This dataset includes surface underway chemical, physical and meteorological measurements during R/V Xue Long CHINARE2016 Expedition (EXPOCODE 76XL20160724) in the Bering Sea, Chukchi Sea and Arctic Ocean from 2016-07-24 to 2016-09-04. These data include measurements of Mole fraction of CO2 in the equilibrator headspace (dry) at equilibrator temperature, in parts per million, mole fraction of CO2 measured in dry outside air, barometric pressure in the equilibrator headspace, barometric pressure, corrected to sea level, water temperature in equilibrator, sea surface temperature, sea surface salinity, fugacity of CO2 in sea water at SST and 100% humidity, and difference between sea water fCO2 and interpolated air fCO2. The instruments used to collect these data include carbon dioxide (CO2) gas analyzer and shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement.

This dataset includes surface underway measurements of pH, salinity and water temperature obtained during R/V Xue Long CHINARE2018 Expedition (EXPOCODE 76XL20180723) Japan Sea, Sea of Okhotsk, North Pacific Ocean, Bering Sea, Chukchi Sea and Arctic Ocean from 2018-07-23 to 2018-09-22. The instrument used to measure pH data is an advanced spectrophotometric loop flow analyzer for high-precision seawater pH (LFA-pH). The pH data are calibrated with respect to discrete measurements of spectrophotometic pH during the cruise. The descriptions of data quality-control are given in a recently submitted manuscript to Geophysical Research Letters.

This dataset includes surface underway data collected from USCGC Healy Expeditions in the North Pacific Ocean, Gulf of Alaska, Bering Sea, Chukchi Sea and Arctic Ocean from 2019-07-25 to 2019-10-26. These data include barometric pressure, partial pressure carbon dioxide (pCO2) - water, sea surface salinity, sea surface temperature and barometric pressure. The instruments used to collect these data include Carbon dioxide (CO2) gas analyzer and shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement.

This dataset includes surface underway data collected from USCGC Healy in the North Pacific Ocean, Gulf of Alaska, Bering Sea, Chukchi Sea and Arctic Ocean from 2018-06-20 to 2018-10-18. These data include partial pressure of carbon dioxide (pCO2) - water, sea surface salinity, sea surface temperature and barometric pressure. The instruments used to collect these data include Carbon dioxide (CO2) gas analyzer and shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement.

This dataset includes surface underway data collected during USCGC Healy Expeditions in the North Pacific Ocean, Gulf of Alaska, Bering Sea, Chukchi Sea, Beaufort Sea, Arctic Ocean in 2024. These data include barometric pressure, partial pressure carbon dioxide (pCO2) - water, sea surface salinity, sea surface temperature and barometric pressure. The instruments used to collect these data include Carbon dioxide (CO2) gas analyzer and shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement.

This dataset includes surface underway data collected from R/V Sikuliaq Expeditions in the North Pacific Ocean, Gulf of Alaska, Bering Sea, Chukchi Sea and Arctic Ocean from 2019-03-01 to 2019-12-23. These data include barometric pressure, partial pressure carbon dioxide (pCO2) - water, sea surface salinity, sea surface temperature and barometric pressure. The instruments used to collect these data include Carbon dioxide (CO2) gas analyzer and shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement.

This dataset includes surface underway data collected from R/V Sikuliaq Expeditions in the North Pacific Ocean, Gulf of Alaska, Bering Sea, Chukchi Sea and Arctic Ocean from 2020-03-21 to 2020-12-12. These data include partial pressure carbon dioxide (pCO2) - air, partial pressure carbon dioxide (pCO2) - water, sea surface salinity, sea surface temperature and barometric pressure. The instruments used to collect these data include Carbon dioxide (CO2) gas analyzer and shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement.

This dataset includes surface underway data collected from USCGC Healy Expeditions in the North Pacific Ocean, Gulf of Alaska, Bering Sea, Chukchi Sea and Arctic Ocean from 2020-07-07 to 2020-08-30. These data include barometric pressure, partial pressure carbon dioxide (pCO2) - water, sea surface salinity, sea surface temperature and barometric pressure. The instruments used to collect these data include Carbon dioxide (CO2) gas analyzer and shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement.

This dataset includes surface underway data collected from R/V Sikuliaq in the North Pacific Ocean, Gulf of Alaska, Bering Sea, Chukchi Sea and Arctic Ocean from 2018-02-05 to 2018-12-10. These data include partial pressure of carbon dioxide (pCO2) - water, sea surface salinity, sea surface temperature and barometric pressure. The instruments used to collect these data include Carbon dioxide (CO2) gas analyzer and shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement.

This dataset includes surface underway data collected from R/V Sikuliaq Expeditions in the North Pacific Ocean, Gulf of Alaska, Bering Sea, Chukchi Sea and Arctic Ocean from 2021-03-05 to 2021-11-23. These data include partial pressure carbon dioxide (pCO2) - air, partial pressure carbon dioxide (pCO2) - water, sea surface salinity, sea surface temperature and barometric pressure. The instruments used to collect these data include Carbon dioxide (CO2) gas analyzer and shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement.