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  • PANGAEA  (232)
  • American Society of Limnology and Oceanography  (1)
Document type
Keywords
Years
  • 1
    Publication Date: 2014-01-30
    Description: A new system is presented that allows the continuous measurement of methane and carbon dioxide concentrations in surface waters autonomously using ships of opportunity. The analytical setup consists of a methane carbon dioxide-Analyzer (MCA, Los Gatos Research) joined to an established equilibrator setup. The analyzer uses off-axis integrated cavity output spectroscopy (ICOS) and combines a highly specific infrared band laser with a set of strongly reflective mirrors to obtain an effective laser path length of several kilometers. This allows detecting methane and carbon dioxide in the equilibrated gas phase with high recision (less than 0.1%) and frequency. The system was installed on the cargo ship Finnmaid (Finnlines) in November 2009, which commutes regularly in the Baltic Sea between Travemünde (Germany), Gdynia (Poland), and Helsinki (Finland). Methane concentrations of the equilibrated gas phase measured by gas chromatography and by the MCA during lab tests are in excellent agreement. The comparison of carbon dioxide data measured by the MCA system to CO2 values gathered from the same type of equilibrator in combination with a LICOR CO2 detector (Schneider et al. 1992) during onboard operation show concordant results. The time constant for the system in freshwater at room temperature was determined to be 676 s for CH4 and 226 s for CO2. Additional performance tests are presented. First field results show large regional differences with remarkable features, especially in shallow regions, demonstrating the need for the high spatiotemporal data coverage provided by the instrument.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Limitation Availability
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  • 2
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; Carbon, total; Carbon dioxide, partial pressure; CT; DATE/TIME; DEPTH, water; Discretely sampled from water stream of Underway-Equilibrator-System; LATITUDE; LONGITUDE; OC16/11; OC16/11-track; Oceania; Oxygen; Oxygen saturation; pH; Salinity; Temperature, water; Underway cruise track measurements; Underway-Equilibrator-System
    Type: Dataset
    Format: text/tab-separated-values, 286 data points
    Location Call Number Limitation Availability
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  • 3
    Publication Date: 2023-05-12
    Keywords: ANT-X/1a; Carbon dioxide in the Atlantic Ocean; CARINA; CT; DATE/TIME; DEPTH, water; Fugacity of carbon dioxide (air, 100% humidity); Fugacity of carbon dioxide in seawater; LATITUDE; LONGITUDE; NDIR-based seawater-air equilibration technique; Polarstern; PS20; PS20/1a-track; Salinity; Temperature, water; Thermosalinograph; TSG; Underway cruise track measurements; Volume fraction of carbon dioxide in dry air
    Type: Dataset
    Format: text/tab-separated-values, 2482 data points
    Location Call Number Limitation Availability
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  • 4
    Publication Date: 2023-05-12
    Keywords: ARK-IX/1a; Carbon dioxide in the Atlantic Ocean; CARINA; CT; DATE/TIME; DEPTH, water; Fugacity of carbon dioxide (air, 100% humidity); Fugacity of carbon dioxide in seawater; LATITUDE; LONGITUDE; NDIR-based seawater-air equilibration technique; Polarstern; Pressure, atmospheric; PS24; PS24/1a-track; Salinity; Ship based meteorological sensor; Temperature, water; Thermosalinograph; TSG; Underway cruise track measurements; Volume fraction of carbon dioxide in dry air
    Type: Dataset
    Format: text/tab-separated-values, 5395 data points
    Location Call Number Limitation Availability
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  • 5
    Publication Date: 2023-01-13
    Keywords: Carbon dioxide, partial pressure; CT; DATE/TIME; DEPTH, water; LATITUDE; LONGITUDE; OC16/11; OC16/11-track; Oceania; Salinity; Temperature, water; Underway cruise track measurements; Underway-Equilibrator-System
    Type: Dataset
    Format: text/tab-separated-values, 10134 data points
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  • 6
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    PANGAEA
    In:  Leibniz Institute for Baltic Sea Research, Warnemünde
    Publication Date: 2023-06-10
