title: Distribution and seasonal variation in the partial pressure of CO2 during autumn and winter in Jiaozhou Bay, a region of high urbanization.
abstract: We investigated the partial pressure of carbon dioxide (pCO(2)) in Jiaozhou Bay (JZB), which is surrounded by the economically developed city of Qingdao, during two cruises undertaken in November, 2007 (autumn) and February, 2008 (winter). Results indicated that sea surface pCO(2) in autumn varied between 315 and 720 μatm, with an average level of 418 μatm. In winter the sea surface pCO(2) ranged from 145 to 315 μatm with an average of 249 μatm, which is below atmospheric pCO(2). Despite seasonal temperature variation between autumn and winter, it was noted that biological process (production and respiration) were responsible for both spatial and seasonal variation during these seasons. We found that Jiaozhou Bay served as a net atmospheric CO(2) source in autumn (November) (2.87 mmol m(-2)d(-1)), while in winter (February) it served as a net sink (-16.22 mmol m(-2)d(-1)).
authors.affiliation: Key Laboratory of Marine Environment and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of China, Songling Road 238, Laoshan District, Qingdao 266100, China. Electronic address: longjunz@ouc.edu.cn.
authors.forename: Longjun
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Marine Environment and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of China, Songling Road 238, Laoshan District, Qingdao 266100, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Xue
authors.affiliation: Key Laboratory of Marine Environment and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of China, Songling Road 238, Laoshan District, Qingdao 266100, China.
authors.forename: Qizhen
authors.initials: Q
authors.lastname: Liu
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000706:statistics & numerical data; D061006:Bays / Q000737:chemistry*; D002245:Carbon Dioxide / Q000032:analysis*; D002681:China; D004784:Environmental Monitoring; D006801:Humans; D010313:Partial Pressure; D012621:Seasons; D014507:Urbanization
chemical_list: D000393:Air Pollutants; D002245:Carbon Dioxide