Carbon isotope measurements of atmospheric C02 at a coastal station in Antarctica
A 3-years series of weekly 3-days integrated COz samples analysed for 13C/12C isotopic ratio is presented, as well as a 2-years continuous sample series of 1-2 weeks integration time, analysed for 'T activity. The samples have been collected at the German Georg von Neumayer research station sit...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.460.3473 2023-05-15T13:56:44+02:00 Carbon isotope measurements of atmospheric C02 at a coastal station in Antarctica Ingeborg Levin Bernd Kromer Dietmar Wagenbach The Pennsylvania State University CiteSeerX Archives 1985 http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.460.3473 http://tellusb.net/index.php/tellusb/article/download/15326/17171/ en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.460.3473 http://tellusb.net/index.php/tellusb/article/download/15326/17171/ Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://tellusb.net/index.php/tellusb/article/download/15326/17171/ text 1985 ftciteseerx 2016-01-08T06:32:24Z A 3-years series of weekly 3-days integrated COz samples analysed for 13C/12C isotopic ratio is presented, as well as a 2-years continuous sample series of 1-2 weeks integration time, analysed for 'T activity. The samples have been collected at the German Georg von Neumayer research station situated at the Antarctic coast at 70"s. 8"W. The "C measure-ments show a slightly decreasing trend in 6°C of-0.038 * 0.009%,/year as is to be expected due to the global fossil fuel Cot release. A significant seasonal variation is not detectable in the "C record. The AI4C activity of the atmospheric C 0 2 samples is constantly lower by- 1 I f 2%, if compared to the northern hemisphere clean air level. The opposite effect should be expected from an observed C 0 2 concentration difference of about 3 4 ppm between the two hemispheres if due to I4C free fossil fuel CO,. A total (supposedly regional) AI4C depletion of about-20%, to-2S%,, compared to low latitudes in the southern hemisphere, can be attributed to exchange of atmospheric C 0 2 with low I4C surface water (AI4C =- loo%,) due to upwelling in the circum polar region between 50"s and 70"s. This effect can qualitatively be reproduced by a simple one-dimensional atmospheric model. 1. Text Antarc* Antarctic Antarctica Unknown Antarctic Neumayer The Antarctic |
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ftciteseerx |
language |
English |
description |
A 3-years series of weekly 3-days integrated COz samples analysed for 13C/12C isotopic ratio is presented, as well as a 2-years continuous sample series of 1-2 weeks integration time, analysed for 'T activity. The samples have been collected at the German Georg von Neumayer research station situated at the Antarctic coast at 70"s. 8"W. The "C measure-ments show a slightly decreasing trend in 6°C of-0.038 * 0.009%,/year as is to be expected due to the global fossil fuel Cot release. A significant seasonal variation is not detectable in the "C record. The AI4C activity of the atmospheric C 0 2 samples is constantly lower by- 1 I f 2%, if compared to the northern hemisphere clean air level. The opposite effect should be expected from an observed C 0 2 concentration difference of about 3 4 ppm between the two hemispheres if due to I4C free fossil fuel CO,. A total (supposedly regional) AI4C depletion of about-20%, to-2S%,, compared to low latitudes in the southern hemisphere, can be attributed to exchange of atmospheric C 0 2 with low I4C surface water (AI4C =- loo%,) due to upwelling in the circum polar region between 50"s and 70"s. This effect can qualitatively be reproduced by a simple one-dimensional atmospheric model. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Ingeborg Levin Bernd Kromer Dietmar Wagenbach |
spellingShingle |
Ingeborg Levin Bernd Kromer Dietmar Wagenbach Carbon isotope measurements of atmospheric C02 at a coastal station in Antarctica |
author_facet |
Ingeborg Levin Bernd Kromer Dietmar Wagenbach |
author_sort |
Ingeborg Levin |
title |
Carbon isotope measurements of atmospheric C02 at a coastal station in Antarctica |
title_short |
Carbon isotope measurements of atmospheric C02 at a coastal station in Antarctica |
title_full |
Carbon isotope measurements of atmospheric C02 at a coastal station in Antarctica |
title_fullStr |
Carbon isotope measurements of atmospheric C02 at a coastal station in Antarctica |
title_full_unstemmed |
Carbon isotope measurements of atmospheric C02 at a coastal station in Antarctica |
title_sort |
carbon isotope measurements of atmospheric c02 at a coastal station in antarctica |
publishDate |
1985 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.460.3473 http://tellusb.net/index.php/tellusb/article/download/15326/17171/ |
geographic |
Antarctic Neumayer The Antarctic |
geographic_facet |
Antarctic Neumayer The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
http://tellusb.net/index.php/tellusb/article/download/15326/17171/ |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.460.3473 http://tellusb.net/index.php/tellusb/article/download/15326/17171/ |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766264319706660864 |