    Keywords: 06AQ19930228-track; ARK-IX/1a; CT; DATE/TIME; Depth, bathymetric, interpolated/gridded; DEPTH, water; extracted from the 2-Minute Gridded Global Relief Data (ETOPO2); extracted from the NCEP/NCAR 40-Year Reanalysis Project; extracted from the World Ocean Atlas 2005; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); LATITUDE; LONGITUDE; Polarstern; Pressure, atmospheric; Pressure, atmospheric, interpolated; PS24; Recomputed after SOCAT (Pfeil et al., 2013); Salinity; Salinity, interpolated; SOCAT; Surface Ocean CO2 Atlas Project; Temperature, water; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 10622 data points
    Location Call Number Limitation Availability
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  • 7
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    PANGAEA
    In:  Leibniz Institute for Baltic Sea Research, Warnemünde
    Publication Date: 2023-06-10
    Keywords: 06AQ19911114-track; ANT-X/1a; CT; DATE/TIME; Depth, bathymetric, interpolated/gridded; DEPTH, water; extracted from the 2-Minute Gridded Global Relief Data (ETOPO2); extracted from the NCEP/NCAR 40-Year Reanalysis Project; extracted from the World Ocean Atlas 2005; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); LATITUDE; LONGITUDE; Polarstern; Pressure, atmospheric, interpolated; PS20; Recomputed after SOCAT (Pfeil et al., 2013); Salinity; Salinity, interpolated; SOCAT; Surface Ocean CO2 Atlas Project; Temperature, water; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 5738 data points
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  • 8
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    PANGAEA
    In:  Leibniz Institute for Baltic Sea Research, Warnemünde
    Publication Date: 2023-06-10
    Keywords: 06P119910616-track; CT; DATE/TIME; Depth, bathymetric, interpolated/gridded; DEPTH, water; extracted from the 2-Minute Gridded Global Relief Data (ETOPO2); extracted from the NCEP/NCAR 40-Year Reanalysis Project; extracted from the World Ocean Atlas 2005; Fugacity of carbon dioxide (water) at equilibrator temperature (wet air); Fugacity of carbon dioxide (water) at sea surface temperature (wet air); LATITUDE; LONGITUDE; POS182/6; Poseidon; Pressure, atmospheric, interpolated; Recomputed after SOCAT (Pfeil et al., 2013); Salinity, interpolated; SOCAT; Surface Ocean CO2 Atlas Project; Temperature, water; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 3333 data points
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  • 9
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    PANGAEA
    In:  Leibniz Institute for Baltic Sea Research, Warnemünde
    Publication Date: 2023-06-10
    Keywords: 2004-08-BS; 34FP20040731-track; CT; DATE/TIME; Depth, bathymetric, interpolated/gridded; DEPTH, water; extracted from the 2-Minute Gridded Global Relief Data (ETOPO2); extracted from the NCEP/NCAR 40-Year Reanalysis Project; extracted from the World Ocean Atlas 2005; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); LATITUDE; LONGITUDE; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pressure, atmospheric, interpolated; Recomputed after SOCAT (Pfeil et al., 2013); Salinity; Salinity, interpolated; SOCAT; Surface Ocean CO2 Atlas Project; Temperature, water; Underway cruise track measurements; VOS Finnpartner
    Type: Dataset
    Format: text/tab-separated-values, 150917 data points
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  • 10
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    PANGAEA
    In:  Leibniz Institute for Baltic Sea Research, Warnemünde
    Publication Date: 2023-06-10
    Keywords: 2005-08-BS; 34FP20050731-track; CT; DATE/TIME; Depth, bathymetric, interpolated/gridded; DEPTH, water; extracted from the 2-Minute Gridded Global Relief Data (ETOPO2); extracted from the NCEP/NCAR 40-Year Reanalysis Project; extracted from the World Ocean Atlas 2005; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); LATITUDE; LONGITUDE; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pressure, atmospheric, interpolated; Recomputed after SOCAT (Pfeil et al., 2013); Salinity, interpolated; SOCAT; Surface Ocean CO2 Atlas Project; Temperature, water; Underway cruise track measurements; VOS Finnpartner
    Type: Dataset
    Format: text/tab-separated-values, 112804 data points
    Location Call Number Limitation Availability
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