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The partial pressure of carbon dioxide and air-sea fluxes in the Changjiang River Estuary and adjacent Hangzhou Bay

查看全文 作　　者：YU [1,2,3]Peisong;ZHANG [2]Haisheng;ZHENG [2]Minhui;PAN [2]Jianming;BAI [4]Yan 高影响力作者 机构地区：[1]Institute of Oceanology, Chinese Academy of Sciences;[2]Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration;[3]Graduate University of Chinese Academy of Sciences;[4]State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration高影响力机构 出　　处：《Acta Oceanologica Sinica》索引2013年第32卷第6期,共5页高影响力期刊 基　　金：The Marine Public Welfare Project of China under contract Nos200805029,200905012,200905025,and 201005034;the Scientific Research Fund of the Second Institute of Oceanography,SOA under contract Nos JG0821 and JG1021 摘　　要：The distributions of partial pressure of carbon dioxide (p CO2 ) in the surface waters of the Changjiang River Estuary and adjacent Hangzhou Bay were examined in the summer of 2010. Surface water p CO2 ranged from 751-2 095 μatm (1 atm=101 325 Pa) in the inner estuary, 177-1 036 μatm in the outer estuary, and 498-1 166 μatm in Hangzhou Bay. Overall, surface p CO2 behaved conservatively during the estuary mixing. In the inner estuary, surface p CO2 was relatively high due to urbanized pollution and a high respiration rate. The lowest p CO2 was observed in the outer estuary, which was apparently induced by a phytoplankton bloom because the dissolved oxygen and chlorophyll a were very high. The Changjiang River Estuary was a significant source of atmospheric CO2 and the degassing fluxes were estimated as 0-230 mmol/(m2 d) [61 mmol/(m2 d) on average] in the inner estuary. In contrast, the outer estuary acted as a CO2 sink. 关 键 词：二氧化碳分压 杭州湾 长江口 通量 压力分布 表层海水 PCO2 PCO2
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