Analysis of the slope of isentropic surfaces and its tendencies over the North Atlantic
The maintenance of baroclinicity along mid‐ and high‐latitude storm tracks is a matter of ongoing debate. Using an isentropic framework, a novel diagnostic based on the tendency equation for the slope of isentropic surfaces – a measure of the potential for baroclinic development – is presented. The...
Published in: | Quarterly Journal of the Royal Meteorological Society |
---|---|
Main Authors: | , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2015
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/qj.2605 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.2605 https://onlinelibrary.wiley.com/doi/pdf/10.1002/qj.2605 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/qj.2605 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.2605 |
id |
crwiley:10.1002/qj.2605 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/qj.2605 2024-06-23T07:51:38+00:00 Analysis of the slope of isentropic surfaces and its tendencies over the North Atlantic Papritz, Lukas Spengler, Thomas ETH 2015 http://dx.doi.org/10.1002/qj.2605 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.2605 https://onlinelibrary.wiley.com/doi/pdf/10.1002/qj.2605 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/qj.2605 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.2605 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Quarterly Journal of the Royal Meteorological Society volume 141, issue 693, page 3226-3238 ISSN 0035-9009 1477-870X journal-article 2015 crwiley https://doi.org/10.1002/qj.2605 2024-06-11T04:47:52Z The maintenance of baroclinicity along mid‐ and high‐latitude storm tracks is a matter of ongoing debate. Using an isentropic framework, a novel diagnostic based on the tendency equation for the slope of isentropic surfaces – a measure of the potential for baroclinic development – is presented. The tendency comprises contributions from dynamic processes, latent heat release, radiation and subgrid‐scale turbulence, which incorporates the effect of sensible heat fluxes. A climatology of these tendencies over the North Atlantic is compiled for the winters of 2009 and 2010. It is found that adiabatic tilting flattens the isentropic surfaces, reflecting the action of growing baroclinic cyclones. This tendency is balanced climatologically by the generation of slope by diabatic processes. In the lower troposphere, the most intense diabatic increase of slope is found along the oceanic frontal zone associated with the Gulf Stream and at higher latitudes in the Labrador Sea, the Nordic Seas and the Barents Sea. Latent heat release and sensible heat fluxes both contribute substantially in these regions. A quantitative analysis of cold‐air outbreaks emphasizes their important role in restoring the slope in the lower troposphere over the Gulf Stream region and off the sea‐ice edge at high latitudes. In the upper troposphere, latent heat release due to cloud microphysical processes is the dominant mechanism maintaining the slope. Article in Journal/Newspaper Barents Sea Labrador Sea Nordic Seas North Atlantic Sea ice Wiley Online Library Barents Sea Tilting ENVELOPE(-54.065,-54.065,49.700,49.700) Quarterly Journal of the Royal Meteorological Society 141 693 3226 3238 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
The maintenance of baroclinicity along mid‐ and high‐latitude storm tracks is a matter of ongoing debate. Using an isentropic framework, a novel diagnostic based on the tendency equation for the slope of isentropic surfaces – a measure of the potential for baroclinic development – is presented. The tendency comprises contributions from dynamic processes, latent heat release, radiation and subgrid‐scale turbulence, which incorporates the effect of sensible heat fluxes. A climatology of these tendencies over the North Atlantic is compiled for the winters of 2009 and 2010. It is found that adiabatic tilting flattens the isentropic surfaces, reflecting the action of growing baroclinic cyclones. This tendency is balanced climatologically by the generation of slope by diabatic processes. In the lower troposphere, the most intense diabatic increase of slope is found along the oceanic frontal zone associated with the Gulf Stream and at higher latitudes in the Labrador Sea, the Nordic Seas and the Barents Sea. Latent heat release and sensible heat fluxes both contribute substantially in these regions. A quantitative analysis of cold‐air outbreaks emphasizes their important role in restoring the slope in the lower troposphere over the Gulf Stream region and off the sea‐ice edge at high latitudes. In the upper troposphere, latent heat release due to cloud microphysical processes is the dominant mechanism maintaining the slope. |
author2 |
ETH |
format |
Article in Journal/Newspaper |
author |
Papritz, Lukas Spengler, Thomas |
spellingShingle |
Papritz, Lukas Spengler, Thomas Analysis of the slope of isentropic surfaces and its tendencies over the North Atlantic |
author_facet |
Papritz, Lukas Spengler, Thomas |
author_sort |
Papritz, Lukas |
title |
Analysis of the slope of isentropic surfaces and its tendencies over the North Atlantic |
title_short |
Analysis of the slope of isentropic surfaces and its tendencies over the North Atlantic |
title_full |
Analysis of the slope of isentropic surfaces and its tendencies over the North Atlantic |
title_fullStr |
Analysis of the slope of isentropic surfaces and its tendencies over the North Atlantic |
title_full_unstemmed |
Analysis of the slope of isentropic surfaces and its tendencies over the North Atlantic |
title_sort |
analysis of the slope of isentropic surfaces and its tendencies over the north atlantic |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1002/qj.2605 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.2605 https://onlinelibrary.wiley.com/doi/pdf/10.1002/qj.2605 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/qj.2605 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.2605 |
long_lat |
ENVELOPE(-54.065,-54.065,49.700,49.700) |
geographic |
Barents Sea Tilting |
geographic_facet |
Barents Sea Tilting |
genre |
Barents Sea Labrador Sea Nordic Seas North Atlantic Sea ice |
genre_facet |
Barents Sea Labrador Sea Nordic Seas North Atlantic Sea ice |
op_source |
Quarterly Journal of the Royal Meteorological Society volume 141, issue 693, page 3226-3238 ISSN 0035-9009 1477-870X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/qj.2605 |
container_title |
Quarterly Journal of the Royal Meteorological Society |
container_volume |
141 |
container_issue |
693 |
container_start_page |
3226 |
op_container_end_page |
3238 |
_version_ |
1802642759550500864 |