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Arctic ship-based evidence of new particle formation events in the Chukchi and East Siberian Seas

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Title
Arctic ship-based evidence of new particle formation events in the Chukchi and East Siberian Seas
Other Titles
북극 항해 기간 중 척치와 시베리안 바다에서 이차적으로 생성된 에어로졸 형성 발견
Authors
Dall’Osto, M.
Park, J.
Kim, Joo-Hong
Kang, Sung-Ho
Park, Kihong
Beddows, D.C.S.
Harrison, Roy M.
Yoon, Young Jun
Subject
Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
Keywords
Arctic; NPF; New particle formation; Open ocean; SMPS; Sea ice
Issue Date
2020-02
Citation
M. Dall’Osto, et al. 2020. "Arctic ship-based evidence of new particle formation events in the Chukchi and East Siberian Seas". ATMOSPHERIC ENVIRONMENT, 223(1): 117232-0.
Abstract
Arctic aerosol-climate interactions are controlled by multiple factors including sources, processes and removal mechanisms of particles. The Arctic is mostly ocean, surrounded by mostly land, and our understanding of Arctic aerosol processes is incomplete due to scarce measurements carried out in sea ice regions. In particular, it is currently not known if these particular regions are sources of aerosols of primary or secondary origin. We present new results from ship-based measurements illustrating that marine new particle production and growth events occur in open ocean and melting sea ice regions in the Chukchi and East Siberian Seas. We report two new particle formation events during which a recently formed nucleation mode (<15 nm diameter) is detected and is observed to slowly grow into an Aitken mode (0.1-3.8 nm/h). Our results suggest that new particle formation occurs in the marine boundary layer contributing to the Arctic aerosol population in the study region for the first time studied and herein reported.
URI
https://repository.kopri.re.kr/handle/201206/10500
DOI
http://dx.doi.org/10.1016/j.atmosenv.2019.117232
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