Partial pressure (or fugacity) of carbon dioxide, water temperature, salinity and other variables collected from surface underway observations from R/V Mirai cruise MR21-05C (EXPOCODE 49NZ20210901) in the North Pacific Ocean, Bering Sea, Chukchi Sea, Arctic Ocean from 2021-09-01 to 2021-10-11 (NCEI Accession 0292097)

This dataset includes surface underway, chemical, meteorological and physical data collected from R/V Mirai cruise MR21-05C (EXPOCODE 49NZ20210901) in the North Pacific Ocean, Bering Sea, Chukchi Sea, Arctic Ocean from 2021-09-01 to 2021-10-11. These data include water temperature, barometric pressure, partial pressure (or fugacity) of carbon dioxide - atmosphere, partial pressure (or fugacity) of carbon dioxide - water. The instruments used to collect these data include Carbon dioxide (CO2) gas analyzer and shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement.