A diagnosis of warm-core and cold-core extratropical cyclone development using the Zwack–Okossi equation

In this study, the development of a warm-core and cold-core extratropical cyclone over North Atlantic is examined. The geostrophic relative vorticity tendency used to diagnose the development is calculated utilizing the so-called extended form of the Zwack–Okossi development equation. In both cases,...

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Published in:Atmospheric Science Letters
Main Authors: Azad, Roohollah, Sorteberg, Asgeir
Format: Article in Journal/Newspaper
Language:English
Published: Royal Meteorological Society and Wiley-Blackwell 2009
Subjects:
Online Access:https://hdl.handle.net/1956/6612
https://doi.org/10.1002/asl.244
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author Azad, Roohollah
Sorteberg, Asgeir
author_facet Azad, Roohollah
Sorteberg, Asgeir
author_sort Azad, Roohollah
collection University of Bergen: Bergen Open Research Archive (BORA-UiB)
container_start_page n/a
container_title Atmospheric Science Letters
description In this study, the development of a warm-core and cold-core extratropical cyclone over North Atlantic is examined. The geostrophic relative vorticity tendency used to diagnose the development is calculated utilizing the so-called extended form of the Zwack–Okossi development equation. In both cases, the cyclonic vorticity advection acted to develop the system, but warm-air advection (diabatic heating) made the largest contribution to explosive development in the cold-core (warm-core) case. Further, a vertical cross section of the temperature advection in the warm-core case reveals that the largest values of this contributor are located far and ahead of the cyclone center. publishedVersion
format Article in Journal/Newspaper
genre North Atlantic
genre_facet North Atlantic
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op_doi https://doi.org/10.1002/asl.244
op_relation urn:issn:1530-261X
https://hdl.handle.net/1956/6612
https://doi.org/10.1002/asl.244
cristin:509085
op_rights Copyright 2009 Royal Meteorological Society
op_source Atmospheric Science Letters
10
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publishDate 2009
publisher Royal Meteorological Society and Wiley-Blackwell
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spelling ftunivbergen:oai:bora.uib.no:1956/6612 2025-01-16T23:38:14+00:00 A diagnosis of warm-core and cold-core extratropical cyclone development using the Zwack–Okossi equation Azad, Roohollah Sorteberg, Asgeir 2009 application/pdf https://hdl.handle.net/1956/6612 https://doi.org/10.1002/asl.244 eng eng Royal Meteorological Society and Wiley-Blackwell urn:issn:1530-261X https://hdl.handle.net/1956/6612 https://doi.org/10.1002/asl.244 cristin:509085 Copyright 2009 Royal Meteorological Society Atmospheric Science Letters 10 4 220-225 Extratropical cyclone Warm-core and cold-core cyclones Zwack-Okossi equation Geostrophic vorticity tendency Peer reviewed Journal article 2009 ftunivbergen https://doi.org/10.1002/asl.244 2023-03-14T17:44:37Z In this study, the development of a warm-core and cold-core extratropical cyclone over North Atlantic is examined. The geostrophic relative vorticity tendency used to diagnose the development is calculated utilizing the so-called extended form of the Zwack–Okossi development equation. In both cases, the cyclonic vorticity advection acted to develop the system, but warm-air advection (diabatic heating) made the largest contribution to explosive development in the cold-core (warm-core) case. Further, a vertical cross section of the temperature advection in the warm-core case reveals that the largest values of this contributor are located far and ahead of the cyclone center. publishedVersion Article in Journal/Newspaper North Atlantic University of Bergen: Bergen Open Research Archive (BORA-UiB) Atmospheric Science Letters n/a n/a
spellingShingle Extratropical cyclone
Warm-core and cold-core cyclones
Zwack-Okossi equation
Geostrophic vorticity tendency
Azad, Roohollah
Sorteberg, Asgeir
A diagnosis of warm-core and cold-core extratropical cyclone development using the Zwack–Okossi equation
title A diagnosis of warm-core and cold-core extratropical cyclone development using the Zwack–Okossi equation
title_full A diagnosis of warm-core and cold-core extratropical cyclone development using the Zwack–Okossi equation
title_fullStr A diagnosis of warm-core and cold-core extratropical cyclone development using the Zwack–Okossi equation
title_full_unstemmed A diagnosis of warm-core and cold-core extratropical cyclone development using the Zwack–Okossi equation
title_short A diagnosis of warm-core and cold-core extratropical cyclone development using the Zwack–Okossi equation
title_sort diagnosis of warm-core and cold-core extratropical cyclone development using the zwack–okossi equation
topic Extratropical cyclone
Warm-core and cold-core cyclones
Zwack-Okossi equation
Geostrophic vorticity tendency
topic_facet Extratropical cyclone
Warm-core and cold-core cyclones
Zwack-Okossi equation
Geostrophic vorticity tendency
url https://hdl.handle.net/1956/6612
https://doi.org/10.1002/asl.244