Partial pressure (or fugacity) of carbon dioxide, salinity, oxygen and other variables collected from time series observations from Mooring Maria_Island_42S_148E deployed in the Tasman Sea, Pacific Ocean (NCEI Accession 0165305)
This dataset includes chemical, meteorological, physical time series data collected from Mooring Maria_Island_42S_148E deployed in the Tasman Sea, Pacific Ocean from 2011-04-20 to 2023-05-17. These data include mole fraction of CO2 in the equilibrator head space, mole fraction of CO2 in the atmosphere, fugacity of carbon dioxide at surface water, corrected for water vapour at surface water salinity and temperature, delta fCO2 = (fCO2_WET_SW - fCO2_WET_AIR), atmospheric pressure, equilibrator pressure, sea surface temperature, equilibrator temperature, sea surface salinity and concentration O2 in surface sea water. Measurements in the dataset are made with a Battelle Seaology pCO2 monitoring system (MApCO2), a Seabird SBE16plusV2 CTD, mounted on a surface buoy similar to the system described in Sutton et al. (2014), with an Aanderaa optode used to measure dissolved oxygen concentrations. The seawater sensor intakes for the MapCO2, SBE16Plus V2 and the optode are located at about 1m water depth. The CO2 measurement uses a bubble equilibrator (Sutton et al., 2014), where the air from the equilibrator headspace is circulated through a LI-COR 820 non-dispersive infrared detector (NDIR) for measurement of CO2. The system carries out an automated measurement sequence every 2 or 3 hours, depending on the instrumentation setup. At the beginning of each measurement sequence, the NDIR undergoes a two point calibration with a zero CO2 gas and a high CO2 standard span gas (typically 450-550 micromol/mol), which bracket the range of CO2 mole fractions in seawater and air. The zero CO2 gas is generated by cycling air through a soda lime chamber and silica gel to remove CO2 and water vapour, respectively. The CO2 span gas is prepared by the NOAA Earth Systems Research Laboratory in the USA and calibrated on the WMO X2007 scale with a standard deviation of 0.06 micromol/mol. Each measurement cycle of zero and span gas, equilibrator headspace, and air takes 20 minutes with the equilibrator headspace measurement occurring at about 17 minutes followed by the air measurement. The pressure measurements are considered the same for the equilibrator headspace gas and air measurements due to the design of the MapCO2 system (Sutton et al., 2014) as are the temperature and salinity of the surface seawater and the equilibrator measured by the Seabird SBE16PlusV2.
Dataset Citation
- Cite as: Tilbrook, Bronte; Neill, Craig; van Ooijen, Erik; Passmore, Abe; Black, James (2017). Partial pressure (or fugacity) of carbon dioxide, salinity, oxygen and other variables collected from time series observations from Mooring Maria_Island_42S_148E deployed in the Tasman Sea, Pacific Ocean (NCEI Accession 0165305). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v5bv7dt6. Accessed [date].
Dataset Identifiers
ISO 19115-2 Metadata
gov.noaa.nodc:0165305
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NOAA National Centers for Environmental Information +1-301-713-3277 NCEI.Info@noaa.gov |
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NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Time Period | 2011-04-20 to 2023-05-17 |
Spatial Bounding Box Coordinates |
West: 148.2375
East: 148.2375
South: -42.5962
North: -42.5962
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Supplemental Information | In this accession, NCEI has archived multiple versions of these data. The latest (and best) version of these data has the largest version number. |
Purpose | To understand the air-sea flux of heat and CO2 in the Tasman Sea |
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Last Modified: 2024-03-08T13:25:10Z
For questions about the information on this page, please email: ncei.info@noaa.gov
For questions about the information on this page, please email: ncei.info@noaa.gov