Unusually strong nitric oxide descent in the Arctic middle atmosphere in early 2013 as observed by Odin/SMR
The middle atmosphere was affected by an exceptionally strong midwinter stratospheric sudden warming (SSW) during the Arctic winter 2012/2013. These unusual meteorological conditions led to a breakdown of the polar vortex, followed by the reformation of a strong upper stratospheric vortex associated...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2014
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-14-8009-2014 https://doaj.org/article/9ceb33238f6246808a3f70c114c4b93c |
id |
ftdoajarticles:oai:doaj.org/article:9ceb33238f6246808a3f70c114c4b93c |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:9ceb33238f6246808a3f70c114c4b93c 2023-05-15T14:53:39+02:00 Unusually strong nitric oxide descent in the Arctic middle atmosphere in early 2013 as observed by Odin/SMR K. Pérot J. Urban D. P. Murtagh 2014-08-01T00:00:00Z https://doi.org/10.5194/acp-14-8009-2014 https://doaj.org/article/9ceb33238f6246808a3f70c114c4b93c EN eng Copernicus Publications http://www.atmos-chem-phys.net/14/8009/2014/acp-14-8009-2014.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-14-8009-2014 https://doaj.org/article/9ceb33238f6246808a3f70c114c4b93c Atmospheric Chemistry and Physics, Vol 14, Iss 15, Pp 8009-8015 (2014) Physics QC1-999 Chemistry QD1-999 article 2014 ftdoajarticles https://doi.org/10.5194/acp-14-8009-2014 2022-12-31T01:10:46Z The middle atmosphere was affected by an exceptionally strong midwinter stratospheric sudden warming (SSW) during the Arctic winter 2012/2013. These unusual meteorological conditions led to a breakdown of the polar vortex, followed by the reformation of a strong upper stratospheric vortex associated with particularly efficient descent of air. Measurements by the submillimetre radiometer (SMR), on board the Odin satellite, show that very large amounts of nitric oxide (NO), produced by energetic particle precipitation (EPP) in the mesosphere/lower thermosphere (MLT), could thus enter the polar stratosphere in early 2013. The mechanism referring to the downward transport of EPP-generated NO x during winter is generally called the EPP indirect effect. SMR observed up to 20 times more NO in the upper stratosphere than the average NO measured at the same latitude, pressure and time during three previous winters where no mixing between mesospheric and stratospheric air was noticeable. This event turned out to be the strongest in the aeronomy-only period of SMR (2007–present). Our study is based on a comparison with the Arctic winter 2008/2009, when a similar situation was observed. This outstanding situation is the result of the combination of a relatively high geomagnetic activity and an unusually high dynamical activity, which makes this case a prime example to study the EPP impacts on the atmospheric composition. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Midwinter ENVELOPE(139.931,139.931,-66.690,-66.690) Atmospheric Chemistry and Physics 14 15 8009 8015 |
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 K. Pérot J. Urban D. P. Murtagh Unusually strong nitric oxide descent in the Arctic middle atmosphere in early 2013 as observed by Odin/SMR |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
The middle atmosphere was affected by an exceptionally strong midwinter stratospheric sudden warming (SSW) during the Arctic winter 2012/2013. These unusual meteorological conditions led to a breakdown of the polar vortex, followed by the reformation of a strong upper stratospheric vortex associated with particularly efficient descent of air. Measurements by the submillimetre radiometer (SMR), on board the Odin satellite, show that very large amounts of nitric oxide (NO), produced by energetic particle precipitation (EPP) in the mesosphere/lower thermosphere (MLT), could thus enter the polar stratosphere in early 2013. The mechanism referring to the downward transport of EPP-generated NO x during winter is generally called the EPP indirect effect. SMR observed up to 20 times more NO in the upper stratosphere than the average NO measured at the same latitude, pressure and time during three previous winters where no mixing between mesospheric and stratospheric air was noticeable. This event turned out to be the strongest in the aeronomy-only period of SMR (2007–present). Our study is based on a comparison with the Arctic winter 2008/2009, when a similar situation was observed. This outstanding situation is the result of the combination of a relatively high geomagnetic activity and an unusually high dynamical activity, which makes this case a prime example to study the EPP impacts on the atmospheric composition. |
format |
Article in Journal/Newspaper |
author |
K. Pérot J. Urban D. P. Murtagh |
author_facet |
K. Pérot J. Urban D. P. Murtagh |
author_sort |
K. Pérot |
title |
Unusually strong nitric oxide descent in the Arctic middle atmosphere in early 2013 as observed by Odin/SMR |
title_short |
Unusually strong nitric oxide descent in the Arctic middle atmosphere in early 2013 as observed by Odin/SMR |
title_full |
Unusually strong nitric oxide descent in the Arctic middle atmosphere in early 2013 as observed by Odin/SMR |
title_fullStr |
Unusually strong nitric oxide descent in the Arctic middle atmosphere in early 2013 as observed by Odin/SMR |
title_full_unstemmed |
Unusually strong nitric oxide descent in the Arctic middle atmosphere in early 2013 as observed by Odin/SMR |
title_sort |
unusually strong nitric oxide descent in the arctic middle atmosphere in early 2013 as observed by odin/smr |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/acp-14-8009-2014 https://doaj.org/article/9ceb33238f6246808a3f70c114c4b93c |
long_lat |
ENVELOPE(139.931,139.931,-66.690,-66.690) |
geographic |
Arctic Midwinter |
geographic_facet |
Arctic Midwinter |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Atmospheric Chemistry and Physics, Vol 14, Iss 15, Pp 8009-8015 (2014) |
op_relation |
http://www.atmos-chem-phys.net/14/8009/2014/acp-14-8009-2014.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-14-8009-2014 https://doaj.org/article/9ceb33238f6246808a3f70c114c4b93c |
op_doi |
https://doi.org/10.5194/acp-14-8009-2014 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
14 |
container_issue |
15 |
container_start_page |
8009 |
op_container_end_page |
8015 |
_version_ |
1766325251476553728 |