Shipborne observations reveal contrasting Arctic marine, Arctic terrestrial and Pacific marine aerosol properties
<p>There are few shipborne observations addressing the factors influencing the relationships of the formation and growth of aerosol particles with cloud condensation nuclei (CCN) in remote marine environments. In this study, the physical properties of aerosol particles throughout the Arctic Oc...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2020-05-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://www.atmos-chem-phys.net/20/5573/2020/acp-20-5573-2020.pdf |
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doaj-febb56e6f5a24d28b21630c2716a5050 |
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| record_format |
Article |
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DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
J. Park M. Dall'Osto K. Park Y. Gim H. J. Kang H. J. Kang E. Jang E. Jang K.-T. Park M. Park S. S. Yum J. Jung B. Y. Lee Y. J. Yoon |
| spellingShingle |
J. Park M. Dall'Osto K. Park Y. Gim H. J. Kang H. J. Kang E. Jang E. Jang K.-T. Park M. Park S. S. Yum J. Jung B. Y. Lee Y. J. Yoon Shipborne observations reveal contrasting Arctic marine, Arctic terrestrial and Pacific marine aerosol properties Atmospheric Chemistry and Physics |
| author_facet |
J. Park M. Dall'Osto K. Park Y. Gim H. J. Kang H. J. Kang E. Jang E. Jang K.-T. Park M. Park S. S. Yum J. Jung B. Y. Lee Y. J. Yoon |
| author_sort |
J. Park |
| title |
Shipborne observations reveal contrasting Arctic marine, Arctic terrestrial and Pacific marine aerosol properties |
| title_short |
Shipborne observations reveal contrasting Arctic marine, Arctic terrestrial and Pacific marine aerosol properties |
| title_full |
Shipborne observations reveal contrasting Arctic marine, Arctic terrestrial and Pacific marine aerosol properties |
| title_fullStr |
Shipborne observations reveal contrasting Arctic marine, Arctic terrestrial and Pacific marine aerosol properties |
| title_full_unstemmed |
Shipborne observations reveal contrasting Arctic marine, Arctic terrestrial and Pacific marine aerosol properties |
| title_sort |
shipborne observations reveal contrasting arctic marine, arctic terrestrial and pacific marine aerosol properties |
| publisher |
Copernicus Publications |
| series |
Atmospheric Chemistry and Physics |
| issn |
1680-7316 1680-7324 |
| publishDate |
2020-05-01 |
| description |
<p>There are few shipborne observations addressing the factors influencing the
relationships of the formation and growth of aerosol particles with cloud
condensation nuclei (CCN) in remote marine environments. In this study, the
physical properties of aerosol particles throughout the Arctic Ocean and
Pacific Ocean were measured aboard the Korean icebreaker R/V <i>Araon</i> during
the summer of 2017 for 25 d. A number of new particle formation (NPF)
events and growth were frequently observed in both Arctic terrestrial and
Arctic marine air masses. By striking contrast, NPF events were not detected
in Pacific marine air masses. Three major aerosol categories are therefore
discussed: (1) Arctic marine (aerosol number concentration CN<span class="inline-formula"><sub>2.5</sub></span>: <span class="inline-formula">413±442</span> cm<span class="inline-formula"><sup>−3</sup></span>), (2) Arctic terrestrial (CN<span class="inline-formula"><sub>2.5</sub></span>: <span class="inline-formula">1622±1450</span> cm<span class="inline-formula"><sup>−3</sup></span>) and (3) Pacific marine (CN<span class="inline-formula"><sub>2.5</sub></span>: <span class="inline-formula">397±185</span> cm<span class="inline-formula"><sup>−3</sup></span>), following air mass back-trajectory analysis. A major conclusion
of this study is not only that the Arctic Ocean is a major source of
secondary aerosol formation relative to the Pacific Ocean but also that
open-ocean sympagic and terrestrially influenced coastal ecosystems both
contribute to shaping aerosol size distributions. We suggest that terrestrial
ecosystems – including river outflows and tundra – strongly affect aerosol
emissions in the Arctic coastal areas, possibly more than anthropogenic
Arctic emissions. The increased river discharge, tundra emissions and
melting sea ice should be considered in future Arctic atmospheric
composition and climate simulations. The average CCN concentrations at a
supersaturation ratios of 0.4 % were <span class="inline-formula">35±40</span> cm<span class="inline-formula"><sup>−3</sup></span>, <span class="inline-formula">71±47</span> cm<span class="inline-formula"><sup>−3</sup></span> and <span class="inline-formula">204±87</span> cm<span class="inline-formula"><sup>−3</sup></span> for Arctic marine, Arctic
