Vertical and interhemispheric links in the stratosphere-mesosphere as revealed by the day-to-day variability of Aura-MLS temperature data
The coupling processes in the middle atmosphere have been a subject of intense research activity because of their effects on atmospheric circulation, structure, variability, and the distribution of chemical constituents. In this study, the day-to-day variability of Aura-MLS (Microwave Limb Sounder)...
Published in: | Annales Geophysicae |
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Language: | English |
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Copernicus
2009
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Online Access: | http://nora.nerc.ac.uk/id/eprint/10589/ https://nora.nerc.ac.uk/id/eprint/10589/1/angeo-27-3387-2009.pdf https://doi.org/10.5194/angeo-27-3387-2009 |
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ftnerc:oai:nora.nerc.ac.uk:10589 2023-05-15T13:45:10+02:00 Vertical and interhemispheric links in the stratosphere-mesosphere as revealed by the day-to-day variability of Aura-MLS temperature data Xu, X. Manson, A.H. Meek, C.E. Chshyolkova, T. Drummond, J.R. Hall, C.M. Riggin, D.M. Hibbins, R.E. 2009 text http://nora.nerc.ac.uk/id/eprint/10589/ https://nora.nerc.ac.uk/id/eprint/10589/1/angeo-27-3387-2009.pdf https://doi.org/10.5194/angeo-27-3387-2009 en eng Copernicus https://nora.nerc.ac.uk/id/eprint/10589/1/angeo-27-3387-2009.pdf Xu, X.; Manson, A.H.; Meek, C.E.; Chshyolkova, T.; Drummond, J.R.; Hall, C.M.; Riggin, D.M.; Hibbins, R.E. orcid:0000-0002-6867-2255 . 2009 Vertical and interhemispheric links in the stratosphere-mesosphere as revealed by the day-to-day variability of Aura-MLS temperature data. Annales Geophysicae, 29 (9). 3387-3409. https://doi.org/10.5194/angeo-27-3387-2009 <https://doi.org/10.5194/angeo-27-3387-2009> Meteorology and Climatology Atmospheric Sciences Publication - Article PeerReviewed 2009 ftnerc https://doi.org/10.5194/angeo-27-3387-2009 2023-02-04T19:26:49Z The coupling processes in the middle atmosphere have been a subject of intense research activity because of their effects on atmospheric circulation, structure, variability, and the distribution of chemical constituents. In this study, the day-to-day variability of Aura-MLS (Microwave Limb Sounder) temperature data are used to reveal the vertical and interhemispheric coupling processes in the stratosphere-mesosphere during four Northern Hemisphere winters (2004/2005–2007/2008). The UKMO (United Kingdom Meteorological Office) assimilated data and mesospheric winds from MF (medium frequency) radars are also applied to help highlight the coupling processes. In this study, a clear vertical link can be seen between the stratosphere and mesosphere during winter months. The coolings and reversals of northward meridional winds in the polar winter mesosphere are often observed in relation to warming events (Sudden Stratospheric Warming, SSW for short) and the associated changes in zonal winds in the polar winter stratosphere. An upper-mesospheric cooling usually precedes the beginning of the warming in the stratosphere by 1–2 days. Inter-hemispheric coupling has been identified initially by a correlation analysis using the year-to-year monthly zonal mean temperature. Then the correlation analyses are performed based upon the daily zonal mean temperature. From the original time sequences, significant positive (negative) correlations are generally found between zonal mean temperatures at the Antarctic summer mesopause and in the Arctic winter stratosphere (mesosphere) during northern mid-winters, although these correlations are dominated by the low frequency variability (i.e. the seasonal trend). Using the short-term oscillations (less than 15 days), the statistical result, by looking for the largest magnitude of correlation within a range of time-lags (0 to 10 days; positive lags mean that the Antarctic summer mesopause is lagging), indicates that the temporal variability of zonal mean temperature at the Antarctic summer ... Article in Journal/Newspaper Antarc* Antarctic Arctic Natural Environment Research Council: NERC Open Research Archive Antarctic Arctic The Antarctic Annales Geophysicae 27 9 3387 3409 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Meteorology and Climatology Atmospheric Sciences |
spellingShingle |
Meteorology and Climatology Atmospheric Sciences Xu, X. Manson, A.H. Meek, C.E. Chshyolkova, T. Drummond, J.R. Hall, C.M. Riggin, D.M. Hibbins, R.E. Vertical and interhemispheric links in the stratosphere-mesosphere as revealed by the day-to-day variability of Aura-MLS temperature data |
