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Emerging investigator series: influence of marine emissions and atmospheric processing on individual particle composition of summertime Arctic aerosol over the Bering Strait and Chukchi Sea†

Cited 3 time in wos
Cited 3 time in scopus
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Title
Emerging investigator series: influence of marine emissions and atmospheric processing on individual particle composition of summertime Arctic aerosol over the Bering Strait and Chukchi Sea†
Other Titles
베링해협과 척치해의 여름철 북극 에어로졸 단일입자의 구성성분에 해양의 배출과 대기의 과정이 미치는 영향
Authors
Kirpes, Rachel M.
Rodriguez, Blanca
Kim, Saewung
China, Swarup
Laskin, Alexander
Park, Keyhong
Jung, Jinyoung
Ault, Andrew P.
Pratt, Kerri A.
Subject
Chemistry; Environmental Sciences & Ecology
Keywords
Arctic; Marine Aerosol; atmospheric chemistry; sulfate; summer
Issue Date
2020-05
Citation
Kirpes, Rachel M., et al. 2020. "Emerging investigator series: influence of marine emissions and atmospheric processing on individual particle composition of summertime Arctic aerosol over the Bering Strait and Chukchi Sea†". ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS, 22(5): 1201-1213.
Abstract
The Arctic is rapidly transforming due to sea ice loss, increasing shipping activity, and oil and gas development. Associated marine and combustion emissions influence atmospheric aerosol composition, impacting complex aerosol-cloud-climate feedbacks. To improve understanding of the sources and processes determining Arctic aerosol composition, atmospheric particles were collected aboard the Korean icebreaker R/V Araon cruising within the Bering Strait and Chukchi Sea during August 2016. Offline analyses of individual particles by microspectroscopic techniques, including scanning electron microscopy with energy dispersive X-ray spectroscopy and atomic force microscopy with infrared spectroscopy, provided information on particle size, morphology, and chemical composition. The most commonly observed particle types were sea spray aerosol (SSA), comprising ~ 60 90 %, by number, of supermicron particles, and organic aerosol (OA), comprising ~50 90 %, by number, of submicron particles. Sulfate and nitrate were internally mixed within both SSA and OA particles, consistent with particle multiphase reactions during atmospheric transport. Within the Bering Strait, SSA and OA particles were more aged, with greater number fractions of particles containing sulfate and/or nitrate, compared to particles collected over the Chukchi Sea. This is indicative of greater pollution influence within the Bering Strait from coastal and inland sources, while the Chukchi Sea is primarily influenced by marine sources.
URI
https://repository.kopri.re.kr/handle/201206/12090
DOI
http://dx.doi.org/10.1039/C9EM00495E
Appears in Collections  
2019-2020, Korea-Arctic Ocean Observing System(K-AOOS) (19-20) / Kang, Sung-Ho (PM19040)
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