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Atmospheric methane and carbon dioxide concentrations measured during ALKOR cruise AL575 on 2022-06-29

Description: Atmospheric carbon dioxide (CO2) and methane (CH4) concentrations were monitored during AL575 cruise on 2022-06-29 using a cavity ring down spectrometer (Picarro G2301-f CRDS) and GEOMARs 'Atmospheric Intake System' (AIS). The Picarro/AIS system was installed in the wet laboratory (starboard, main deck) of RV ALKOR and was connected by an aluminium tube to an air inlet nozzle placed at the bow of RV ALKOR. The air was pumped via the AIS intake tube with a flow rate of 2.67 litre per minute to the Picarro analyser. The atmospheric CH4, CO2, and water vapour concentrations were determined in real time at 2-3 Hz sampling rate. A time offset of 87 seconds between the air intake nozzle at the bow (6 m above sea surface) and the actual gas measurement at the Picarro was determined and the calculated flow rate considered, when correlating the gas data with navigation and weather data provided by the WERUM dship repository (https://dship.geomar.de).

Global identifier: 

Doi(
    "10.1594/PANGAEA.982666",
)

Types: 
Measurements {
    domain: Unspecified,
    station: None,
    measured_variables: [
        "DATE/TIME",
        "ALTITUDE",
        "Methane, dry air",
        "Carbon dioxide, dry air",
        "Water vapour content",
        "LATITUDE",
        "LONGITUDE",
        "Heading",
        "Speed over ground",
        "Course over ground",
        "Pressure, atmospheric",
        "Temperature, air",
        "Humidity, relative",
        "Temperature, water",
        "Wind direction, relative",
        "Wind speed, relative",
        "Wind speed, true",
    ],
    methods: [
        "Cavity ring down spectrometer (CRDS) , Picarro Inc., G2301-f",
        "Cavity ring down spectrometer (CRDS) , Picarro Inc., G2301-f",
    ],
}
Dataset

Origins: /Wissenschaft/PANGAEA

Tags: Atmosphärische CO2-Konzentration ? Windgeschwindigkeit ? CO2-Konzentration ? Aluminium ? Wasserdampf ? Treibhausgasemission ? Geografische Koordinaten ? Gasmessung ? Lagerstätte ? Methan ? U-Bahn ? Wetterdaten ? Fließgeschwindigkeit ? Meeresoberfläche ? Höhle ? Nordsee ? atmospheric carbon dioxide ? atmospheric methane ?

Bounding boxes: 7.00110742464° .. 10.8498014419712° x 53.8409080070016° .. 54.7026355119232°

License: cc-by/4.0

Data access requires registration: click here for further information

Language: Englisch/English

Organisations

Persons

Modified: 2025-05-26

Time ranges: 2022-06-29 - 2022-06-29

Resources

Status

Quality score

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