This dataset contains data from underway fCO2 (seawater and atmospheric), temperature, and salinity measurements collected on MV Cap Vilano three trans-Pacific cruises in 2013 as part of a ship-of-opportunity time-series. Cruise names and expocodes: CV2013_02 (AGB620130201), CV2013_03 (AGB620130328), CV2013_05 (AGB620130524). Since 1992, underway CO2 observations have been made between New Zealand and the U.S. West Coast. This effort was conducted with the support of NOAA's Ocean Observing and Monitoring Division in the Climate Program Office (CPO) and NOAA's Ocean Acidification Program (OAP).

This dataset consists of the surface underway measurements of mole fraction of CO2 in the equilibrator headspace (dry) at equilibrator temperature (ppm), mole fraction of CO2 measured in dry outside air (ppm), mole fraction of CO2 in outside air associated with each water analysis. These values are interpolated between the bracketing averaged good xCO2_ATM analyses (ppm), barometric pressure in the equilibrator headspace (hPa), barometric pressure measured outside, corrected to sea level (hPa), water temperature in equilibrator (°C), sea surface temperature (°C), sea surface salinity, fugacity of CO2 in sea water at SST and 100% humidity (μatm), fugacity of CO2 in air corresponding to the interpolated xCO2 at SST and 100% humidity (μatm), sea water fCO2 minus interpolated air fCO2 (μatm). The measurement were performed during the SOOP National Geographic Islander II cruises in the Equatorial Pacific Ocean in 2024.

This dataset contains data from underway fCO2 (seawater and atmospheric), water temperature, and salinity measurements collected on container ship Albert Rickmers two trans-Pacific cruises in 2007 as part of a ship-of-opportunity time-series. Trans-Pacific cruise names and EXPOCODEs: AR2007_09 (54WC20060923), AR2007_10 (54WC20061029). Since 1992, underway CO2 observations have been made between New Zealand and the U.S. West Coast. This effort was conducted with the support of NOAA's Ocean Observing and Monitoring Division in the Climate Program Office (CPO).

This dataset contains partial pressure (or fugacity) of carbon dioxide, water temperature, salinity and other variables collected from surface underway observations during the FerryBox ship Lysbris Seaways ships of opportunity (SOOP) cruises in the North Sea, North Atlantic Ocean from 2013-09-14 to 2023-10-28.

This dataset contains data from underway fCO2 (seawater and atmospheric), ISFET-based pH (total scale), temperature, and salinity measurements collected on 4 trans-Pacific cruises in 2017 as part of a ship-of-opportunity time-series. Cruise names and expocodes: CB2017_01 (AG5W20170115), CB2017_03 (AG5W20170312), CB2017_05 (AG5W20170507), CB2017_11 (AG5W20171117). Since 1992, underway CO2 observations have been made between New Zealand and the U.S. West Coast. In 2010, ISFET-based pH measurements (total scale) were added to this equatorial Pacific SOOP-based time-series. All pH data, when available, are reported on the total scale and at SST. This effort was conducted with the support of NOAA's Ocean Observing and Monitoring Division in the Climate Program Office (CPO) and NOAA's Ocean Acidification Program (OAP).

This dataset includes surface underway, chemical, meteorological and physical data collected from M/S New Century 2 in the Pacific Ocean from 2024-01-01 to 2024-10-28. These data include absolute humidity, air temperature, air-sea difference - partial pressure of carbon dioxide, barometric pressure, partial pressure of carbon dioxide - atmosphere, partial pressure of carbon dioxide - water, relative humidity, sea surface salinity, sea surface temperature and wind direction and speed. The instruments used to collect these data include barometric pressure sensor, carbon dioxide (CO2) gas analyzer, tandem (bubble+mixer) type equilibrator for autonomous CO2 measurement and thermosalinographs.

This dataset consists of the surface underway measurements of mole fraction of CO2 in the equilibrator headspace (dry) at equilibrator temperature (ppm), mole fraction of CO2 measured in dry outside air (ppm), mole fraction of CO2 in outside air associated with each water analysis, barometric pressure in the equilibrator headspace (hPa), barometric pressure, corrected to sea level (hPa), water temperature in equilibrator, sea surface temperature, sea surface salinity, fugacity of CO2 in sea water at SST and 100% humidity (uatm), fugacity of CO2 in air corresponding to the interpolated xCO2 at SST and 100% humidity (uatm), sea water fCO2 minus interpolated air fCO2 (uatm). The measurement were performed during the Ship of Opportunity (SOOP) M/V Las Cuevas cruises in the North Atlantic Ocean, Gulf of Mexico, Caribbean Sea and Mediterranean Sea from 2010-01-30 to 2011-01-04.

This dataset consists of surface underway measurements of partial pressure (or fugacity) of carbon dioxide (seawater and atmospheric), ISFET-based pH (total scale), temperature, and salinity collected on 5 trans-Pacific sections during the container ship Cap Blanche ship-of-opportunity (SOOP) cruises in the Pacific Ocean from 2018-01-12 to 2018-09-04. Cruise names and EXPOCODEs: CB2018_01 (AG5W20180112), CB2018_03 (AG5W20180309), CB2018_05 (AG5W20180502), CB2018_07 (AG5W20180630), CB2018_09 (AG5W20180827). Since 1992, underway CO2 observations have been made between New Zealand and the U.S. West Coast. In 2010, ISFET-based pH measurements (total scale) were added to this equatorial Pacific SOOP-based time-series. All pH data, when available, are reported on the total scale and at SST. This effort was conducted with the support of NOAA's Ocean Observing and Monitoring Division in the Climate Program Office (CPO) and NOAA's Ocean Acidification Program (OAP).

This dataset contains surface underway measurements of partial pressure (or fugacity) of carbon dioxide, water temperature, salinity and other variables collected during the container ship Cap Victor ships of opportunity (SOOP) cruises in the Caribbean Sea, North Atlantic Ocean and Pacific Ocean from 2006-05-23 to 2006-09-03. SOOP cruise names and EXPOCODEs: CV2006_05 (06CK20060523), CV2006_07 (06CK20060715), CV2006_08 (06CK20060821). Since 1992, underway CO2 observations have been made between New Zealand and the U.S. West Coast. This effort was conducted with the support of NOAA's Ocean Observing and Monitoring Division in the Climate Program Office (CPO).

This dataset includes surface underway chemical, meteorological and physical data collected during the R/V Oshoro Maru V cruises in the North Pacific Ocean from 2022-03-17 to 2022-12-07. These data include measurements of sea surface temperature (SST), equilibrator temperature (TEQ), equilibrator pressure (PEQ), mole fraction of carbon dioxide (xCO2) in dry air at TEQ, pCO2 at TEQ (PCO2TEQ). The instruments used to collect these data include carbon dioxide (CO2) gas analyzer and Tandem (bubble+mixer) type equilibrator for autonomous CO2 measurement.