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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ftcopernicus:oai:publications.copernicus.org:acp54562 2023-05-15T13:43:08+02:00 Seasonal variations in physical characteristics of aerosol particles at the King Sejong Station, Antarctic Peninsula Kim, Jaeseok Yoon, Young Jun Gim, Yeontae Kang, Hyo Jin Choi, Jin Hee Park, Ki-Tae Lee, Bang Yong 2018-09-10 application/pdf https://doi.org/10.5194/acp-17-12985-2017 https://www.atmos-chem-phys.net/17/12985/2017/ eng eng doi:10.5194/acp-17-12985-2017 https://www.atmos-chem-phys.net/17/12985/2017/ eISSN: 1680-7324 Text 2018 ftcopernicus https://doi.org/10.5194/acp-17-12985-2017 2019-12-24T09:50:54Z 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. Text Antarc* Antarctic Antarctic Peninsula Copernicus Publications: E-Journals 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 |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
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 |
Text |
author |
Kim, Jaeseok Yoon, Young Jun Gim, Yeontae Kang, Hyo Jin Choi, Jin Hee Park, Ki-Tae Lee, Bang Yong |
spellingShingle |
Kim, Jaeseok Yoon, Young Jun Gim, Yeontae Kang, Hyo Jin Choi, Jin Hee Park, Ki-Tae Lee, Bang Yong Seasonal variations in physical characteristics of aerosol particles at the King Sejong Station, Antarctic Peninsula |
author_facet |
Kim, Jaeseok Yoon, Young Jun Gim, Yeontae Kang, Hyo Jin Choi, Jin Hee Park, Ki-Tae Lee, Bang Yong |
author_sort |
Kim, Jaeseok |
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 |
publishDate |
2018 |
url |
https://doi.org/10.5194/acp-17-12985-2017 https://www.atmos-chem-phys.net/17/12985/2017/ |
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 |
eISSN: 1680-7324 |
op_relation |
doi:10.5194/acp-17-12985-2017 https://www.atmos-chem-phys.net/17/12985/2017/ |
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_ |
1766185113122504704 |