On the size distribution of submicron aerosols in the Antarctic atmosphere
Size distributions of submicron aerosols at Syowa Station (69°00'S, 39°35'E), Antarctica were measured for about 5 months from August to December in 1978. An optical particle counter and an automatic size spectrometer which consists of diffusion pipes and Pollak counters were used. The siz...
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National Institute of Polar Research
1982
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fttriple:oai:gotriple.eu:oai:doaj.org/article:1bbcf10fa0714dc4925ab509fe337214 2023-05-15T13:46:30+02:00 On the size distribution of submicron aerosols in the Antarctic atmosphere Tomoyuki Ito 1982-09-01 https://doi.org/10.15094/00008316 https://doaj.org/article/1bbcf10fa0714dc4925ab509fe337214 en other eng National Institute of Polar Research doi:10.15094/00008316 0085-7289 2432-079X https://doaj.org/article/1bbcf10fa0714dc4925ab509fe337214 undefined Antarctic Record, Iss 76, Pp 1-19 (1982) geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 1982 fttriple https://doi.org/10.15094/00008316 2023-01-22T17:51:14Z Size distributions of submicron aerosols at Syowa Station (69°00'S, 39°35'E), Antarctica were measured for about 5 months from August to December in 1978. An optical particle counter and an automatic size spectrometer which consists of diffusion pipes and Pollak counters were used. The size distributions over the radius range between 2×10^cm and 1×10^cm were determined hourly during the period except when the air was contaminated by local sources. The size distribution averaged for December has a bimodal structure with modal radii at 5×10^cm and 4×10^cm. The number of aerosol particles contained in 1(cm)^3 air was 450 including 100 particles whose radii were smaller than 10^cm. The total surface area of the particles was 1×10^(cm)^2,and the total volume 1×10^(cm)^3. Similar bimodal distributions were commonly found in each month. The spectral density of size distribution around the largest modal radii increased from August to December, whereas that around the smallest modal radii did not show any detectable change during the period. In order to explain the observed size distribution is required a continuous production of new particles at an average rate of the order of 10^(cm)^s^ at least. The present results suggest that the most significant origin of Antarctic submicron aerosols must be one involving the homogeneous and heterogeneous condensation process of vapour (probably of H_2SO_4) which is produced photochemically in the clean Antarctic atmosphere. Article in Journal/Newspaper Antarc* Antarctic Antarctica E. Antarctica Unknown Antarctic The Antarctic Syowa Station |
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English |
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geo |
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geo Tomoyuki Ito On the size distribution of submicron aerosols in the Antarctic atmosphere |
topic_facet |
geo |
description |
Size distributions of submicron aerosols at Syowa Station (69°00'S, 39°35'E), Antarctica were measured for about 5 months from August to December in 1978. An optical particle counter and an automatic size spectrometer which consists of diffusion pipes and Pollak counters were used. The size distributions over the radius range between 2×10^cm and 1×10^cm were determined hourly during the period except when the air was contaminated by local sources. The size distribution averaged for December has a bimodal structure with modal radii at 5×10^cm and 4×10^cm. The number of aerosol particles contained in 1(cm)^3 air was 450 including 100 particles whose radii were smaller than 10^cm. The total surface area of the particles was 1×10^(cm)^2,and the total volume 1×10^(cm)^3. Similar bimodal distributions were commonly found in each month. The spectral density of size distribution around the largest modal radii increased from August to December, whereas that around the smallest modal radii did not show any detectable change during the period. In order to explain the observed size distribution is required a continuous production of new particles at an average rate of the order of 10^(cm)^s^ at least. The present results suggest that the most significant origin of Antarctic submicron aerosols must be one involving the homogeneous and heterogeneous condensation process of vapour (probably of H_2SO_4) which is produced photochemically in the clean Antarctic atmosphere. |
format |
Article in Journal/Newspaper |
author |
Tomoyuki Ito |
author_facet |
Tomoyuki Ito |
author_sort |
Tomoyuki Ito |
title |
On the size distribution of submicron aerosols in the Antarctic atmosphere |
title_short |
On the size distribution of submicron aerosols in the Antarctic atmosphere |
title_full |
On the size distribution of submicron aerosols in the Antarctic atmosphere |
title_fullStr |
On the size distribution of submicron aerosols in the Antarctic atmosphere |
title_full_unstemmed |
On the size distribution of submicron aerosols in the Antarctic atmosphere |
title_sort |
on the size distribution of submicron aerosols in the antarctic atmosphere |
publisher |
National Institute of Polar Research |
publishDate |
1982 |
url |
https://doi.org/10.15094/00008316 https://doaj.org/article/1bbcf10fa0714dc4925ab509fe337214 |
geographic |
Antarctic The Antarctic Syowa Station |
geographic_facet |
Antarctic The Antarctic Syowa Station |
genre |
Antarc* Antarctic Antarctica E. Antarctica |
genre_facet |
Antarc* Antarctic Antarctica E. Antarctica |
op_source |
Antarctic Record, Iss 76, Pp 1-19 (1982) |
op_relation |
doi:10.15094/00008316 0085-7289 2432-079X https://doaj.org/article/1bbcf10fa0714dc4925ab509fe337214 |
op_rights |
undefined |
op_doi |
https://doi.org/10.15094/00008316 |
_version_ |
1766243394177204224 |