Characteristics of the horizontal and vertical distributions of dimethyl sulfide throughout the Amundsen Sea Polynya

Kim, Intae; Hahm, Doshik; Park, Keyhong; Lee, Young-Ju; Choi, Jungwon; Zhang, Miming; Chen, Liqi; Kim, Hyuncheol; Lee, Sanghoon

doi:10.1016/j.scitotenv.2017.01.165

Cited by 20 publications

(24 citation statements)

References 29 publications

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“…CC BY 4.0 License. by P. antarctica during the cruise (Kim et al, 2017), which are consistent with previous results observed in the Amundsen Sea (Tortell et al, 2012).…”

Section: Factors Influencing Atmospheric Msa Concentration Over the Asupporting

confidence: 93%

“…This suggests that Chl-a concentration and phytoplankton taxonomic composition are not direct factors determining atmospheric MSA concentration over the Amundsen Sea. On the other hand, DMS flux (data from Kim et al, 2017) averaged for the duration of each aerosol sampling showed a somewhat similar variation trend to that of atmospheric MSA concentration ( Fig. 4a), but the correlation between atmospheric MSA and DMS flux was weak (r = 0.18, p > 0.05, Fig.…”

Section: Factors Influencing Atmospheric Msa Concentration Over the Amentioning

confidence: 63%

“…MSA is produced by atmospheric oxidation of DMS, which is released as a gas phase from marine biological activities and thus can be used as an indicator of secondary aerosols of marine biogenic origin (Miyazaki et al, 2011). As described in section 3.2, Kim et al (2017) observed extremely high DMS concentrations (> Atmos. Chem.…”

Section: Relationships Of Wioc and Wsoc With Na + Over The Southern Omentioning

confidence: 98%

“…The Amundsen Sea, located in the West Antarctica, hosts two coastal polynyas: the Amundsen Sea Polynya (ASP) and Pine Island Bay Polynya (PIBP) (Arrigo and van Dijken, 2003). The ASP is the most productive polynya (per unit area) among 37 identified coastal polynya systems in the Antarctic (Arrigo and van Dijken, 2003) due to the combined effects of the enhanced light condition (Park et al, 2017), the abundance of macronutrients, supply of iron (Fe) from melting sea ice and/or glaciers and continental shelf sediments resulted from the intrusion of relatively warm, salty, and nutrient-rich Circumpolar Deep Water (CDW) (Arrigo et al, 2012;Dutrieux et al, 2014;Sherrell et al, 2015). Consequently, the Amundsen Sea is an ideal place to monitor a direct link between biological production and local emissions of sulfur compounds and organics, not only because of its remoteness from anthropogenic activity but also because it is an area of exceptionally high seasonal primary production.…”

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confidence: 99%

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Characteristics of biogenically-derived aerosols over the Amundsen Sea, Antarctica

Jung¹,

Hong²,

Chen³

et al. 2019

Preprint

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Abstract. To investigate the influence of marine biological activity on aerosols, aerosol and seawater samples were collected over the Southern Ocean (43&#176;&#8201;S&#8722;70&#176;&#8201;S) and the Amundsen Sea (70&#176;&#8201;S&#8722;75&#176;&#8201;S) during the ANA06B cruise conducted in the austral summer of 2016 aboard the Korean icebreaker IBR/V Araon. Over the Southern Ocean, atmospheric methanesulfonic acid (MSA) concentration was low (0.10&#8201;&#177;&#8201;0.002&#8201;&#181;g&#8201;m&#8722;3), whereas its concentration increased sharply up to 0.57&#8201;&#181;g&#8201;m&#8722;3 in the Amundsen Sea where Phaeocystis antarctica (P. antarctica), a producer of dimethylsulfide (DMS), was the dominant phytoplankton species. Unlike MSA, mean non-sea-salt sulfate (nss-SO42&#8722;) concentration in the Amundsen Sea was comparable to that in the Southern Ocean, suggesting significant influences of marine biological activity on atmospheric sulfur species in the Amundsen Sea. Water-soluble organic carbon (WSOC) concentrations over the Southern Ocean and the Amundsen Sea varied from 0.048&#8211;0.16&#8201;&#181;gC&#8201;m&#8722;3 and 0.070&#8211;0.18&#8201;&#181;gC&#8201;m&#8722;3, with averages of 0.087&#8201;&#177;&#8201;0.038&#8201;&#181;gC&#8201;m&#8722;3 and 0.097&#8201;&#177;&#8201;0.038&#8201;&#181;gC&#8201;m&#8722;3, respectively. For water-insoluble organic carbon (WIOC), its mean concentrations over the Southern Ocean and the Amundsen Sea were 0.25&#8201;&#177;&#8201;0.13&#8201;&#181;gC&#8201;m&#8722;3 and 0.26&#8201;&#177;&#8201;0.10&#8201;&#181;gC&#8201;m&#8722;3, varying from 0.083&#8211;0.49&#8201;&#181;gC&#8201;m&#8722;3 and 0.12&#8211;0.38&#8201;&#181;gC&#8201;m&#8722;3, respectively. WIOC was the dominant organic carbon species in both the Southern Ocean and the Amundsen Sea, accounting for 73&#8211;75&#8201;% of total aerosol organic carbon. WSOC and WIOC were highly enriched in the submicron sea spray particles, especially in the Amundsen Sea where biological productivity was much higher than the Southern Ocean. In addition, the submicron WIOC concentration was quite related to the relative biomass of P. antarctica, suggesting that extracellular polysaccharide mucus produced by P. antarctica was a significant factor affecting atmospheric WIOC concentration in the Amundsen Sea. The fluorescence properties of WSOC investigated using fluorescence excitation-emission matrix coupled with parallel factor analysis (EEM-PARAFAC) revealed that protein-like components were dominant in our marine aerosol samples, representing 69&#8211;91&#8201;% of the total intensity. Protein-like components also showed positive relationships with the relative biomass of diatoms; however, they were negatively correlated with the relative biomass of P. antarctica. These results suggest that protein-like components are most likely produced as a result of biological processes of diatoms, which play a crucial role in forming the submicron WSOC observed over the Southern Ocean and the Amundsen Sea, and that phytoplankton community structure is a significant factor affecting atmospheric organic carbon species. The results from this study provide significant new observational data on biogenically-derived sulfur and organic carbon species in the Amundsen Sea.

