Unexpectedly high dimethyl sulfide concentration in high-latitude Arctic sea ice melt ponds SCIE SCOPUS

Cited 8 time in WEB OF SCIENCE Cited 7 time in Scopus
Title
Unexpectedly high dimethyl sulfide concentration in high-latitude Arctic sea ice melt ponds
Author(s)
Park, Keyhong; Kim, Intae; Choi, Jung-Ok; Lee, Youngju; Jung, Jinyoung; Ha, Sun-Yong; Kim, Joo-Hong; Zhang, Miming
KIOST Author(s)
Kim, In Tae(김인태)
Publication Year
2019-10-01
Abstract
Dimethyl sulfide (DMS) production in the northern Arctic Ocean has been considered to be minimal because of high sea ice concentration and extremely low productivity. However, we found DMS concentration (1-33 nM) in melt ponds on sea ice at a very high latitude (78 degrees N) in the central Arctic Ocean to be up to ten times that in the adjacent open ocean (<3 nM). We divided melt ponds into three categories: freshwater melt ponds, brackish melt ponds, and open saline melt ponds. Melt ponds from each category had different formation mechanisms and associated DMS contents. Closed brackish ponds (salinity of >20) had particularly high DMS concentration. Water in brackish ponds was mixed with open ocean water in the past via a hole at the bottom of the floe that kept the pond open to the ocean; therefore, unlike freshwater melt ponds, brackish ponds became sites of DMS accumulation. Our results suggest that continuous increase in melt pond coverage on Arctic sea ice could considerably impact future Arctic climate as well as enhancing DMS concentration in the Arctic atmosphere.
ISSN
2050-7887
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/484
DOI
10.1039/c9em00195f
Bibliographic Citation
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS, v.21, no.10, pp.1642 - 1649, 2019
Publisher
ROYAL SOC CHEMISTRY
Subject
AMUNDSEN SEA; OCEANIC PHYTOPLANKTON; SEASONAL EVOLUTION; DMS; SENSITIVITY; CLIMATE; DISTRIBUTIONS; AEROSOL; SULFUR; ALBEDO
Type
Article
Language
English
Document Type
Article
Publisher
ROYAL SOC CHEMISTRY
Related Researcher
Research Interests

Chemical Oceanography,Environmental Radiochemistry,Environmental Chemistry,화학해양학,환경방사능화학,환경분석화학

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