Concentration variations of the tropospheric carbon dioxide over the Antarctic region
Aircraft measurements of the atmospheric CO_2 concentration have been made over Syowa Station, Antarctica since 1983. The minimum concentration of the average seasonal CO_2 cycle appears in March throughout the troposphere, while the maximum concentration occurs in mid-August in the upper tropospher...
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ftdoajarticles:oai:doaj.org/article:072d0025fbff4725942ad86fee35a428 2023-05-15T13:33:51+02:00 Concentration variations of the tropospheric carbon dioxide over the Antarctic region Shohei Murayama Takakiyo Nakazawa Shuhji Aoki 1997-03-01T00:00:00Z https://doi.org/10.15094/00008969 https://doaj.org/article/072d0025fbff4725942ad86fee35a428 EN JA eng jpn National Institute of Polar Research http://doi.org/10.15094/00008969 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008969 0085-7289 2432-079X https://doaj.org/article/072d0025fbff4725942ad86fee35a428 Antarctic Record, Vol 41, Iss 1, Pp 191-201 (1997) Geography (General) G1-922 article 1997 ftdoajarticles https://doi.org/10.15094/00008969 2022-12-31T01:02:41Z Aircraft measurements of the atmospheric CO_2 concentration have been made over Syowa Station, Antarctica since 1983. The minimum concentration of the average seasonal CO_2 cycle appears in March throughout the troposphere, while the maximum concentration occurs in mid-August in the upper troposphere and in late September in the middle and lower troposphere. The peak-to-peak amplitude of the seasonal cycle decreases with height. The CO_2 concentration increases with height during most of the year; however, this height dependency is larger from summer to early winter than in the remaining seasons. The average concentration difference between the upper troposphere and the ground surface is about 0.3ppmv. From comparisons with the results of the ground-based and aircraft measurements at southern middle and high latitudes and trajectory analysis, it is hypothesized that the seasonal cycle of height-dependent atmospheric transport processes could influence the seasonal cycle and the vertical distribution of the CO_2 concentration over Syowa Station. Article in Journal/Newspaper Antarc* Antarctic Antarctica Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Syowa Station |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Japanese |
topic |
Geography (General) G1-922 |
spellingShingle |
Geography (General) G1-922 Shohei Murayama Takakiyo Nakazawa Shuhji Aoki Concentration variations of the tropospheric carbon dioxide over the Antarctic region |
topic_facet |
Geography (General) G1-922 |
description |
Aircraft measurements of the atmospheric CO_2 concentration have been made over Syowa Station, Antarctica since 1983. The minimum concentration of the average seasonal CO_2 cycle appears in March throughout the troposphere, while the maximum concentration occurs in mid-August in the upper troposphere and in late September in the middle and lower troposphere. The peak-to-peak amplitude of the seasonal cycle decreases with height. The CO_2 concentration increases with height during most of the year; however, this height dependency is larger from summer to early winter than in the remaining seasons. The average concentration difference between the upper troposphere and the ground surface is about 0.3ppmv. From comparisons with the results of the ground-based and aircraft measurements at southern middle and high latitudes and trajectory analysis, it is hypothesized that the seasonal cycle of height-dependent atmospheric transport processes could influence the seasonal cycle and the vertical distribution of the CO_2 concentration over Syowa Station. |
format |
Article in Journal/Newspaper |
author |
Shohei Murayama Takakiyo Nakazawa Shuhji Aoki |
author_facet |
Shohei Murayama Takakiyo Nakazawa Shuhji Aoki |
author_sort |
Shohei Murayama |
title |
Concentration variations of the tropospheric carbon dioxide over the Antarctic region |
title_short |
Concentration variations of the tropospheric carbon dioxide over the Antarctic region |
title_full |
Concentration variations of the tropospheric carbon dioxide over the Antarctic region |
title_fullStr |
Concentration variations of the tropospheric carbon dioxide over the Antarctic region |
title_full_unstemmed |
Concentration variations of the tropospheric carbon dioxide over the Antarctic region |
title_sort |
concentration variations of the tropospheric carbon dioxide over the antarctic region |
publisher |
National Institute of Polar Research |
publishDate |
1997 |
url |
https://doi.org/10.15094/00008969 https://doaj.org/article/072d0025fbff4725942ad86fee35a428 |
geographic |
Antarctic The Antarctic Syowa Station |
geographic_facet |
Antarctic The Antarctic Syowa Station |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Antarctic Record, Vol 41, Iss 1, Pp 191-201 (1997) |
op_relation |
http://doi.org/10.15094/00008969 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008969 0085-7289 2432-079X https://doaj.org/article/072d0025fbff4725942ad86fee35a428 |
op_doi |
https://doi.org/10.15094/00008969 |
_version_ |
1766046541890453504 |