Nighttime mesospheric ozone enhancements during the 2002 southern hemispheric major stratospheric warming
Sudden Stratospheric Warmings (SSW) affect the chemistry and dynamics of the middle atmosphere. Major warmings occur roughly every second winter in the Northern Hemisphere (NH), but has only been observed once in the Southern Hemisphere (SH), during the Antarctic winter of 2002. Observations by the...
Published in: | Journal of Atmospheric and Solar-Terrestrial Physics |
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ftoslouniv:oai:www.duo.uio.no:10852/61277 2023-05-15T13:46:09+02:00 Nighttime mesospheric ozone enhancements during the 2002 southern hemispheric major stratospheric warming Smith-Johnsen, Christine Orsolini, Yvan Stordal, Frode Limpasuvan, Varavut Pérot, Kristell 2018-01-15T15:23:31Z http://hdl.handle.net/10852/61277 http://urn.nb.no/URN:NBN:no-63885 https://doi.org/10.1016/j.jastp.2017.12.018 EN eng Elsevier Science NFR/222390 NFR/223252 http://urn.nb.no/URN:NBN:no-63885 Smith-Johnsen, Christine Orsolini, Yvan Stordal, Frode Limpasuvan, Varavut Pérot, Kristell . Nighttime mesospheric ozone enhancements during the 2002 southern hemispheric major stratospheric warming. Journal of Atmospheric and Solar-Terrestrial Physics. 2018, 168, 100-108 http://hdl.handle.net/10852/61277 1543198 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Atmospheric and Solar-Terrestrial Physics&rft.volume=168&rft.spage=100&rft.date=2018 Journal of Atmospheric and Solar-Terrestrial Physics 168 100 108 http://dx.doi.org/10.1016/j.jastp.2017.12.018 URN:NBN:no-63885 Fulltext https://www.duo.uio.no/bitstream/handle/10852/61277/2/Smith-Johnsen%2Bet%2Bal_J%2BAtmos%2BSolar%2BTerr%2BPhys_2017_n.pdf Attribution-NonCommercial-NoDerivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/ CC-BY-NC-ND 1364-6826 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2018 ftoslouniv https://doi.org/10.1016/j.jastp.2017.12.018 2020-06-21T08:51:43Z Sudden Stratospheric Warmings (SSW) affect the chemistry and dynamics of the middle atmosphere. Major warmings occur roughly every second winter in the Northern Hemisphere (NH), but has only been observed once in the Southern Hemisphere (SH), during the Antarctic winter of 2002. Observations by the Global Ozone Monitoring by Occultation of Stars (GOMOS, an instrument on board Envisat) during this rare event, show a 40% increase of ozone in the nighttime secondary ozone layer at subpolar latitudes compared to non-SSW years. This study investigates the cause of the mesospheric nighttime ozone increase, using the National Center for Atmospheric Research (NCAR) Whole Atmosphere Community Climate Model with specified dynamics (SD-WACCM). The 2002 SH winter was characterized by several reductions of the strength of the polar night jet in the upper stratosphere before the jet reversed completely, marking the onset of the major SSW. At the time of these wind reductions, corresponding episodic increases can be seen in the modelled nighttime secondary ozone layer. This ozone increase is attributed largely to enhanced upwelling and the associated cooling of the altitude region in conjunction with the wind reversal. This is in correspondence to similar studies of SSW induced ozone enhancements in NH. But unlike its NH counterpart, the SH secondary ozone layer appeared to be impacted less by episodic variations in atomic hydrogen. Seasonally decreasing atomic hydrogen plays however a larger role in SH compared to NH. Article in Journal/Newspaper Antarc* Antarctic polar night Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Antarctic The Antarctic Journal of Atmospheric and Solar-Terrestrial Physics 168 100 108 |
institution |
Open Polar |
