globalchange  > 气候变化与战略
DOI: 10.1016/j.atmosenv.2019.117209
论文题名:
Aeolian transport and deposition of carbonaceous aerosols over the Northwest Pacific Ocean in spring
作者: Wu Z.; Hu L.; Guo T.; Lin T.; Guo Z.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 223
语种: 英语
英文关键词: Aerosols ; Deposition ; Gas emissions ; Meteorological problems ; Oceanography ; Organic carbon ; Paraffins ; Ships ; Atmospheric depositions ; Carbonaceous aerosol ; Dry particle deposition ; East Asia ; Liquid vapor pressure ; n-Alkanes ; Pacific ocean ; Secondary organic aerosols ; Atmospheric movements ; alkane ; carbon ; elemental carbon ; organic carbon ; aerosol composition ; air mass ; alkane ; atmospheric deposition ; elemental carbon ; eolian process ; partition coefficient ; research vessel ; vapor pressure ; aerosol ; marine environment ; Pacific Ocean ; priority journal ; spring ; vapor pressure ; East China Sea ; Pacific Ocean ; Pacific Ocean (Northwest)
学科: Carbonaceous aerosols ; East Asia ; n-Alkanes ; Northwest Pacific Ocean
中文摘要: The present study provides insight into the long-range transport of carbonaceous aerosols over the Northwest Pacific Ocean (NWP) based on marine aerosol samples collected onboard a research vessel in the spring of 2015. Organic carbon (OC) and elemental carbon (EC) concentrations showed maxima in proximity to land, with high levels also observed in advective air masses. The decoupled spatial variations in OC and EC levels in relatively pristine air masses from the Pacific, in which aerosol n-alkanes of marine origin were relatively high in abundance, revealed the influence of heterogeneity in air masses and suggested the release of n-alkanes from local marine environments. This was confirmed by the enhanced particle-bound fraction of marine organic matter-sourced n-alkanes, resulting in non-significant relationships between the gas–particle partition coefficient of n-alkanes and the corresponding sub-cooled liquid vapor pressure in some marine air masses. High OC/EC ratios over the NWP indicated secondary organic aerosol formation, possibly as a result of marine emissions followed by gas-to-particle conversion and/or aerosol aging during long-range transport from East Asia. Similar molecular profiles of n-alkanes were found in air and seawater particles in regions dominated by either marine or continental influence, reflecting the strengths of continental and/or marine input and more importantly, suggesting the occurrence of air–sea exchange through wind-induced marine emissions or atmospheric deposition. Relative to the East China Sea, dry particle deposition after long-range transport acted as a more important source for terrestrial lipids in the open NWP. © 2019 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160572
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作者单位: College of Resources and Environment, Shanxi University of Finance and Economics, Taiyuan, 030006, China; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266061, China; Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao, 266061, China; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Institute of Atmospheric Sciences, Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China; College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China

Recommended Citation:
Wu Z.,Hu L.,Guo T.,et al. Aeolian transport and deposition of carbonaceous aerosols over the Northwest Pacific Ocean in spring[J]. Atmospheric Environment,2020-01-01,223
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