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Jang E, Park KT, Yoon YJ, Kim K, Gim Y, Chung HY, Lee K, Choi J, Park J, Park SJ, Koo JH, Fernandez RP, Saiz-Lopez A. First-year sea ice leads to an increase in dimethyl sulfide-induced particle formation in the Antarctic Peninsula. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 803:150002. [PMID: 34482143 DOI: 10.1016/j.scitotenv.2021.150002] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/17/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
Dimethyl sulfide (DMS) produced by marine algae represents the largest natural emission of sulfur to the atmosphere. The oxidation of DMS is a key process affecting new particle formation that contributes to the radiative forcing of the Earth. In this study, atmospheric DMS and its major oxidation products (methanesulfonic acid, MSA; non-sea-salt sulfate, nss-SO42-) and particle size distributions were measured at King Sejong station located in the Antarctic Peninsula during the austral spring-summer period in 2018-2020. The observatory was surrounded by open ocean and first-year and multi-year sea ice. Importantly, oceanic emissions and atmospheric oxidation of DMS showed distinct differences depending on source regions. A high mixing ratio of atmospheric DMS was observed when air masses were influenced by the open ocean and first-year sea ice due to the abundance of DMS producers such as pelagic phaeocystis and ice algae. However, the concentrations of MSA and nss-SO42- were distinctively increased for air masses originating from first-year sea ice as compared to those originating from the open ocean and multi-year sea ice, suggesting additional influences from the source regions of atmospheric oxidants. Heterogeneous chemical processes that actively occur over first-year sea ice tend to accelerate the release of bromine monoxide (BrO), which is the most efficient DMS oxidant in Antarctica. Model-estimates for surface BrO confirmed that high BrO mixing ratios were closely associated with first-year sea ice, thus enhancing DMS oxidation. Consequently, the concentration of newly formed particles originated from first-year sea ice, which was a strong source area for both DMS and BrO was greater than from open ocean (high DMS but low BrO). These results indicate that first-year sea ice plays an important yet overlooked role in DMS-induced new particle formation in polar environments, where warming-induced sea ice changes are pronounced.
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Affiliation(s)
- Eunho Jang
- Korea Polar Research Institute, Incheon, South Korea; University of Science and Technology, Daejeon, South Korea
| | - Ki-Tae Park
- Korea Polar Research Institute, Incheon, South Korea; University of Science and Technology, Daejeon, South Korea.
| | | | - Kitae Kim
- Korea Polar Research Institute, Incheon, South Korea; University of Science and Technology, Daejeon, South Korea
| | - Yeontae Gim
- Korea Polar Research Institute, Incheon, South Korea
| | - Hyun Young Chung
- Korea Polar Research Institute, Incheon, South Korea; University of Science and Technology, Daejeon, South Korea
| | - Kitack Lee
- Department of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang, South Korea
| | - Jinhee Choi
- Korea Polar Research Institute, Incheon, South Korea
| | - Jiyeon Park
- Korea Polar Research Institute, Incheon, South Korea
| | | | - Ja-Ho Koo
- Department of Atmospheric Sciences, Yonsei University, Seoul, South Korea
| | - Rafael P Fernandez
- Institute for Interdisciplinary Science (ICB), National Research Council (CONICET), FCEN-UNCuyo, Mendoza, Argentina
| | - Alfonso Saiz-Lopez
- Department of Atmospheric Chemistry and Climate, Institute of Physical Chemistry Rocasolano, CSIC, Madrid, Spain
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Lin KC, Muthiah B, Chang HP, Kasai T, Chang YP. Halogen-related photodissociation in atmosphere: characterisation of atomic halogen, molecular halogen, and hydrogen halide. INT REV PHYS CHEM 2020. [DOI: 10.1080/0144235x.2020.1822590] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- King-Chuen Lin
- Department of Chemistry, National Taiwan University, Taipei, Taiwan
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, Taiwan
| | | | - Hsiu-Pu Chang
- Department of Chemistry, National Taiwan University, Taipei, Taiwan
| | - Toshio Kasai
- Department of Chemistry, National Taiwan University, Taipei, Taiwan
- Institute of Scientific and Industrial Research, Osaka University, Osaka, Japan
| | - Yuan-Pin Chang
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan
- Aerosol Science Research Center, National Sun Yat-sen University, Kaohsiung, Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan
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Baek YS, Kim K, Saiz-Lopez A, Min DW, Kim B, Choi W, Choi CH. Entangled iodine and hydrogen peroxide formation in ice. Phys Chem Chem Phys 2020; 22:16532-16535. [PMID: 32691035 DOI: 10.1039/d0cp02966a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ice-core records show that anthropogenic pollution has increased the global atmospheric concentrations of hydrogen peroxide and iodine since the mid-20th century. Here, for the first time, we demonstrate a highly efficient mechanism that synergistically produces them in icy water conditions. This reaction is aided by a key intermediate IO2H, formed by an I- ion with a dissolved O2 in acidic icy water, which produces both I as well as O2H radicals. I recombines with I- to produce I2- at a diffusion-limited rate, followed by formation of I3- through disproportionation, while O2H yields H2O2 with I- and a proton dissolved in icy water.
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Affiliation(s)
- Yong Su Baek
- Department of Chemistry and Green-Nano Materials Research Center, College of Natural Sciences, Kyungpook National University, Sangyeok, Bukgu, Daegu 41566, South Korea.
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