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“…CC BY 4.0 License. by P. antarctica during the cruise (Kim et al, 2017), which are consistent with previous results observed in the Amundsen Sea (Tortell et al, 2012).…”

Section: Factors Influencing Atmospheric Msa Concentration Over the Asupporting

confidence: 93%

Section: Factors Influencing Atmospheric Msa Concentration Over the Amentioning

confidence: 63%

Section: Relationships Of Wioc and Wsoc With Na + Over The Southern Omentioning

confidence: 98%

mentioning

confidence: 99%

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Characteristics of biogenically-derived aerosols over the Amundsen Sea, Antarctica

Jung¹,

Hong²,

Chen³

et al. 2019

Preprint

Self Cite

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“…The bacterial consumption of DMS results in its loss, meanwhile DMS production by bacteria can be influenced by their need to assimilate sulphur from DMSP (Kiene & Bates 1990;Howard et al 2006;Johnston et al 2008;del Valle et al 2009;Simó et al 2009;Herrmann et al 2012). Although no DMS data were recorded from the waters off the northern tip of Antarctic Peninsula, the data from the other Antarctica areas show that the Southern Ocean is a global hotspot for DMS production (Criscitiello et al 2013;Kim et al 2017;Galí et al 2018;Stefels et al 2018). For example, the concentrations of DMS in the surface water of the Amundsen Sea Polynya and Pine Island Polynya is up to 400 nM (Kim et al 2017).…”

Section: Bacterioplankton Community Structurementioning

confidence: 99%

Diversity and community structure of bacterioplankton in surface waters off the northern tip of the Antarctic Peninsula

Cao

Zhang

et al. 2019

Polar Research

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Global climate change is significantly affecting marine life off the northern tip of the Antarctic Peninsula, but little is known about microbial ecology in this area. The main goal of this study was to investigate the bacterioplankton community structure in surface waters using pyrosequencing and to determine factors influencing this community. Pelagibacterales and Rhodobacterales (Alphaproteobacteria), Oceanospirillales and Alteromonadales (Gammaproteobacteria), and Flavobacteriales (Bacteroidetes) were the core taxa in our samples, and the five most relatively abundant genera were Pelagibacter, Polaribacter, Octadecabacter, group HTCC2207 and Sulfitobacter. Although nutrients and chlorophyll a (chl a) contributed more to bacterioplankton community structure than water masses or depth, only 30.39% of the variance could be explained by the investigated environmental factors, as revealed by RDA and pRDA. No significant difference with respect to nutrients and chl a was observed among water masses or depth, as indicated by ANOVA. Furthermore, significant correlations among the dominant bacterial genera were more common than correlations between dominant genera and environmental factors, as revealed by Spearman analysis. We conclude that nutrients and chl a become homogeneous and that interpopulation interactions may have a central role in influencing the bacterial community structure in surface waters off the northern tip of the Antarctic Peninsula during the summer.

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An integrated sampler for shipboard underway measurement of dimethyl sulfide in surface seawater and air

Zhang

Gao

Yan

et al. 2019

Atmospheric Environment

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Characteristics of the horizontal and vertical distributions of dimethyl sulfide throughout the Amundsen Sea Polynya

Cited by 20 publications

References 29 publications

Characteristics of biogenically-derived aerosols over the Amundsen Sea, Antarctica

Characteristics of biogenically-derived aerosols over the Amundsen Sea, Antarctica

Diversity and community structure of bacterioplankton in surface waters off the northern tip of the Antarctic Peninsula

An integrated sampler for shipboard underway measurement of dimethyl sulfide in surface seawater and air

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