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	The distribution and origin of PAHs over the Asian marginal seas, the Indian, and the Pacific Oceans: Implications for outflows from Asia and Africa
	Liu, Junwen1,2; Xu, Yue1; Li, Jun1; Liu, Di1; Tian, Chongguo3,4; Chaemfa, Chakra1; Zhang, Gan1
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2014-02-27
卷号	119期号:4页码:1949-1961
关键词	Polycyclic Aromatic Hydrocarbon (PAHs) Aerosol Ocean Isomer Ratio
ISSN号	2169-897X
通讯作者	Xu, Y (reprint author), Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou, Guangdong, Peoples R China. xuyue@gig.ac.cn
产权排序	[Liu, Junwen; Xu, Yue; Li, Jun; Liu, Di; Chaemfa, Chakra; Zhang, Gan] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou, Guangdong, Peoples R China; [Liu, Junwen] Univ Chinese Acad Sci, Beijing, Peoples R China; [Tian, Chongguo] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai, Peoples R China; [Tian, Chongguo] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai, Peoples R China
中文摘要	Aerosol samples were collected aboard the R/V Dayang Yihao from 8 January to 7 August 2007 to investigate the geographical distribution of polycyclic aromatic hydrocarbons (PAHs) over oceans and to assess their continental origins. The highest concentrations were found over the marginal seas in Asia, especially the East and South China Seas, indicating that China is a top source of emissions into the marine atmosphere in the areas monitored on this cruise. PAH concentrations over the west oceanic region in the South Indian Ocean were noticeably higher than in other areas of the Indian Ocean, most likely because air masses from Africa, the Arabian Sea, and the Bay of Bengal exert a negative impact on those regions through long-range atmospheric transport. The PAH isomer ratio values varied over the oceans that were impacted by continental sources but remained relatively uniform over most of the remote oceans. Using diagnostic ratio analysis, we found PAHs emitted from China were mainly associated with biomass/coal burning. The measurements of levoglucosan were consistent with the results mentioned above. The western part of the South Indian Ocean atmosphere was likely affected by wildfire emissions from Africa, while the northern part was by petroleum combustion, biofuel, and wildfire burning, because the winter monsoon most likely carries aerosol from the Arabian Peninsula and India across the equator. Using the monthly images of fire activity and aerosol optical depth, it can be confirmed biomass burning from Africa can significantly influence the aerosol over the Indian Ocean.
英文摘要	Aerosol samples were collected aboard the R/V Dayang Yihao from 8 January to 7 August 2007 to investigate the geographical distribution of polycyclic aromatic hydrocarbons (PAHs) over oceans and to assess their continental origins. The highest concentrations were found over the marginal seas in Asia, especially the East and South China Seas, indicating that China is a top source of emissions into the marine atmosphere in the areas monitored on this cruise. PAH concentrations over the west oceanic region in the South Indian Ocean were noticeably higher than in other areas of the Indian Ocean, most likely because air masses from Africa, the Arabian Sea, and the Bay of Bengal exert a negative impact on those regions through long-range atmospheric transport. The PAH isomer ratio values varied over the oceans that were impacted by continental sources but remained relatively uniform over most of the remote oceans. Using diagnostic ratio analysis, we found PAHs emitted from China were mainly associated with biomass/coal burning. The measurements of levoglucosan were consistent with the results mentioned above. The western part of the South Indian Ocean atmosphere was likely affected by wildfire emissions from Africa, while the northern part was by petroleum combustion, biofuel, and wildfire burning, because the winter monsoon most likely carries aerosol from the Arabian Peninsula and India across the equator. Using the monthly images of fire activity and aerosol optical depth, it can be confirmed biomass burning from Africa can significantly influence the aerosol over the Indian Ocean.
学科主题	Meteorology & Atmospheric Sciences
研究领域[WOS]	Meteorology & Atmospheric Sciences
关键词[WOS]	POLYCYCLIC AROMATIC-HYDROCARBONS ; SOUTH ATLANTIC TRANSECT ; SOURCE IDENTIFICATION ; SOURCE APPORTIONMENT ; SPATIAL-DISTRIBUTION ; ORGANIC POLLUTANTS ; EMISSION INVENTORY ; DIAGNOSTIC RATIOS ; EXHAUST EMISSIONS ; SOOT PARTICLES
收录类别	SCI
语种	英语
WOS记录号	WOS:000333138300020
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/8559]
专题	烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
作者单位	1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou, Guangdong, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai, Peoples R China 4.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai, Peoples R China
推荐引用方式 GB/T 7714	Liu, Junwen,Xu, Yue,Li, Jun,et al. The distribution and origin of PAHs over the Asian marginal seas, the Indian, and the Pacific Oceans: Implications for outflows from Asia and Africa[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2014,119(4):1949-1961.
APA	Liu, Junwen.,Xu, Yue.,Li, Jun.,Liu, Di.,Tian, Chongguo.,...&Zhang, Gan.(2014).The distribution and origin of PAHs over the Asian marginal seas, the Indian, and the Pacific Oceans: Implications for outflows from Asia and Africa.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,119(4),1949-1961.
MLA	Liu, Junwen,et al."The distribution and origin of PAHs over the Asian marginal seas, the Indian, and the Pacific Oceans: Implications for outflows from Asia and Africa".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 119.4(2014):1949-1961.

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