terrestrial and Pacific marine aerosol categories, respectively. Our
results aim to help evaluate how anthropogenic and natural atmospheric
sources and processes affect the aerosol composition and cloud properties.</p> |
| url |
https://www.atmos-chem-phys.net/20/5573/2020/acp-20-5573-2020.pdf |
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doaj-febb56e6f5a24d28b21630c2716a50502020-11-25T02:20:54ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242020-05-01205573559010.5194/acp-20-5573-2020Shipborne observations reveal contrasting Arctic marine, Arctic terrestrial and Pacific marine aerosol propertiesJ. Park0M. Dall'Osto1K. Park2Y. Gim3H. J. Kang4H. J. Kang5E. Jang6E. Jang7K.-T. Park8M. Park9S. S. Yum10J. Jung11B. Y. Lee12Y. J. Yoon13Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, South KoreaInstitut de Ciències del Mar, CSIC, Pg. Marítim de la Barceloneta 37-49, 08003, Barcelona, Catalonia, SpainSchool of Earth Science and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, South KoreaKorea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, South KoreaKorea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, South KoreaUniversity of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113, South KoreaKorea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, South KoreaUniversity of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113, South KoreaKorea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, South KoreaDepartment of Atmospheric Sciences, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, South KoreaDepartment of Atmospheric Sciences, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, South KoreaKorea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, South KoreaKorea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, South KoreaKorea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, South Korea<p>There are few shipborne observations addressing the factors influencing the relationships of the formation and growth of aerosol particles with cloud condensation nuclei (CCN) in remote marine environments. In this study, the physical properties of aerosol particles throughout the Arctic Ocean and Pacific Ocean were measured aboard the Korean icebreaker R/V <i>Araon</i> during the summer of 2017 for 25 d. A number of new particle formation (NPF) events and growth were frequently observed in both Arctic terrestrial and Arctic marine air masses. By striking contrast, NPF events were not detected in Pacific marine air masses. Three major aerosol categories are therefore discussed: (1) Arctic marine (aerosol number concentration CN<span class="inline-formula"><sub>2.5</sub></span>: <span class="inline-formula">413±442</span> cm<span class="inline-formula"><sup>−3</sup></span>), (2) Arctic terrestrial (CN<span class="inline-formula"><sub>2.5</sub></span>: <span class="inline-formula">1622±1450</span> cm<span class="inline-formula"><sup>−3</sup></span>) and (3) Pacific marine (CN<span class="inline-formula"><sub>2.5</sub></span>: <span class="inline-formula">397±185</span> cm<span class="inline-formula"><sup>−3</sup></span>), following air mass back-trajectory analysis. A major conclusion of this study is not only that the Arctic Ocean is a major source of secondary aerosol formation relative to the Pacific Ocean but also that open-ocean sympagic and terrestrially influenced coastal ecosystems both contribute to shaping aerosol size distributions. We suggest that terrestrial ecosystems – including river outflows and tundra – strongly affect aerosol emissions in the Arctic coastal areas, possibly more than anthropogenic Arctic emissions. The increased river discharge, tundra emissions and melting sea ice should be considered in future Arctic atmospheric composition and climate simulations. The average CCN concentrations at a supersaturation ratios of 0.4 % were <span class="inline-formula">35±40</span> cm<span class="inline-formula"><sup>−3</sup></span>, <span class="inline-formula">71±47</span> cm<span class="inline-formula"><sup>−3</sup></span> and <span class="inline-formula">204±87</span> cm<span class="inline-formula"><sup>−3</sup></span> for Arctic marine, Arctic terrestrial and Pacific marine aerosol categories, respectively. Our results aim to help evaluate how anthropogenic and natural atmospheric sources and processes affect the aerosol composition and cloud properties.</p>https://www.atmos-chem-phys.net/20/5573/2020/acp-20-5573-2020.pdf |