Spatial distributions and mixing states of aerosol particles in the summer Antarctic troposphere
Airplane-borne atmospheric measurements (ANTSYO-II: AGAMES) were carried out in the Antarctic regions in December 2006-January 2007. Aerosol measurements and direct aerosol sampling were done around Neumayer, Kohnen, and S17 (close to Syowa Station). Aerosol samples for individual particle analysis...
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National Institute of Polar Research
2010
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fttriple:oai:gotriple.eu:oai:doaj.org/article:e4654f8f2f8a4ebbbfc5919fa37d3012 2023-05-15T14:02:53+02:00 Spatial distributions and mixing states of aerosol particles in the summer Antarctic troposphere Keiichiro Hara Naohiko Hirasawa Takashi Yamanouchi Makoto Wada Andreas Herber 2010-12-01 https://doi.org/10.15094/00009581 https://doaj.org/article/e4654f8f2f8a4ebbbfc5919fa37d3012 en other eng National Institute of Polar Research doi:10.15094/00009581 0085-7289 2432-079X https://doaj.org/article/e4654f8f2f8a4ebbbfc5919fa37d3012 undefined Antarctic Record, Vol 54, Iss special issue, Pp 704-730 (2010) geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2010 fttriple https://doi.org/10.15094/00009581 2023-01-22T18:36:46Z Airplane-borne atmospheric measurements (ANTSYO-II: AGAMES) were carried out in the Antarctic regions in December 2006-January 2007. Aerosol measurements and direct aerosol sampling were done around Neumayer, Kohnen, and S17 (close to Syowa Station). Aerosol samples for individual particle analysis were obtained from 28 scientific flights from near ground to 24000 ft (ca. 7500 m) during the campaign using a one-stage aerosol impactor. Preliminary results of individual particle analysis indicate that sulfate particles (mostly H_2SO_4) were dominant aerosol constituents in all flights. In addition, combustion-origin aerosol particles (e.g., soot and sulfate containing K) were identified even in the upper troposphere in Antarctic regions. Also, mineral-like and sea-salt-like particles were identified in the free troposphere. This strongly suggests that combustion-origin aerosol particles and mineral particles were transported from low- and mid-latitudes toward Antarctic regions via the upper free troposphere in the austral summer. Spatial distributions of the number concentrations of aerosol particles indicate horizontal gradient of aerosols from the continent to the open water area due to emission of sea-salt particles from the sea surface. Article in Journal/Newspaper Antarc* Antarctic Unknown Antarctic Austral Kohnen ENVELOPE(0.000,0.000,-75.000,-75.000) Neumayer Syowa Station The Antarctic |
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language |
English |
topic |
geo |
spellingShingle |
geo Keiichiro Hara Naohiko Hirasawa Takashi Yamanouchi Makoto Wada Andreas Herber Spatial distributions and mixing states of aerosol particles in the summer Antarctic troposphere |
topic_facet |
geo |
description |
Airplane-borne atmospheric measurements (ANTSYO-II: AGAMES) were carried out in the Antarctic regions in December 2006-January 2007. Aerosol measurements and direct aerosol sampling were done around Neumayer, Kohnen, and S17 (close to Syowa Station). Aerosol samples for individual particle analysis were obtained from 28 scientific flights from near ground to 24000 ft (ca. 7500 m) during the campaign using a one-stage aerosol impactor. Preliminary results of individual particle analysis indicate that sulfate particles (mostly H_2SO_4) were dominant aerosol constituents in all flights. In addition, combustion-origin aerosol particles (e.g., soot and sulfate containing K) were identified even in the upper troposphere in Antarctic regions. Also, mineral-like and sea-salt-like particles were identified in the free troposphere. This strongly suggests that combustion-origin aerosol particles and mineral particles were transported from low- and mid-latitudes toward Antarctic regions via the upper free troposphere in the austral summer. Spatial distributions of the number concentrations of aerosol particles indicate horizontal gradient of aerosols from the continent to the open water area due to emission of sea-salt particles from the sea surface. |
format |
Article in Journal/Newspaper |
author |
Keiichiro Hara Naohiko Hirasawa Takashi Yamanouchi Makoto Wada Andreas Herber |
author_facet |
Keiichiro Hara Naohiko Hirasawa Takashi Yamanouchi Makoto Wada Andreas Herber |
author_sort |
Keiichiro Hara |
title |
Spatial distributions and mixing states of aerosol particles in the summer Antarctic troposphere |
title_short |
Spatial distributions and mixing states of aerosol particles in the summer Antarctic troposphere |
title_full |
Spatial distributions and mixing states of aerosol particles in the summer Antarctic troposphere |
title_fullStr |
Spatial distributions and mixing states of aerosol particles in the summer Antarctic troposphere |
title_full_unstemmed |
Spatial distributions and mixing states of aerosol particles in the summer Antarctic troposphere |
title_sort |
spatial distributions and mixing states of aerosol particles in the summer antarctic troposphere |
publisher |
National Institute of Polar Research |
publishDate |
2010 |
url |
https://doi.org/10.15094/00009581 https://doaj.org/article/e4654f8f2f8a4ebbbfc5919fa37d3012 |
long_lat |
ENVELOPE(0.000,0.000,-75.000,-75.000) |
geographic |
Antarctic Austral Kohnen Neumayer Syowa Station The Antarctic |
geographic_facet |
Antarctic Austral Kohnen Neumayer Syowa Station The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Antarctic Record, Vol 54, Iss special issue, Pp 704-730 (2010) |
op_relation |
doi:10.15094/00009581 0085-7289 2432-079X https://doaj.org/article/e4654f8f2f8a4ebbbfc5919fa37d3012 |
op_rights |
undefined |
op_doi |
https://doi.org/10.15094/00009581 |
_version_ |
1766273327873130496 |