First High-Frequency Underway Observation of DMS Distribution in the Southern Ocean during Austral Autumn SCIE SCOPUS

Cited 1 time in WEB OF SCIENCE Cited 2 time in Scopus
Title
First High-Frequency Underway Observation of DMS Distribution in the Southern Ocean during Austral Autumn
Author(s)
Kim, Intae; Zhang, Miming; Kim, Kitae; Park, Keyhong
KIOST Author(s)
Kim, Intae(김인태)
Alternative Author(s)
김인태
Publication Year
2021-01
Abstract
We investigate the distribution of dimethyl sulfide (DMS) in the Southern Ocean's (50 degrees W to 170 degrees W) surface water, including the Antarctic Peninsula and the marginal sea ice zone (MIZ) in the Ross and Amundsen Seas. This is the first high-frequency observation conducted in the austral autumn (in April) in the Southern Ocean. The mean DMS concentration was 2.7 +/- 2.5 nM (1 sigma) for the entire study area. Noticeably enhanced DMS (5 to 28 nM) concentrations were observed in the MIZ around the Ross and Amundsen Seas and the coastal regions in the Antarctic Peninsula; this could be attributed to biological production of local ice algae, which appears to be supplied with nutrients from glacial or sea ice melt water. These observed DMS inventories were significantly higher (an order of magnitude) than current climatological DMS inventories. The local DMS sources being transported outward from the polynyas, where strong bloom occurs during summer, could result in larger discrepancies between observed DMS and climatological DMS in the MIZ area (in the Amundsen Sea). Overall, this study is the first to highlight the significance of the underestimation of current DMS fluxes in the austral autumn, which consequently results in significant errors in the climate models.
ISSN
2073-4433
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/39524
DOI
10.3390/atmos12010122
Bibliographic Citation
ATMOSPHERE, v.12, no.1, pp.1 - 10, 2021
Publisher
MDPI
Subject
Climate models; Sea ice; Sulfur compounds; Antarctic Peninsula; Biological production; Coastal regions; Dimethyl sulfide; High frequency HF; Ice-melt water; Marginal seas; Southern ocean; Surface waters
Keywords
dimethyl sulfide; Southern Ocean; austral autumn; climate; high-frequency underway observation
Type
Article
Language
English
Document Type
Article
Publisher
MDPI
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