{
    "tag": 18736,
    "title": "Methane and carbon dioxide concentration data, environmental data, and calculations used to determine sea-air flux on the northern Greenland margin",
    "pubdate": "20241220",
    "sername": null,
    "series_name": null,
    "issue": "DOI:10.5066\/P15TMWWP",
    "publish": null,
    "publisher_name": null,
    "onlink": "https:\/\/cmgds.marine.usgs.gov\/catalog\/whcmsc\/SB_data_release\/DR_P15TMWWP\/Greenland2019_Metadata_Release_final.faq.html",
    "format": null,
    "email": null,
    "descript": "Determining how much methane and carbon dioxide cross the sea-air interface is critical when assessing marine greenhouse gas fluxes. This assessment is particularly important on Arctic Ocean continental margins, where rapid climate change is thawing glacial ice and permafrost; reducing sea ice cover; and changing water temperatures, salinities, nutrient loads, and ocean currents. This dataset was collected in the Sherard Osborn Fjord and adjacent areas of the Nares Strait and Lincoln Sea on the northern Greenland margin during the 2019 Ryder Expedition (known as SWEDARCTIC Ryder 2019), which is also identified as U.S. Geological Survey (USGS) Coastal and Marine Hazards and Resources Program Field Activity 2019-042-FA. The University of Stockholm led the expedition aboard the Swedish icebreaker Oden (IB Oden), in collaboration with the University of New Hampshire and the USGS. The dataset contains 30-second interpolated methane and carbon dioxide concentrations in near-surface seawater and the atmospheric marine boundary layer and provides the calculations used to determine the sea-air flux. The dataset also contains environmental data, including seawater salinity, wind speed, water and air temperatures, water depth, seawater pH, seawater dissolved oxygen, seawater fluorescent dissolved organic matter, seawater oxidation-reduction potential, seawater phycoerythrin, and seawater chlorophyll.",
    "lang": null,
    "journal": null,
    "pwid": null,
    "originator": [
        {
            "name": "Boze, Lee-Gray",
            "role": "Author"
        },
        {
            "name": "Thornton, Brett",
            "role": "Author"
        },
        {
            "name": "Pohlman, John W.",
            "role": "Author"
        },
        {
            "name": "Ruppel, Carolyn D.",
            "role": "Author"
        }
    ],
    "index_term": [
        {
            "thcode": 2,
            "code": "27",
            "name": "air temperature",
            "scope": null
        },
        {
            "thcode": 2,
            "code": "141",
            "name": "carbon cycling",
            "scope": "The circulation of carbon in the biosphere, atmosphere, and hydrosphere through a series of processes that include photosynthesis, consumption, and respiration."
        },
        {
            "thcode": 2,
            "code": "2277",
            "name": "carbon flux",
            "scope": "The rate and amount of carbon exchanged between the oceans, atmosphere, land, and living things."
        },
        {
            "thcode": 2,
            "code": "703",
            "name": "marine chemistry",
            "scope": "Branch of chemistry that deals with the properties, composition, structure, and interaction of substances in the seas and oceans."
        },
        {
            "thcode": 2,
            "code": "823",
            "name": "ocean-atmosphere interaction",
            "scope": "Processes, including momentum, heat, gas and other exchanges, which result in profound effects on climate and interactions between the air in the lowest part of the atmosphere and the oceans."
        },
        {
            "thcode": 2,
            "code": "817",
            "name": "ocean salinity",
            "scope": "Measure of the percentage of dissolved salts in seawater."
        },
        {
            "thcode": 2,
            "code": "817",
            "name": "ocean salinity",
            "scope": "Measure of the percentage of dissolved salts in seawater."
        },
        {
            "thcode": 2,
            "code": "819",
            "name": "ocean temperature",
            "scope": "Distribution of heat in the oceans, including surface water, thermocline and mode waters, and deep waters.  Includes discussion and measures of both in-situ and potential temperature."
        },
        {
            "thcode": 2,
            "code": "854",
            "name": "oxygen content (water)",
            "scope": "Measurement of the concentration of oxygen dissolved in water, which is an important indicator of the condition of a water body."
        },
        {
            "thcode": 2,
            "code": "1027",
            "name": "sea surface temperature",
            "scope": "Observed temperature of surface ocean waters, typically encompassing the entire mixed layer. Some observational methods, however, may measure a much smaller depth range.  Includes temperature data obtained in-situ or by remote sensing methods."
        },
        {
            "thcode": 2,
            "code": "1302",
            "name": "water pH",
            "scope": "The negative logarithm of the hydrogen ion concentration or activity of a water solution. Used for expressing both acidity (pH less than 7) and alkalinity (pH greater than 7), with 7 considered neutral."
        },
        {
            "thcode": 2,
            "code": "1312",
            "name": "water temperature",
            "scope": "The degrees of heat of water from a given source at a specific time."
        },
        {
            "thcode": 15,
            "code": "004",
            "name": "climatologyMeteorologyAtmosphere",
            "scope": "Processes and phenomena of the atmosphere, for example cloud cover, weather, climate, atmospheric conditions, climate change, precipitation"
        },
        {
            "thcode": 15,
            "code": "007",
            "name": "environment",
            "scope": "Environmental resources, protection and conservation, for example environmental pollution, waste storage and treatment, environmental impact assessment, monitoring environmental risk, nature reserves, landscape, water quality, air quality, environmental modeling"
        },
        {
            "thcode": 15,
            "code": "008",
            "name": "geoscientificInformation",
            "scope": "Information pertaining to earth sciences, for example geophysical features and processes, geology, minerals, sciences dealing with the composition, structure and origin of the earth's rocks, risks of earthquakes, volcanic activity, landslides, gravity information, soils, permafrost, hydrogeology, groundwater, erosion"
        },
        {
            "thcode": 15,
            "code": "014",
            "name": "oceans",
            "scope": "Features and characteristics of salt water bodies (excluding inland waters), for example tides, tidal waves, coastal information, reefs, maritime, outer continental shelf submerged lands, shoreline"
        },
        {
            "thcode": 61,
            "code": "437",
            "name": "oceanographic observations",
            "scope": "used for field observations related to all aspects of oceanography: physical, chemical, and biological; may also be used for field studies of freshwater bodies that use oceanographic techniques."
        },
        {
            "thcode": 61,
            "code": "441",
            "name": "seepage studies",
            "scope": "used for studies of submarine groundwater discharge and other forms of fluid exchange between a body of water and the surrounding substrate (sea floor, lake floor, etc.)."
        }
    ],
    "place_term": [
        {
            "thcode": 1,
            "code": "fGL",
            "name": "Greenland",
            "scope": "country",
            "pname": "North America"
        }
    ],
    "image": [
        {
            "name": "https:\/\/www.sciencebase.gov\/catalog\/file\/get\/669955b7d34e9ac16e164c82?name=oden2019_browsegraphic.jpg&allowOpen=true",
            "description": "Thumbnail image showing the extent of underway measurements of near-surface and atmospheric methane and carbon dioxide and environmental parameters during the 2019 Ryder cruise during USGS Field Activity 2019-FA-042."
        }
    ],
    "fan": [
        "2019-042-FA"
    ]
}