东印度洋海-气二氧化碳分压差及其通量研究

Differences of partial pressure of carbon dioxide between sea-air and its flux in East Indian Ocean

本文研究了第七、八次中国南极科学考察航渡中所观测到的海-气二氧化碳分压资料。结果表明，航线上20°N以北、20°～40°S之间及60°S以南的海域是大气二氧化碳的汇区，其间碳通量平均约为5.17mg／（m2·h）；20°N至20°S及40°～60°S则为大气二氧化碳的源区，其间碳通量平均约为3．70mg／（m2·h）。

In the present work the CO, differences between Pco2 in the surface seawater and pco2, in the atmosphere were determined on the route from Qindao to Antarctica during Seventh and Eighth Chinese Antarctic Research Expeditions. The results of survey indicate:the sea areas in north of 20°N, between 20°S and 40°S, in south of 60°S, serve as sinks for atmospheric CO2. The mean CO2 fluxes from atmoshere into sea water was about 5. 17mg/(m2. h) ; the sea areas between 20°N and 20°S,between 40°S and 60°S act as CO2 sources. The mean CO2fluxes from sea water into atmosphcrc was about 3. 70mg/(m2· h).