircraft, and balloons to accomplish their mission. HATS measures chlorofluorocarbons (CFCs) at measurement sites spanning the globe. CFCs are non-toxic, non-flammable chemicals that contain carbon, chlorine, and fluorine atoms. CFCs were used as solvents, refrigerants, and aerosol sprays. While inert in the troposphere, they decompose in the stratosphere to release chlorine for destructive reactions with ozone. This process eventually led to the creation of the \"Ozone Hole\" over the Antarctic. Monitoring the amounts of CFCs and other trace gases is important, both for tracking the growth and recovery of the Ozone Hole, and because many upward trending trace gases are potent and durable greenhouse gases.\n\nOriginal in-situ sampling electron capture gas chromatographs (\"RITS\"): The Radiatively Important Trace Species (RITS) program consisted of five stand-alone systems that were used to make in-situ measurements at Barrow, AK (BRW), Mauna Loa, HI (MLO), American Samoa (SMO), South Pole, Antarctica (SPO), and Niwot Ridge, CO (NWR) from 1983 until 2001 when the last of the systems was retired. The RITS systems were replaced by the next-generation CATS systems that have remained operational since then. The RITS systems measured nitrous oxide (N2O),  the chlorofluorocarbons CFC-12 (CCl2F2), CFC-11 (CCl3F), and CFC-113 (CCl2F-CClF2, although quality measurements of this gas have been nullified by the lack of stable references during the RITS period), methyl chloroform (CH3CCl3), and carbon tetrachloride (CCl4) once per hour. \n\nThrough the Big Earth Data Initiative (BEDI), ESRL\/GMD has taken their data collection and converted files into NetCDF-4, a self-describing format.",
    "language": "",
    "distribution": [
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    ],
    "bureauCode": [
        "010:04"
    ],
    "modified": "2025-11-20T02:55:25.479Z",
    "publisher": {
        "@type": "org:Organization",
        "name": "Your Publisher"
    },
    "theme": "",
    "keyword": [
        "Earth Science > Atmosphere > Atmospheric Chemistry > Nitrogen Compounds > Nitrous Oxide",
        "Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Chlorofluorocarbons",
        "Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Carbon Tetrachloride",
        "Atmospheric - Composition - Carbon Dioxide, Methane and other Greenhouse Gases (including N2O, CFCs, HCFCs, HFCs, SF6 and PFCs)",
        "Continent > North America > United States Of America > Alaska",
        "Continent > North America > United States Of America > Hawaii",
        "Continent > North America > United States Of America > Colorado",
        "Ocean > Pacific Ocean > Central Pacific Ocean > American Samoa",
        "Continent > Antarctica",
        "Vertical Location > Land Surface",
        "ESRL > Earth System Research Laboratory (NOAA)",
        "GAS CHROMATOGRAPHS",
        "AIR MONITORING STATIONS\/NETWORKS",
        "ESRL STATIONS > NOAA Earth Science Research Laboratory Stations",
        "Point Resolution",
        "Point Resolution",
        "DOC\/NOAA\/ESRL\/GMD > Global Monitoring Division, Earth System Research Laboratory, NOAA, U.S. Department of Commerce",
        "DOC\/NOAA\/NESDIS\/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce",
        "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > HALOCARBONS AND HALOGENS > METHYL CHLOROFORM",
        "Ozone Depletion",
        "Montreal Protocol",
        "Halocarbons",
        "Atmospheric - Composition - Nitrous Oxide and Greenhouse Gases (including CFCs, halons, and SF6)",
        "climatologyMeteorologyAtmosphere"
    ]
}