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Influence on the conversion of DMS to MSA and SO42? in the Southern Ocean, Antarctica

Cited 2 time in wos
Cited 2 time in scopus
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Title
Influence on the conversion of DMS to MSA and SO42? in the Southern Ocean, Antarctica
Other Titles
남빙양에서의 디메틸설파이드의 메탄술폰산과 황산염으로의 전환의 영향
Authors
Yan, Jinpei
Zhang, Miming
Jung, Jinyoung
Lin, Qi
Zhao, Shuhui
Xu, Suqing
Chen, Liqi
Subject
Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
Keywords
Dimethyl sulfide (DMS); Methane sulfonic acid (MSA); nss-SO42-; Aerosol; Antarctica
Issue Date
2020-07
Citation
Yan, Jinpei, et al. 2020. "Influence on the conversion of DMS to MSA and SO42? in the Southern Ocean, Antarctica". ATMOSPHERIC ENVIRONMENT, 233(1): 117611-117619.
Abstract
Dimethyl sulfide (DMS), methanesulphonic acid (MSA) and sulfate (SO42-) were measured simultaneously at high-time resolution in the Southern Ocean (SO) during February and March 2018, to characterize the conversion of DMS to MSA and SO42- in the marine atmosphere. DMS concentrations ranged up to similar to 10890.5 ng m(-3) (with an average of 899.8. 957.9 ng m(-3), representing the standard deviation), which were much higher than the MSA concentrations (with an average of 30.6. 16.8 ng m 3) and SO42- concentration (148.1. 32.5 ng m(-3)) in the aerosol phase. The spatial distribution of MSA was different from the distribution of DMS. The ratio of MSA to DMS (RM) ranged up to similar to 0.31, with an average of 0.044. 0.045. RM value decreased dramatically as DMS concentration increased, when DMS concentration was below 1000 ng m(-3). The effects of temperature and relative humidity (RH) on RM were mostly negligible, indicating that neither DMS concentration, nor RH and temperature was the key parameter for the conversion of DMS to MSA in the SO. Ratios of nss-SO42- to DMS (R-S) were used to estimate the conversion of DMS to SOv. The calculated RS with mean Rp (the ratio of MSA to nss-SOv) value correlated well with the observed RS, which provided an useful method to estimate the biogenic SO42- from the oxidation of DMS in the marine atmosphere, as biogenic SO42- levels can be calculated with Rs and DMS concentrations. The estimated biogenic SO42- levels ranged up to 163.8 ng m(-3), with an average of 47.1 +/- 30.2 ng m 3 in the SO during the cruise. The results extend the knowledge of the conversion of DMS to MSA and SO42- in the marine atmosphere.
URI
https://repository.kopri.re.kr/handle/201206/11812
DOI
http://dx.doi.org/10.1016/j.atmosenv.2020.117611
Appears in Collections  
2020-2020, Variability of carbon pump and climate control in the Southern Ocean (20-20) / Park, Jisoo (PE20140)
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