{
    "identifier": "gov.noaa.nodc:0259963",
    "accessLevel": "public",
    "contactPoint": {
        "@type": "vcard:Contact",
        "fn": "Your contact point",
        "hasEmail": "mailto:[email protected]"
    },
    "programCode": [
        "010:000"
    ],
    "landingPage": "",
    "title": "Discrete profile and surface underway measurements of carbonate chemistry and others hydrographic and chemical parameters, collected during R\/V Neeskay and R\/V Osprey cruises in Lake Michigan from 2017-05-01 to 2022-04-30 (NCEI Accession 0259963)",
    "description": "This dataset consists of discrete profile and surface underway measurements of carbonate chemistry and others hydrographic and chemical parameters, collected during R\/V Neeskay and R\/V Osprey cruises in Lake Michigan from 2017-05-01 to 2022-04-30. Water chemistry and conductivity-temperature-depth (CTD) profiles were measured at several stations in Lake Michigan, ranging in depth from 10 to 55 m, in a region northeast of Milwaukee Harbor.  Measurements included soluble reactive phosphorus, total dissolved phosphorus, particulate phosphorus, chlorophyll-a,  the concentrations and stable isotope ratios of particulate carbon and particulate nitrogen, dissolved carbon dioxide, dissolved total inorganic carbon, and dissolved organic carbon.  In addition, continuous lake surface and atmospheric CO2 data collected in 2019 and 2021 on a Lake Michigan transect between Milwaukee, WI and Muskegon MI.  Measurements were made with a CO2 monitoring system mounted on a high-speed ferry that crosses the lake 4 to 6 times daily between May and October.  The monitoring system consists of a \"wet\" box which includes a peristaltic pump that draws water from the ship's sea chest and an equilibrator in which dissolved gases are equilibrated with a recirculating air flow.  The air is pumped through a desiccant to remove moisture, after which it flows to a \"dry\" box where it passes through an infrared gas analyzer.  A similar system, without the peristaltic pump or equilibrator, is mounted near the bow of the ship to record atmospheric CO2 concentration.  These chemical measurements have several applications, including: 1) Constructing an annual carbon and nutrient budget for the water column, which is used along with direct measurements of quagga mussel nutrient recycling to assess the role of invasive quagga mussels in the lake's carbon and nutrient cycles;  2) When combined with separate measurements of the vertical structure of water density and currents, to quantify vertical fluxes of dissolved nutrients and inorganic carbon, to determine how carbon and nutrient recycling by profundal quagga mussels may affect plankton production in the euphotic zone;  3) The calibration and validation of physical \/ biogeochemical models used to better understand how invasive quagga mussel have altered energy flow and nutrient dynamics in the Great Lakes, and guide management decisions with regard to nutrients and fish stocking.",
    "language": "",
    "distribution": [
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            "@type": "dcat:Distribution",
            "mediaType": "application\/json",
            "accessURL": "https:\/\/www.ncei.noaa.gov\/metadata\/geoportal\/\/rest\/metadata\/item\/gov.noaa.nodc%3A0259963"
        },
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            "accessURL": "https:\/\/www.ncei.noaa.gov\/metadata\/geoportal\/\/rest\/metadata\/item\/gov.noaa.nodc%3A0259963\/html"
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    ],
    "bureauCode": [
        "010:04"
    ],
    "modified": "2025-11-19T16:29:48.566Z",
    "publisher": {
        "@type": "org:Organization",
        "name": "Your Publisher"
    },
    "theme": "",
    "keyword": [
        "0259963",
        "CHLOROPHYLL - RELATIVE FLUORESCENCE",
        "CHLOROPHYLL A - INTEGRATED",
        "CONDUCTIVITY",
        "DISSOLVED INORGANIC CARBON (DIC)",
        "DISSOLVED ORGANIC CARBON",
        "DISSOLVED OXYGEN",
        "NITROGEN - PARTICULATE",
        "partial pressure of carbon dioxide - water",
        "PARTICULATE CARBON",
        "pH",
        "PHOSPHATE - SOLUBLE REACTIVE",
        "PHOTOSYNTHETIC ACTIVE RADIATION (PAR)",
        "WATER TEMPERATURE",
        "xCO2 seawater",
        "carbon dioxide (CO2) gas analyzer",
        "CTD",
        "fluorometer",
        "mass spectrometer",
        "spectrophotometer",
        "Total Organic Carbon (TOC) analyzer",
        "in situ",
        "laboratory analyses",
        "NEESKAY",
        "Osprey",
        "University of Wisconsin - Milwaukee",
        "University of Wisconsin - Milwaukee",
        "US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP)",
        "Great Lakes",
        "oceanography",
        "Ocean Carbon and Acidification Data System (OCADS) Project",
        "Collaborative Research: Regulation of plankton and nutrient dynamics by hydrodynamics and profundal filter feeders.",
        "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON",
        "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON DIOXIDE",
        "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL",
        "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON",
        "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITROGEN",
        "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ORGANIC CARBON",
        "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN",
        "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH",
        "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PHOSPHATE",
        "EARTH SCIENCE > OCEANS > OCEAN OPTICS > PHOTOSYNTHETICALLY ACTIVE RADIATION",
        "EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE",
        "EARTH SCIENCE > OCEANS > SALINITY\/DENSITY > CONDUCTIVITY",
        "Profile",
        "Surface underway",
        "CHLOROPHYLL",
        "CHLOROPHYLL A",
        "CONDUCTIVITY",
        "DISSOLVED INORGANIC CARBON (DIC)",
        "DISSOLVED ORGANIC CARBON",
        "DISSOLVED OXYGEN",
        "NITROGEN - PARTICULATE",
        "PARTICULATE CARBON",
        "PHOTOSYNTHETIC ACTIVE RADIATION (PAR)",
        "Phosphate",
        "Phosphorus",
        "WATER TEMPERATURE",
        "pCO2",
        "pH",
        "xCO2 seawater",
        "CO2 ANALYZERS > CO2 ANALYZERS",
        "CTD > Conductivity, Temperature, Depth",
        "FLUOROMETERS > FLUOROMETERS",
        "MASS SPECTROMETERS > MASS SPECTROMETERS",
        "OPTSPEC > Optical Spectrometer",
        "TOC > Total Organic Carbon Analyzer",
        "Gas chromatograph",
        "Sea-Bird SBE 25 plus CTD",
        "Ships",
        "NEESKAY (ICES code: 32N7)",
        "OSPREY (ICES code: 33Z0)",
        "R\/V Neeskay; R\/V Osprey",
        "CONTINENT > NORTH AMERICA > CANADA > GREAT LAKES, CANADA",
        "CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > GREAT LAKES",
        "Lake Michigan",
        "Lake Michigan",
        "N8BN2W",
        "environment",
        "oceans"
    ]
}