Seasonal variations in physical characteristics of aerosol particles at the King Sejong Station, Antarctic Peninsula
Seasonal variability in the physical characteristics of aerosol particles sampled from the King Sejong Station in the Antarctic Peninsula was investigated over the period between March 2009 and February 2015. Clear seasonal cycles for the total particle concentration (CN) were observed. The mean mon...
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ftdoajarticles:oai:doaj.org/article:484f35e50c8f42d0b2b83ff2527db5c6 2023-05-15T13:38:04+02:00 Seasonal variations in physical characteristics of aerosol particles at the King Sejong Station, Antarctic Peninsula J. Kim Y. J. Yoon Y. Gim H. J. Kang J. H. Choi K.-T. Park B. Y. Lee 2017-11-01T00:00:00Z https://doi.org/10.5194/acp-17-12985-2017 https://doaj.org/article/484f35e50c8f42d0b2b83ff2527db5c6 EN eng Copernicus Publications https://www.atmos-chem-phys.net/17/12985/2017/acp-17-12985-2017.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-17-12985-2017 1680-7316 1680-7324 https://doaj.org/article/484f35e50c8f42d0b2b83ff2527db5c6 Atmospheric Chemistry and Physics, Vol 17, Pp 12985-12999 (2017) Physics QC1-999 Chemistry QD1-999 article 2017 ftdoajarticles https://doi.org/10.5194/acp-17-12985-2017 2022-12-31T12:27:54Z Seasonal variability in the physical characteristics of aerosol particles sampled from the King Sejong Station in the Antarctic Peninsula was investigated over the period between March 2009 and February 2015. Clear seasonal cycles for the total particle concentration (CN) were observed. The mean monthly concentration of particles larger than 2.5 nm (CN 2.5 ) was highest during the austral summer, with an average value of 1080.39 ± 595.05 cm −3 , and lowest during the austral winter, with a mean value of 197.26 ± 71.71 cm −3 . The seasonal patterns in the concentrations of cloud condensation nuclei (CCN) and CN coincide, with both concentrations being at a minimum in winter and maximum in summer. The measured CCN spectra were approximated by fitting a power-law function relating the number of CCN for a given supersaturation (SS) to each SS value, with fitting coefficients C and k T . The values for C varied from 6.35 to 837.24 cm −3 , with a mean of 171.48 ± 62.00 cm −3 . The values for k T ranged from 0.07 to 2.19, with a mean of 0.41 ± 0.10. In particular, the k T values during the austral summer were higher than those during the winter, indicating that aerosol particles are more sensitive to SS changes during summer. Furthermore, the annual mean hygroscopicity parameter, κ , was estimated as 0.15 ± 0.05, for a SS of 0.4 %. The effects of the origin and pathway travelled by the air mass on the physical characteristics of the aerosol particles were also determined. The modal diameter of aerosol particles originating in the South Pacific Ocean showed a seasonal variation varying from 0.023 µm in winter to 0.034 µm in summer for the Aitken mode, and from 0.086 µm in winter to 0.109 µm in summer for the accumulation mode. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Directory of Open Access Journals: DOAJ Articles Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) Antarctic Antarctic Peninsula Austral King Sejong Station ENVELOPE(-58.783,-58.783,-62.220,-62.220) Pacific The Antarctic Atmospheric Chemistry and Physics 17 21 12985 12999 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 J. Kim Y. J. Yoon Y. Gim H. J. Kang J. H. Choi K.-T. Park B. Y. Lee Seasonal variations in physical characteristics of aerosol particles at the King Sejong Station, Antarctic Peninsula |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Seasonal variability in the physical characteristics of aerosol particles sampled from the King Sejong Station in the Antarctic Peninsula was investigated over the period between March 2009 and February 2015. Clear seasonal cycles for the total particle concentration (CN) were observed. The mean monthly concentration of particles larger than 2.5 nm (CN 2.5 ) was highest during the austral summer, with an average value of 1080.39 ± 595.05 cm −3 , and lowest during the austral winter, with a mean value of 197.26 ± 71.71 cm −3 . The seasonal patterns in the concentrations of cloud condensation nuclei (CCN) and CN coincide, with both concentrations being at a minimum in winter and maximum in summer. The measured CCN spectra were approximated by fitting a power-law function relating the number of CCN for a given supersaturation (SS) to each SS value, with fitting coefficients C and k T . The values for C varied from 6.35 to 837.24 cm −3 , with a mean of 171.48 ± 62.00 cm −3 . The values for k T ranged from 0.07 to 2.19, with a mean of 0.41 ± 0.10. In particular, the k T values during the austral summer were higher than those during the winter, indicating that aerosol particles are more sensitive to SS changes during summer. Furthermore, the annual mean hygroscopicity parameter, κ , was estimated as 0.15 ± 0.05, for a SS of 0.4 %. The effects of the origin and pathway travelled by the air mass on the physical characteristics of the aerosol particles were also determined. The modal diameter of aerosol particles originating in the South Pacific Ocean showed a seasonal variation varying from 0.023 µm in winter to 0.034 µm in summer for the Aitken mode, and from 0.086 µm in winter to 0.109 µm in summer for the accumulation mode. |
format |
Article in Journal/Newspaper |
author |
J. Kim Y. J. Yoon Y. Gim H. J. Kang J. H. Choi K.-T. Park B. Y. Lee |
author_facet |
J. Kim Y. J. Yoon Y. Gim H. J. Kang J. H. Choi K.-T. Park B. Y. Lee |
author_sort |
J. Kim |
title |
Seasonal variations in physical characteristics of aerosol particles at the King Sejong Station, Antarctic Peninsula |
title_short |
Seasonal variations in physical characteristics of aerosol particles at the King Sejong Station, Antarctic Peninsula |
title_full |
Seasonal variations in physical characteristics of aerosol particles at the King Sejong Station, Antarctic Peninsula |
title_fullStr |
Seasonal variations in physical characteristics of aerosol particles at the King Sejong Station, Antarctic Peninsula |
title_full_unstemmed |
Seasonal variations in physical characteristics of aerosol particles at the King Sejong Station, Antarctic Peninsula |
title_sort |
seasonal variations in physical characteristics of aerosol particles at the king sejong station, antarctic peninsula |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/acp-17-12985-2017 https://doaj.org/article/484f35e50c8f42d0b2b83ff2527db5c6 |
long_lat |
ENVELOPE(-44.516,-44.516,-60.733,-60.733) ENVELOPE(-58.783,-58.783,-62.220,-62.220) |
geographic |
Aitken Antarctic Antarctic Peninsula Austral King Sejong Station Pacific The Antarctic |
geographic_facet |
Aitken Antarctic Antarctic Peninsula Austral King Sejong Station Pacific The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_source |
Atmospheric Chemistry and Physics, Vol 17, Pp 12985-12999 (2017) |
op_relation |
https://www.atmos-chem-phys.net/17/12985/2017/acp-17-12985-2017.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-17-12985-2017 1680-7316 1680-7324 https://doaj.org/article/484f35e50c8f42d0b2b83ff2527db5c6 |
op_doi |
https://doi.org/10.5194/acp-17-12985-2017 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
17 |
container_issue |
21 |
container_start_page |
12985 |
op_container_end_page |
12999 |
_version_ |
1766101094720602112 |