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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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