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Atmospheric dimethyl sulfide and its significant influence on the sea-to-air flux calculation over the Southern Ocean

Cited 3 time in wos
Cited 4 time in scopus
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Title
Atmospheric dimethyl sulfide and its significant influence on the sea-to-air flux calculation over the Southern Ocean
Other Titles
남극해의 해양-대기 교환율 추산에서의 대기 DMS의 상당한 영향력
Authors
Zhang, Miming
Park, Ki-Tae
Yan, Jinpei
Park, Keyhong
Wu, Yanfang
Jang, Eunho
Gao, Wei
Tan, Guobin
Wang, Jianjun
Chen, Liqi
Subject
Oceanography
Keywords
Dimethyl sulfide; Southern Ocean; Atmospheric DMS; Seawater DMS; DMS sea-to-air flux
Issue Date
2020-07
Citation
Zhang, Miming, et al. 2020. "Atmospheric dimethyl sulfide and its significant influence on the sea-to-air flux calculation over the Southern Ocean". PROGRESS IN OCEANOGRAPHY, 186(1): 102392-102392.
Abstract
Our understanding about the atmospheric dimethyl sulfide (DMS) and its influence to sea-to-air flux calculation in the Southern Ocean is still limited due to insufficient investigations. Herein, high-resolution shipboard underway simultaneous surface seawater and atmospheric DMS measurements were conducted in the Southern Ocean from February 23 to March 31, 2018. A larger variation of DMS levels was found in atmosphere compared with that in seawater. Remarkably, a large-scale area with high seawater and atmospheric DMS concentrations up to 27.9 nM and 3.92 ppbv, respectively, was investigated outside of Ross Sea sector. Atmospheric DMS levels were strongly impacted by wind speed and air mass convection. The relationship between atmospheric DMS and air mass exposure to oceanic chlorophyll varied greatly depending on the area of investigation. Some other regions with high DMS production capacity were examined as well beside those along the cruise tracks based on the results of positive correlations with high slopes and back trajectories. Moreover, significant uncertainty of sea-to-air DMS flux over the Southern Ocean could be caused by follows: (1) the selecting of different gas transfer coefficients; (2) the negative flux values calculated under high atmospheric DMS levels together with low seawater DMS concentrations; and (3) the greatly overestimated flux, approximately 47.1-76.9%, without considering the atmospheric DMS. This study highlights the urgent demand of high-resolution observations of atmospheric DMS over the Southern Ocean to estimate DMS emission with high accuracy.
URI
https://repository.kopri.re.kr/handle/201206/11945
DOI
http://dx.doi.org/10.1016/j.pocean.2020.102392
Appears in Collections  
2020-2020, Variability of carbon pump and climate control in the Southern Ocean (20-20) / Park, Jisoo (PE20140)
2020-2020, Investigation on formation and growth of aerosols and its climate feedback roles in Antarctic atmosphere (20-20) / Park, Ki-Tae (PE20060)
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