On the variability of atmospheric 222 Rn activity concentrations measured at Neumayer, coastal Antarctica
We report on continuously measured 222 Rn activity concentrations in near-surface air at Neumayer Station in the period 1995–2011. This 17-year record showed no long-term trend and has overall mean ± standard deviation of (0.019 ± 0.012) Bq m −3 . A distinct and persistent seasonality could be disti...
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ftdoajarticles:oai:doaj.org/article:704160ecbb8a4d9691fda8ff707a4f4f 2023-05-15T13:33:25+02:00 On the variability of atmospheric 222 Rn activity concentrations measured at Neumayer, coastal Antarctica R. Weller I. Levin D. Schmithüsen M. Nachbar J. Asseng D. Wagenbach 2014-04-01T00:00:00Z https://doi.org/10.5194/acp-14-3843-2014 https://doaj.org/article/704160ecbb8a4d9691fda8ff707a4f4f EN eng Copernicus Publications http://www.atmos-chem-phys.net/14/3843/2014/acp-14-3843-2014.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-14-3843-2014 https://doaj.org/article/704160ecbb8a4d9691fda8ff707a4f4f Atmospheric Chemistry and Physics, Vol 14, Iss 8, Pp 3843-3853 (2014) Physics QC1-999 Chemistry QD1-999 article 2014 ftdoajarticles https://doi.org/10.5194/acp-14-3843-2014 2022-12-31T00:58:47Z We report on continuously measured 222 Rn activity concentrations in near-surface air at Neumayer Station in the period 1995–2011. This 17-year record showed no long-term trend and has overall mean ± standard deviation of (0.019 ± 0.012) Bq m −3 . A distinct and persistent seasonality could be distinguished with maximum values of (0.028 ± 0.013) Bq m −3 from January to March and minimum values of (0.015 ± 0.009) Bq m −3 from May to October. Elevated 222 Rn activity concentrations were typically associated with air mass transport from the Antarctic Plateau. Our results do not support a relation between enhanced 222 Rn activity concentrations at Neumayer and cyclonic activity or long-range transport from South America. The impact of oceanic 222 Rn emissions could not be properly assessed but we tentatively identified regional sea ice extent (SIE) variability as a significant driver of the annual 222 Rn cycle. Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Neumayer Neumayer Station Atmospheric Chemistry and Physics 14 8 3843 3853 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 R. Weller I. Levin D. Schmithüsen M. Nachbar J. Asseng D. Wagenbach On the variability of atmospheric 222 Rn activity concentrations measured at Neumayer, coastal Antarctica |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
We report on continuously measured 222 Rn activity concentrations in near-surface air at Neumayer Station in the period 1995–2011. This 17-year record showed no long-term trend and has overall mean ± standard deviation of (0.019 ± 0.012) Bq m −3 . A distinct and persistent seasonality could be distinguished with maximum values of (0.028 ± 0.013) Bq m −3 from January to March and minimum values of (0.015 ± 0.009) Bq m −3 from May to October. Elevated 222 Rn activity concentrations were typically associated with air mass transport from the Antarctic Plateau. Our results do not support a relation between enhanced 222 Rn activity concentrations at Neumayer and cyclonic activity or long-range transport from South America. The impact of oceanic 222 Rn emissions could not be properly assessed but we tentatively identified regional sea ice extent (SIE) variability as a significant driver of the annual 222 Rn cycle. |
format |
Article in Journal/Newspaper |
author |
R. Weller I. Levin D. Schmithüsen M. Nachbar J. Asseng D. Wagenbach |
author_facet |
R. Weller I. Levin D. Schmithüsen M. Nachbar J. Asseng D. Wagenbach |
author_sort |
R. Weller |
title |
On the variability of atmospheric 222 Rn activity concentrations measured at Neumayer, coastal Antarctica |
title_short |
On the variability of atmospheric 222 Rn activity concentrations measured at Neumayer, coastal Antarctica |
title_full |
On the variability of atmospheric 222 Rn activity concentrations measured at Neumayer, coastal Antarctica |
title_fullStr |
On the variability of atmospheric 222 Rn activity concentrations measured at Neumayer, coastal Antarctica |
title_full_unstemmed |
On the variability of atmospheric 222 Rn activity concentrations measured at Neumayer, coastal Antarctica |
title_sort |
on the variability of atmospheric 222 rn activity concentrations measured at neumayer, coastal antarctica |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/acp-14-3843-2014 https://doaj.org/article/704160ecbb8a4d9691fda8ff707a4f4f |
geographic |
Antarctic The Antarctic Neumayer Neumayer Station |
geographic_facet |
Antarctic The Antarctic Neumayer Neumayer Station |
genre |
Antarc* Antarctic Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Sea ice |
op_source |
Atmospheric Chemistry and Physics, Vol 14, Iss 8, Pp 3843-3853 (2014) |
op_relation |
http://www.atmos-chem-phys.net/14/3843/2014/acp-14-3843-2014.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-14-3843-2014 https://doaj.org/article/704160ecbb8a4d9691fda8ff707a4f4f |
op_doi |
https://doi.org/10.5194/acp-14-3843-2014 |
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Atmospheric Chemistry and Physics |
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14 |
container_issue |
8 |
container_start_page |
3843 |
op_container_end_page |
3853 |
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1766042198902571008 |