Abstract
Sensor for pCO‹SUB›2‹/SUB› measurement on the surface ocean has been developing to estimate flux of CO‹SUB›2‹/SUB› between atmosphere and ocean. This sensor will be attached on drifting buoy, and data are sent to laboratory through satellite. In this presentation, we introduce our developing system and basic technique for pCO‹SUB›2‹/SUB› measurement.