topic_facet |
Meteorology and Climatology Atmospheric Sciences |
description |
The coupling processes in the middle atmosphere have been a subject of intense research activity because of their effects on atmospheric circulation, structure, variability, and the distribution of chemical constituents. In this study, the day-to-day variability of Aura-MLS (Microwave Limb Sounder) temperature data are used to reveal the vertical and interhemispheric coupling processes in the stratosphere-mesosphere during four Northern Hemisphere winters (2004/2005–2007/2008). The UKMO (United Kingdom Meteorological Office) assimilated data and mesospheric winds from MF (medium frequency) radars are also applied to help highlight the coupling processes. In this study, a clear vertical link can be seen between the stratosphere and mesosphere during winter months. The coolings and reversals of northward meridional winds in the polar winter mesosphere are often observed in relation to warming events (Sudden Stratospheric Warming, SSW for short) and the associated changes in zonal winds in the polar winter stratosphere. An upper-mesospheric cooling usually precedes the beginning of the warming in the stratosphere by 1–2 days. Inter-hemispheric coupling has been identified initially by a correlation analysis using the year-to-year monthly zonal mean temperature. Then the correlation analyses are performed based upon the daily zonal mean temperature. From the original time sequences, significant positive (negative) correlations are generally found between zonal mean temperatures at the Antarctic summer mesopause and in the Arctic winter stratosphere (mesosphere) during northern mid-winters, although these correlations are dominated by the low frequency variability (i.e. the seasonal trend). Using the short-term oscillations (less than 15 days), the statistical result, by looking for the largest magnitude of correlation within a range of time-lags (0 to 10 days; positive lags mean that the Antarctic summer mesopause is lagging), indicates that the temporal variability of zonal mean temperature at the Antarctic summer ... |
format |
Article in Journal/Newspaper |
author |
Xu, X. Manson, A.H. Meek, C.E. Chshyolkova, T. Drummond, J.R. Hall, C.M. Riggin, D.M. Hibbins, R.E. |
author_facet |
Xu, X. Manson, A.H. Meek, C.E. Chshyolkova, T. Drummond, J.R. Hall, C.M. Riggin, D.M. Hibbins, R.E. |
author_sort |
Xu, X. |
title |
Vertical and interhemispheric links in the stratosphere-mesosphere as revealed by the day-to-day variability of Aura-MLS temperature data |
title_short |
Vertical and interhemispheric links in the stratosphere-mesosphere as revealed by the day-to-day variability of Aura-MLS temperature data |
title_full |
Vertical and interhemispheric links in the stratosphere-mesosphere as revealed by the day-to-day variability of Aura-MLS temperature data |
title_fullStr |
Vertical and interhemispheric links in the stratosphere-mesosphere as revealed by the day-to-day variability of Aura-MLS temperature data |
title_full_unstemmed |
Vertical and interhemispheric links in the stratosphere-mesosphere as revealed by the day-to-day variability of Aura-MLS temperature data |
title_sort |
vertical and interhemispheric links in the stratosphere-mesosphere as revealed by the day-to-day variability of aura-mls temperature data |
publisher |
Copernicus |
publishDate |
2009 |
url |
http://nora.nerc.ac.uk/id/eprint/10589/ https://nora.nerc.ac.uk/id/eprint/10589/1/angeo-27-3387-2009.pdf https://doi.org/10.5194/angeo-27-3387-2009 |
geographic |
Antarctic Arctic The Antarctic |
geographic_facet |
Antarctic Arctic The Antarctic |
genre |
Antarc* Antarctic Arctic |
genre_facet |
Antarc* Antarctic Arctic |
op_relation |
https://nora.nerc.ac.uk/id/eprint/10589/1/angeo-27-3387-2009.pdf Xu, X.; Manson, A.H.; Meek, C.E.; Chshyolkova, T.; Drummond, J.R.; Hall, C.M.; Riggin, D.M.; Hibbins, R.E. orcid:0000-0002-6867-2255 . 2009 Vertical and interhemispheric links in the stratosphere-mesosphere as revealed by the day-to-day variability of Aura-MLS temperature data. Annales Geophysicae, 29 (9). 3387-3409. https://doi.org/10.5194/angeo-27-3387-2009 <https://doi.org/10.5194/angeo-27-3387-2009> |
op_doi |
https://doi.org/10.5194/angeo-27-3387-2009 |
container_title |
Annales Geophysicae |
container_volume |
27 |
container_issue |
9 |
container_start_page |
3387 |
op_container_end_page |
3409 |
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1766214209741258752 |