Quality Control A new database of the pCO2 is made by the National Institute of Advance Industrial Science and Technology. The quality control for our new sensor is carried by using the database. The standard is also considered for the measurement. National Institute of Advance Industrial Science and Technology (AIST) Research Institute for Environmental Management Technology Global Environment Study Group Observation Systems Buoy and underway pCO2 system inter-comparison is made by National Institute for Environmental Studies. Observation system of data acquisition and distribution for our pCO2 buoy is also considered in this study. National Institute for Environmental Studies (NIES) Center for Global Environmental Research