The partial pressure of carbon dioxide and air-sea fluxes in the Changjiang River Estuary and adjacent Hangzhou Bay
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- 作者：Peisong Yu (1) (2) (3)
Haisheng Zhang (2)
Minhui Zheng (2)
Jianming Pan (2)
Yan Bai (4) - 关键词：carbon dioxide ; air ; sea flux ; Changjiang River Estuary ; Hangzhou Bay
- 刊名：Acta Oceanologica Sinica
- 出版年：2013
- 出版时间：June 2013
- 年：2013
- 卷：32
- 期：6
- 页码：13-17
- 全文大小：486KB
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Haisheng Zhang (2)
Minhui Zheng (2)
Jianming Pan (2)
Yan Bai (4)
1. Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China
2. Laboratory ofMarine Ecosystemand Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, 310012, China
3. Graduate University of Chinese Academy of Sciences, Beijing, 100049, China
4. State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, 310012, China - ISSN：1869-1099
文摘
The distributions of partial pressure of carbon dioxide (pCO2) in the surface waters of the Changjiang River Estuary and adjacent Hangzhou Bay were examined in the summer of 2010. Surface water pCO2 ranged from 751- 095 μatm (1 atm=101 325 Pa) in the inner estuary, 177- 036 μatm in the outer estuary, and 498- 166 μatm in Hangzhou Bay. Overall, surface pCO2 behaved conservatively during the estuarymixing. In the inner estuary, surface pCO2 was relatively high due to urbanized pollution and a high respiration rate. The lowest pCO2 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 0-30 mmol/(m2·d) [61 mmol/(m2·d) on average] in the inner estuary. In contrast, the outer estuary acted as a CO2 sink.