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The Ocean and Atmosphere in the Maritime Continent and Their Impacts
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Spatial distribution and impact factors of atmospheric trace elements over the Yellow Sea, East China Sea and Northern Pacific during spring
P-P5-05-S
Yayong Liu* , State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
Junyi Liu, State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
Xiaoshuang Guo, State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
Caiqing Yan, State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
Mei Zheng, State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
Presenter Email: craes_sp@163.com |
| High resolution ship-borne measurements of atmospheric trace elements (K, Ca, Fe, Mn, Cu, Zn, Ba, Pb, As, Se, V and Ni) were conducted over the Yellow Sea (YS), East China Sea (ECS) and Northern Pacific (NP) using Xact during spring, 2015. The aim of our work was to investigate the elemental spatial distribution and its impact factors. Overall, the YS region showed higher elemental concentrations compared to ECS and NP. The cruise over the YS were selected to further analyze using dust modeling and air mass back-trajectory calculation. Based on air mass source region and Principal Component Analysis (PCA), the cruise track could be divided into four sections. The Shandong Peninsula transect showed the highest elemental concentrations due to Asian dust transport and local combustion sources. Higher concentrations and fractions of Zn and Mn were investigated from Northwestern China transect, which were mainly impacted by numerous industrialized provinces such as Liaoning, Hebei, Tianjin and Beijing. Higher V/Ni ratios were found from southern China transect, which is mainly attributed to ship emissions along the Yangze River Delta coast. Our results showed that high latitude of YS are particularly impacted by continental pollution while low latitude of YS are more vulnerable to ship emissions. The patterns of elemental concentrations found in this study also provide support for further research of elemental deposition and productivity impact. |
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