Tethered balloon-borne aerosol measurements: seasonal and vertical variations of aerosol constituents over Syowa Station, Antarctica
Tethered balloon-borne aerosol measurements were conducted at Syowa Station, Antarctica, during the 46th Japanese Antarctic expedition (2005–2006). Direct aerosol sampling was operated from near the surface to the lower free troposphere (approximately 2500 m) using a balloon-borne aerosol impactor....
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ftdoajarticles:oai:doaj.org/article:c86f2c0e5350479e91f08c0e4670dd42 2023-05-15T13:44:22+02:00 Tethered balloon-borne aerosol measurements: seasonal and vertical variations of aerosol constituents over Syowa Station, Antarctica K. Hara K. Osada T. Yamanouchi 2013-09-01T00:00:00Z https://doi.org/10.5194/acp-13-9119-2013 https://doaj.org/article/c86f2c0e5350479e91f08c0e4670dd42 EN eng Copernicus Publications http://www.atmos-chem-phys.net/13/9119/2013/acp-13-9119-2013.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-13-9119-2013 1680-7316 1680-7324 https://doaj.org/article/c86f2c0e5350479e91f08c0e4670dd42 Atmospheric Chemistry and Physics, Vol 13, Iss 17, Pp 9119-9139 (2013) Physics QC1-999 Chemistry QD1-999 article 2013 ftdoajarticles https://doi.org/10.5194/acp-13-9119-2013 2022-12-31T11:40:50Z Tethered balloon-borne aerosol measurements were conducted at Syowa Station, Antarctica, during the 46th Japanese Antarctic expedition (2005–2006). Direct aerosol sampling was operated from near the surface to the lower free troposphere (approximately 2500 m) using a balloon-borne aerosol impactor. Individual aerosol particles were analyzed using a scanning electron microscope equipped with an energy dispersive X-ray spectrometer. Seasonal and vertical features of aerosol constituents and their mixing states were investigated. Results show that sulfate particles were predominant in the boundary layer and lower free troposphere in summer, whereas sea-salt particles were predominant during winter through spring. Minerals, MgSO 4 , and sulfate containing K were identified as minor aerosol constituents in both boundary layer and free troposphere over Syowa Station. Although sea-salt particles were predominant during winter through spring, the relative abundance of sulfate particles increased in the boundary layer when air masses fell from the free troposphere over the Antarctic coast and continent. Sea-salt particles were modified considerably through heterogeneous reactions with SO 4 2− CH 3 SO 3 − and their precursors during summer, and were modified slightly through heterogeneous reactions with NO 3 − and its precursors. During winter through spring, sea-salt modification was insignificant, particularly in the cases of high relative abundance of sea-salt particles and higher number concentrations. In August, NO 3 − and its precursors contributed greatly to sea-salt modification over Syowa Station. Because of the occurrence of sea-salt fractionation on sea ice, Mg-rich sea-salt particles were identified during the months of April through November. In contrast, Mg-free sea-salt particles and slightly Mg-rich sea-salt particles coexisted in the lower troposphere during summer. Thereby, Mg separation can proceed by sea-salt fractionation during summer in Antarctic regions. Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Syowa Station Atmospheric Chemistry and Physics 13 17 9119 9139 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 K. Hara K. Osada T. Yamanouchi Tethered balloon-borne aerosol measurements: seasonal and vertical variations of aerosol constituents over Syowa Station, Antarctica |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Tethered balloon-borne aerosol measurements were conducted at Syowa Station, Antarctica, during the 46th Japanese Antarctic expedition (2005–2006). Direct aerosol sampling was operated from near the surface to the lower free troposphere (approximately 2500 m) using a balloon-borne aerosol impactor. Individual aerosol particles were analyzed using a scanning electron microscope equipped with an energy dispersive X-ray spectrometer. Seasonal and vertical features of aerosol constituents and their mixing states were investigated. Results show that sulfate particles were predominant in the boundary layer and lower free troposphere in summer, whereas sea-salt particles were predominant during winter through spring. Minerals, MgSO 4 , and sulfate containing K were identified as minor aerosol constituents in both boundary layer and free troposphere over Syowa Station. Although sea-salt particles were predominant during winter through spring, the relative abundance of sulfate particles increased in the boundary layer when air masses fell from the free troposphere over the Antarctic coast and continent. Sea-salt particles were modified considerably through heterogeneous reactions with SO 4 2− CH 3 SO 3 − and their precursors during summer, and were modified slightly through heterogeneous reactions with NO 3 − and its precursors. During winter through spring, sea-salt modification was insignificant, particularly in the cases of high relative abundance of sea-salt particles and higher number concentrations. In August, NO 3 − and its precursors contributed greatly to sea-salt modification over Syowa Station. Because of the occurrence of sea-salt fractionation on sea ice, Mg-rich sea-salt particles were identified during the months of April through November. In contrast, Mg-free sea-salt particles and slightly Mg-rich sea-salt particles coexisted in the lower troposphere during summer. Thereby, Mg separation can proceed by sea-salt fractionation during summer in Antarctic regions. |
format |
Article in Journal/Newspaper |
author |
K. Hara K. Osada T. Yamanouchi |
author_facet |
K. Hara K. Osada T. Yamanouchi |
author_sort |
K. Hara |
title |
Tethered balloon-borne aerosol measurements: seasonal and vertical variations of aerosol constituents over Syowa Station, Antarctica |
title_short |
Tethered balloon-borne aerosol measurements: seasonal and vertical variations of aerosol constituents over Syowa Station, Antarctica |
title_full |
Tethered balloon-borne aerosol measurements: seasonal and vertical variations of aerosol constituents over Syowa Station, Antarctica |
title_fullStr |
Tethered balloon-borne aerosol measurements: seasonal and vertical variations of aerosol constituents over Syowa Station, Antarctica |
title_full_unstemmed |
Tethered balloon-borne aerosol measurements: seasonal and vertical variations of aerosol constituents over Syowa Station, Antarctica |
title_sort |
tethered balloon-borne aerosol measurements: seasonal and vertical variations of aerosol constituents over syowa station, antarctica |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/acp-13-9119-2013 https://doaj.org/article/c86f2c0e5350479e91f08c0e4670dd42 |
geographic |
Antarctic The Antarctic Syowa Station |
geographic_facet |
Antarctic The Antarctic Syowa Station |
genre |
Antarc* Antarctic Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Sea ice |
op_source |
Atmospheric Chemistry and Physics, Vol 13, Iss 17, Pp 9119-9139 (2013) |
op_relation |
http://www.atmos-chem-phys.net/13/9119/2013/acp-13-9119-2013.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-13-9119-2013 1680-7316 1680-7324 https://doaj.org/article/c86f2c0e5350479e91f08c0e4670dd42 |
op_doi |
https://doi.org/10.5194/acp-13-9119-2013 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
13 |
container_issue |
17 |
container_start_page |
9119 |
op_container_end_page |
9139 |
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1766200988535881728 |