Composite analysis of the tropopause inversion layer in extratropical baroclinic waves
The evolution of the tropopause inversion layer (TIL) during cyclogenesis in the North Atlantic storm track is investigated using operational meteorological analysis data (Integrated Forecast System from the European Centre for Medium-Range Weather Forecasts). For this a total of 130 cyclones have b...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2019
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-19-6621-2019 https://noa.gwlb.de/receive/cop_mods_00002217 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002175/acp-19-6621-2019.pdf https://acp.copernicus.org/articles/19/6621/2019/acp-19-6621-2019.pdf |
id |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00002217 |
---|---|
record_format |
openpolar |
spelling |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00002217 2023-05-15T17:31:36+02:00 Composite analysis of the tropopause inversion layer in extratropical baroclinic waves Kaluza, Thorsten Kunkel, Daniel Hoor, Peter 2019-05 electronic https://doi.org/10.5194/acp-19-6621-2019 https://noa.gwlb.de/receive/cop_mods_00002217 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002175/acp-19-6621-2019.pdf https://acp.copernicus.org/articles/19/6621/2019/acp-19-6621-2019.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-19-6621-2019 https://noa.gwlb.de/receive/cop_mods_00002217 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002175/acp-19-6621-2019.pdf https://acp.copernicus.org/articles/19/6621/2019/acp-19-6621-2019.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2019 ftnonlinearchiv https://doi.org/10.5194/acp-19-6621-2019 2022-02-08T23:01:11Z The evolution of the tropopause inversion layer (TIL) during cyclogenesis in the North Atlantic storm track is investigated using operational meteorological analysis data (Integrated Forecast System from the European Centre for Medium-Range Weather Forecasts). For this a total of 130 cyclones have been analysed during the months August through October between 2010 and 2014 over the North Atlantic. Their paths of migration along with associated flow features in the upper troposphere and lower stratosphere (UTLS) have been tracked based on the mean sea level pressure field. Subsets of the 130 cyclones have been used for composite analysis using minimum sea level pressure to filter the cyclones based on their strength. The composite structure of the TIL strength distribution in connection with the overall UTLS flow strongly resembles the structure of the individual cyclones. Key results are that a strong dipole in TIL strength forms in regions of cyclonic wrap-up of UTLS air masses of different origin and isentropic potential vorticity. These air masses are associated with the cyclonic rotation of the underlying cyclones. The maximum values of enhanced static stability above the tropopause occur north and northeast of the cyclone centre, vertically aligned with outflow regions of strong updraft and cloud formation up to the tropopause, which are situated in anticyclonic flow patterns in the upper troposphere. These regions are co-located with a maximum of vertical shear of the horizontal wind. The strong wind shear within the TIL results in a local minimum of Richardson numbers, representing the possibility for turbulent instability and potential mixing (or air mass exchange) within regions of enhanced static stability in the lowermost stratosphere. Article in Journal/Newspaper North Atlantic Niedersächsisches Online-Archiv NOA Atmospheric Chemistry and Physics 19 10 6621 6636 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Kaluza, Thorsten Kunkel, Daniel Hoor, Peter Composite analysis of the tropopause inversion layer in extratropical baroclinic waves |
topic_facet |
article Verlagsveröffentlichung |
description |
The evolution of the tropopause inversion layer (TIL) during cyclogenesis in the North Atlantic storm track is investigated using operational meteorological analysis data (Integrated Forecast System from the European Centre for Medium-Range Weather Forecasts). For this a total of 130 cyclones have been analysed during the months August through October between 2010 and 2014 over the North Atlantic. Their paths of migration along with associated flow features in the upper troposphere and lower stratosphere (UTLS) have been tracked based on the mean sea level pressure field. Subsets of the 130 cyclones have been used for composite analysis using minimum sea level pressure to filter the cyclones based on their strength. The composite structure of the TIL strength distribution in connection with the overall UTLS flow strongly resembles the structure of the individual cyclones. Key results are that a strong dipole in TIL strength forms in regions of cyclonic wrap-up of UTLS air masses of different origin and isentropic potential vorticity. These air masses are associated with the cyclonic rotation of the underlying cyclones. The maximum values of enhanced static stability above the tropopause occur north and northeast of the cyclone centre, vertically aligned with outflow regions of strong updraft and cloud formation up to the tropopause, which are situated in anticyclonic flow patterns in the upper troposphere. These regions are co-located with a maximum of vertical shear of the horizontal wind. The strong wind shear within the TIL results in a local minimum of Richardson numbers, representing the possibility for turbulent instability and potential mixing (or air mass exchange) within regions of enhanced static stability in the lowermost stratosphere. |
format |
Article in Journal/Newspaper |
author |
Kaluza, Thorsten Kunkel, Daniel Hoor, Peter |
author_facet |
Kaluza, Thorsten Kunkel, Daniel Hoor, Peter |
author_sort |
Kaluza, Thorsten |
title |
Composite analysis of the tropopause inversion layer in extratropical baroclinic waves |
title_short |
Composite analysis of the tropopause inversion layer in extratropical baroclinic waves |
title_full |
Composite analysis of the tropopause inversion layer in extratropical baroclinic waves |
title_fullStr |
Composite analysis of the tropopause inversion layer in extratropical baroclinic waves |
title_full_unstemmed |
Composite analysis of the tropopause inversion layer in extratropical baroclinic waves |
title_sort |
composite analysis of the tropopause inversion layer in extratropical baroclinic waves |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/acp-19-6621-2019 https://noa.gwlb.de/receive/cop_mods_00002217 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002175/acp-19-6621-2019.pdf https://acp.copernicus.org/articles/19/6621/2019/acp-19-6621-2019.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-19-6621-2019 https://noa.gwlb.de/receive/cop_mods_00002217 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002175/acp-19-6621-2019.pdf https://acp.copernicus.org/articles/19/6621/2019/acp-19-6621-2019.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/acp-19-6621-2019 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
19 |
container_issue |
10 |
container_start_page |
6621 |
op_container_end_page |
6636 |
_version_ |
1766129258945576960 |