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IMOS - SOOP Ocean Carbon Dioxide Data from RV Southern Surveyor voyage SS2011_V07 (Hobart-Hobart)

Australian Ocean Data Network
Akl, John (Processor) Tilbrook, Bronte (Principal investigator )
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://catalogue-imos.aodn.org.au:443/geonetwork/srv/en/metadata.show?uuid=d4d5b871-f71a-4f2c-9d95-205a10c4d274&rft.title=IMOS - SOOP Ocean Carbon Dioxide Data from RV Southern Surveyor voyage SS2011_V07 (Hobart-Hobart)&rft.identifier=https://catalogue-imos.aodn.org.au:443/geonetwork/srv/en/metadata.show?uuid=d4d5b871-f71a-4f2c-9d95-205a10c4d274&rft.publisher=Integrated Marine Observing System (IMOS)&rft.description=This data was collected in November 2011 by the IMOS Ship of Opportunity Underway CO2 Measurement research group on RV Southern Surveyor (IMOS platform code: VLHJ) voyage SS2011_V07. Departed: Hobart, TAS, Nov 21, 2011 Arrived: Hobart, TAS, Nov 27, 2011 CO2 System Overview: The fugacity of carbon dioxide (fCO2) in surface seawater was measured using a General Oceanics Inc. automated system (Model 8050; Pierrot et al 2009). Seawater is sprayed into an equilibration chamber and CO2 in the headspace gas equilibrates with the seawater. The headspace gas is pumped through a thermoelectric condenser followed by a nafion drying tube before flowing through a Licor 7000 non-dispersive infrared gas analyser used to measure the CO2 mole fraction (XCO2) of the dried air. The gas flow is stopped temporarily for the CO2 measurements, which are made at atmospheric pressure. A set of four CO2 standards that cover the range of CO2 values expected in the ocean are analysed about every four hours to calibrate the gas analyser. The standard gas concentrations are on the WMO-X2007 mole fraction scale for CO2-in-air. Atmospheric XCO2 (dry) is measured after the standards by pumping clean outside air from an intake on the forward mast of the ship. Seawater intake and ancillary data: The seawater intake is located at about 5.5m depth in the bow of the ship. Sea surface salinity is measured using a thermosalinograph (Seabird Electronics SBE21) located next to the CO2 system. A remote temperature sensor (Seabird Electronics SBE 38) located at the intake is used to measure sea surface temperature (SST). The travel time between the intake and CO2 system is typically about 4 minutes with warming usually less than 0.6ºC. The thermosalinograph water is from the same intake, but the supply lines separate after the intake. A comparison of thermosalinograph and equilibrator temperature records shows the temperature difference in the two lines is generally less than 0.1ºC. The thermosalinograph water line travels outside the ship and is typically warmer than the equilibrator. The travel time in water line to the thermosalinograph is 2.5 minutes faster than to the equilibrator. Meteorological data, salinity, SST, and ships position and time are taken from the ships logging system. These parameters and the data quality are maintained by the Australian Marine National Facility.&rft.creator=Integrated Marine Observing System (IMOS) &rft.date=2013&rft.coverage=northlimit=-42.9040; southlimit=-46.7797; westlimit=141.9915; eastLimit=147.9309; projection=GDA94&rft.coverage=northlimit=-42.9040; southlimit=-46.7797; westlimit=141.9915; eastLimit=147.9309; projection=GDA94&rft_rights= http://creativecommons.org/licenses/by/4.0/&rft_rights=Data, products and services from IMOS are provided as is without any warranty as to fitness for a particular purpose.&rft_subject=Oceans&rft_subject=Countries | Australia&rft_subject=States, Territories (Australia) | Tasmania&rft_subject=Coastal Cities / Towns (Australia) | Hobart, Tas&rft_subject=Global / Oceans | Southern Ocean&rft_subject=Imos Sub-Facility | Soop-Co2 | Carbon Dioxide Measurements&rft_subject=2&rft_subject=Imos Node | Bluewater and Climate&rft_subject=Ocean Biogeochemistry&rft_subject=P Co2 &rft_subject=Partial Pressure&rft_subject=Fugacity&rft_subject=Sea Surface Temperature&rft_subject=Earth Science&rft_subject=Oceans&rft_subject=Ocean Temperature&rft_subject=Atmospheric Pressure&rft_subject=Atmosphere&rft_subject=Surface Winds&rft_subject=Ocean Winds&rft_subject=Salinity&rft_subject=Salinity/density&rft.type=dataset&rft.language=English Go to Data Providers

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http://creativecommons.org/licenses/by/4.0/

Data, products and services from IMOS are provided "as is" without any warranty as to fitness for a particular purpose.

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Brief description

This data was collected in November 2011 by the IMOS Ship of Opportunity Underway CO2 Measurement research group on RV Southern Surveyor (IMOS platform code: VLHJ) voyage SS2011_V07.

Departed: Hobart, TAS, Nov 21, 2011
Arrived: Hobart, TAS, Nov 27, 2011

CO2 System Overview:
The fugacity of carbon dioxide (fCO2) in surface seawater was measured using a General Oceanics Inc. automated system (Model 8050; Pierrot et al 2009). Seawater is sprayed into an equilibration chamber and CO2 in the headspace gas equilibrates with the seawater. The headspace gas is pumped through a thermoelectric condenser followed by a nafion drying tube before flowing through a Licor 7000 non-dispersive infrared gas analyser used to measure the CO2 mole fraction (XCO2) of the dried air. The gas flow is stopped temporarily for the CO2 measurements, which are made at atmospheric pressure. A set of four CO2 standards that cover the range of CO2 values expected in the ocean are analysed about every four hours to calibrate the gas analyser. The standard gas concentrations are on the WMO-X2007 mole fraction scale for CO2-in-air. Atmospheric XCO2 (dry) is measured after the standards by pumping clean outside air from an intake on the forward mast of the ship.

Seawater intake and ancillary data:
The seawater intake is located at about 5.5m depth in the bow of the ship. Sea surface salinity is measured using a thermosalinograph (Seabird Electronics SBE21) located next to the CO2 system. A remote temperature sensor (Seabird Electronics SBE 38) located at the intake is used to measure sea surface temperature (SST). The travel time between the intake and CO2 system is typically about 4 minutes with warming usually less than 0.6ºC. The thermosalinograph water is from the same intake, but the supply lines separate after the intake. A comparison of thermosalinograph and equilibrator temperature records shows the temperature difference in the two lines is generally less than 0.1ºC. The thermosalinograph water line travels outside the ship and is typically warmer than the equilibrator. The travel time in water line to the thermosalinograph is 2.5 minutes faster than to the equilibrator.

Meteorological data, salinity, SST, and ships position and time are taken from the ships logging system. These parameters and the data quality are maintained by the Australian Marine National Facility.

Notes

Integrated Marine Observing System (IMOS). IMOS is a national collaborative research infrastructure, supported by Australian Government.
Australian Marine National Facility (MNF)
CSIRO Marine and Atmospheric Research (CMAR)

Created: 11 01 2013

This dataset is part of a larger collection

147.9309,-42.904 147.9309,-46.7797 141.9915,-46.7797 141.9915,-42.904 147.9309,-42.904

144.9612,-44.84185

text: northlimit=-42.9040; southlimit=-46.7797; westlimit=141.9915; eastLimit=147.9309; projection=GDA94