Global warming is mainly caused by the excess carbon dioxide (CO2 ) in air. As the largest store of CO2 on the earth, ocean plays an extremely important role for regulating the CO2 concentration in the atmosphere. Getting the information on the spatial and temporal distribution of CO2 in seawater timely is very important for studying the marine carbon cycle, the marine ecology and the change in global climate. Therefore, it is important and necessary to develop a high-precision and low-power detecting instrument for in situ measurement of CO2 in the sea.

二氧化碳是造成全球气候变暖的主要因素,海洋作为地球上最大的二氧化碳贮存库,对调节大气中二氧化 碳浓度发挥着重要的作用。 及时获取海水中二氧化碳时空分布的准确信息对研究海洋碳循环、海洋生态环境和全球 气候变化具有非常重要的意义。