Partial Pressure of CO2 in Surface Sea Water refers to the pressure that would be exerted by CO2 if all other gases were removed. Partial pressure of a gas dissolved in seawater is understood as the partial pressure in air that the gas would exert in a hypothetical air volume in equilibrium with that seawater. pCO2 in surface seawater is determined optically by measuring the infrared absorbance level of CO2.

Instrument Classes

The following instrument classes include this data product:

Typical Units


Sampling Regime

Air-Sea Interface

Data Product Specification