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Atmospheric transport and input of hydrocarbons to the subtropical North Atlantic
Institution:1. CAS Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, China;2. Shandong Key Laboratory of Coastal Environmental Processes, Yantai, Shandong 264003, China;3. University of Chinese Academy of Sciences, Beijing 100049, China;4. Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong 266071, China;5. Shenzhen Institute of Guangdong Ocean University, Shenzhen, Guangdong 518114, China;1. CAS Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, China;2. Shandong Key Laboratory of Coastal Environmental Processes, Yantai, Shandong 264003, China;3. University of Chinese Academy of Sciences, Beijing 100049, China;4. Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong 266071, China;1. CAS Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, China;2. Shandong Key Laboratory of Coastal Environmental Processes, Yantai, Shandong 264003, China;3. University of Chinese Academy of Sciences, Beijing 100049, China;4. Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong 266071, China;5. Shenzhen Institute of Guangdong Ocean University, Shenzhen, Guangdong 518114, China
Abstract:Seawater samples and airborne particulate material were collected in the subtropical North Atlantic during R.V. “Meteor” Cruise M60 (N34°47.2′W26°57.7′/N10°1.3′W32°58.3′). Hydrocarbon concentrations were estimated in the samples. For seawater the concentrations ranged from 0.2 μg to 3.5 μg dm?3. In the open ocean air the concentrations of the particulate hydrocarbon measured at 14m above sea level ranged from 2.8 ng to 133.1 ng m?3. A significant increase was observed during a Saharan dust outbreak. Comparison with aluminium concentrations in seawater and in the air suggests input of atmospheric hydrocarbons by dry deposition to be an important transportation pathway.
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