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Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Sudden Stratospheric Warmings (SSW) affect the chemistry and dynamics of the middle atmosphere. Major warmings occur roughly every second winter in the Northern Hemisphere (NH), but has only been observed once in the Southern Hemisphere (SH), during the Antarctic winter of 2002. Observations by the Global Ozone Monitoring by Occultation of Stars (GOMOS, an instrument on board Envisat) during this rare event, show a 40% increase of ozone in the nighttime secondary ozone layer at subpolar latitudes compared to non-SSW years. This study investigates the cause of the mesospheric nighttime ozone increase, using the National Center for Atmospheric Research (NCAR) Whole Atmosphere Community Climate Model with specified dynamics (SD-WACCM). The 2002 SH winter was characterized by several reductions of the strength of the polar night jet in the upper stratosphere before the jet reversed completely, marking the onset of the major SSW. At the time of these wind reductions, corresponding episodic increases can be seen in the modelled nighttime secondary ozone layer. This ozone increase is attributed largely to enhanced upwelling and the associated cooling of the altitude region in conjunction with the wind reversal. This is in correspondence to similar studies of SSW induced ozone enhancements in NH. But unlike its NH counterpart, the SH secondary ozone layer appeared to be impacted less by episodic variations in atomic hydrogen. Seasonally decreasing atomic hydrogen plays however a larger role in SH compared to NH. |
format |
Article in Journal/Newspaper |
author |
Smith-Johnsen, Christine Orsolini, Yvan Stordal, Frode Limpasuvan, Varavut Pérot, Kristell |
spellingShingle |
Smith-Johnsen, Christine Orsolini, Yvan Stordal, Frode Limpasuvan, Varavut Pérot, Kristell Nighttime mesospheric ozone enhancements during the 2002 southern hemispheric major stratospheric warming |
author_facet |
Smith-Johnsen, Christine Orsolini, Yvan Stordal, Frode Limpasuvan, Varavut Pérot, Kristell |
author_sort |
Smith-Johnsen, Christine |
title |
Nighttime mesospheric ozone enhancements during the 2002 southern hemispheric major stratospheric warming |
title_short |
Nighttime mesospheric ozone enhancements during the 2002 southern hemispheric major stratospheric warming |
title_full |
Nighttime mesospheric ozone enhancements during the 2002 southern hemispheric major stratospheric warming |
title_fullStr |
Nighttime mesospheric ozone enhancements during the 2002 southern hemispheric major stratospheric warming |
title_full_unstemmed |
Nighttime mesospheric ozone enhancements during the 2002 southern hemispheric major stratospheric warming |
title_sort |
nighttime mesospheric ozone enhancements during the 2002 southern hemispheric major stratospheric warming |
publisher |
Elsevier Science |
publishDate |
2018 |
url |
http://hdl.handle.net/10852/61277 http://urn.nb.no/URN:NBN:no-63885 https://doi.org/10.1016/j.jastp.2017.12.018 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic polar night |
genre_facet |
Antarc* Antarctic polar night |
op_source |
1364-6826 |
op_relation |
NFR/222390 NFR/223252 http://urn.nb.no/URN:NBN:no-63885 Smith-Johnsen, Christine Orsolini, Yvan Stordal, Frode Limpasuvan, Varavut Pérot, Kristell . Nighttime mesospheric ozone enhancements during the 2002 southern hemispheric major stratospheric warming. Journal of Atmospheric and Solar-Terrestrial Physics. 2018, 168, 100-108 http://hdl.handle.net/10852/61277 1543198 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Atmospheric and Solar-Terrestrial Physics&rft.volume=168&rft.spage=100&rft.date=2018 Journal of Atmospheric and Solar-Terrestrial Physics 168 100 108 http://dx.doi.org/10.1016/j.jastp.2017.12.018 URN:NBN:no-63885 Fulltext https://www.duo.uio.no/bitstream/handle/10852/61277/2/Smith-Johnsen%2Bet%2Bal_J%2BAtmos%2BSolar%2BTerr%2BPhys_2017_n.pdf |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.jastp.2017.12.018 |
container_title |
Journal of Atmospheric and Solar-Terrestrial Physics |
container_volume |
168 |
container_start_page |
100 |
op_container_end_page |
108 |
_version_ |
1766237806894514176 |