The Hiccup: a dynamical coupling process during the autumn transition in the Northern Hemisphere – similarities and differences to sudden stratospheric warmings
Sudden stratospheric warmings (SSWs) are the most prominent vertical coupling process in the middle atmosphere, which occur during winter and are caused by the interaction of planetary waves (PWs) with the zonal mean flow. Vertical coupling has also been identified during the equinox transitions, an...
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fttibhannoverren:oai:oa.tib.eu:123456789/9173 2024-09-15T17:39:23+00:00 The Hiccup: a dynamical coupling process during the autumn transition in the Northern Hemisphere – similarities and differences to sudden stratospheric warmings Matthias, V. Shepherd, T.G. Hoffmann, P. Rapp, M. 2015 application/pdf https://oa.tib.eu/renate/handle/123456789/9173 https://doi.org/10.34657/8211 eng eng Katlenburg, Lindau : Copernicus ESSN:1432-0576 DOI:https://doi.org/10.5194/angeo-33-199-2015 https://oa.tib.eu/renate/handle/123456789/9173 https://doi.org/10.34657/8211 CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ frei zugänglich ddc:550 atmospheric modeling autumn coupling Northern Hemisphere stratosphere warming zonal wind status-type:publishedVersion doc-type:Article doc-type:Text 2015 fttibhannoverren https://doi.org/10.34657/821110.5194/angeo-33-199-2015 2024-06-26T23:32:42Z Sudden stratospheric warmings (SSWs) are the most prominent vertical coupling process in the middle atmosphere, which occur during winter and are caused by the interaction of planetary waves (PWs) with the zonal mean flow. Vertical coupling has also been identified during the equinox transitions, and is similarly associated with PWs. We argue that there is a characteristic aspect of the autumn transition in northern high latitudes, which we call the "hiccup", and which acts like a "mini SSW", i.e. like a small minor warming. We study the average characteristics of the hiccup based on a superimposed epoch analysis using a nudged version of the Canadian Middle Atmosphere Model, representing 30 years of historical data. Hiccups can be identified in about half the years studied. The mesospheric zonal wind results are compared to radar observations over Andenes (69° N, 16° E) for the years 2000–2013. A comparison of the average characteristics of hiccups and SSWs shows both similarities and differences between the two vertical coupling processes. Article in Journal/Newspaper Andenes Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover) |
institution |
Open Polar |
collection |
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover) |
op_collection_id |
fttibhannoverren |
language |
English |
topic |
ddc:550 atmospheric modeling autumn coupling Northern Hemisphere stratosphere warming zonal wind |
spellingShingle |
ddc:550 atmospheric modeling autumn coupling Northern Hemisphere stratosphere warming zonal wind Matthias, V. Shepherd, T.G. Hoffmann, P. Rapp, M. The Hiccup: a dynamical coupling process during the autumn transition in the Northern Hemisphere – similarities and differences to sudden stratospheric warmings |
topic_facet |
ddc:550 atmospheric modeling autumn coupling Northern Hemisphere stratosphere warming zonal wind |
description |
Sudden stratospheric warmings (SSWs) are the most prominent vertical coupling process in the middle atmosphere, which occur during winter and are caused by the interaction of planetary waves (PWs) with the zonal mean flow. Vertical coupling has also been identified during the equinox transitions, and is similarly associated with PWs. We argue that there is a characteristic aspect of the autumn transition in northern high latitudes, which we call the "hiccup", and which acts like a "mini SSW", i.e. like a small minor warming. We study the average characteristics of the hiccup based on a superimposed epoch analysis using a nudged version of the Canadian Middle Atmosphere Model, representing 30 years of historical data. Hiccups can be identified in about half the years studied. The mesospheric zonal wind results are compared to radar observations over Andenes (69° N, 16° E) for the years 2000–2013. A comparison of the average characteristics of hiccups and SSWs shows both similarities and differences between the two vertical coupling processes. |
format |
Article in Journal/Newspaper |
author |
Matthias, V. Shepherd, T.G. Hoffmann, P. Rapp, M. |
author_facet |
Matthias, V. Shepherd, T.G. Hoffmann, P. Rapp, M. |
author_sort |
Matthias, V. |
title |
The Hiccup: a dynamical coupling process during the autumn transition in the Northern Hemisphere – similarities and differences to sudden stratospheric warmings |
title_short |
The Hiccup: a dynamical coupling process during the autumn transition in the Northern Hemisphere – similarities and differences to sudden stratospheric warmings |
title_full |
The Hiccup: a dynamical coupling process during the autumn transition in the Northern Hemisphere – similarities and differences to sudden stratospheric warmings |
title_fullStr |
The Hiccup: a dynamical coupling process during the autumn transition in the Northern Hemisphere – similarities and differences to sudden stratospheric warmings |
title_full_unstemmed |
The Hiccup: a dynamical coupling process during the autumn transition in the Northern Hemisphere – similarities and differences to sudden stratospheric warmings |
title_sort |
hiccup: a dynamical coupling process during the autumn transition in the northern hemisphere – similarities and differences to sudden stratospheric warmings |
publisher |
Katlenburg, Lindau : Copernicus |
publishDate |
2015 |
url |
https://oa.tib.eu/renate/handle/123456789/9173 https://doi.org/10.34657/8211 |
genre |
Andenes |
genre_facet |
Andenes |
op_relation |
ESSN:1432-0576 DOI:https://doi.org/10.5194/angeo-33-199-2015 https://oa.tib.eu/renate/handle/123456789/9173 https://doi.org/10.34657/8211 |
op_rights |
CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ frei zugänglich |
op_doi |
https://doi.org/10.34657/821110.5194/angeo-33-199-2015 |
_version_ |
1810479530085711872 |