Characteristics of methanesulfonic acid, non-sea-salt sulfate and organic carbon aerosols over the Amundsen Sea, Antarctica

• Published in: Atmospheric Chemistry and Physics
• Main Authors: J. Jung, S.-B. Hong, M. Chen, J. Hur, L. Jiao, Y. Lee, K. Park, D. Hahm, J.-O. Choi, E. J. Yang, J. Park, T.-W. Kim, S. Lee
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2020
• Subjects: Physics; QC1-999; Chemistry; QD1-999; Southern Ocean; Austral; Amundsen Sea; Antarc*; Antarctica
• Online Access: https://doi.org/10.5194/acp-20-5405-2020; https://doaj.org/article/95c21418514343ed88900608085d09a0

To investigate the characteristics of particulate methanesulfonic acid (MSA (p) ), non-sea-salt sulfate (nss <math xmlns="http://www.w3.org/1998/Math/MathML" id="M2" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">SO</mi><mn mathvariant="normal">4</mn><mrow><mn mathvariant="normal">2</mn><mo>-</mo></mrow></msubsup></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="29pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="74b4be02f6bf1e477b176a208786a61b"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="acp-20-5405-2020-ie00001.svg" width="29pt" height="17pt" src="acp-20-5405-2020-ie00001.png"/></svg:svg> ) and organic carbon (OC) aerosols, aerosol and seawater samples were collected over the Southern Ocean (43–70 ∘ S) and the Amundsen Sea (70–75 ∘ S) during the ANA06B cruise conducted in the austral summer of 2016 aboard the Korean icebreaker IBR/V Araon . Over the Southern Ocean, the atmospheric MSA (p) concentration was low ( 0.10±0.002 µ g m −3 ), whereas its concentration increased sharply up to 0.57 µ g m −3 in the Amundsen Sea where Phaeocystis antarctica ( P. antarctica ), a producer of dimethylsulfide (DMS), was the dominant phytoplankton species. Unlike MSA (p) , the mean nss <math xmlns="http://www.w3.org/1998/Math/MathML" id="M12" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">SO</mi><mn mathvariant="normal">4</mn><mrow><mn mathvariant="normal">2</mn><mo>-</mo></mrow></msubsup></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="29pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="97cb19aa5ca8b26a6d7fd7d4bad307d2"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" ...