On double Rossby wave breaking in the North Atlantic
We discuss the dynamical features associated with double Rossby wave breaking (DWB, concurrent cyclonic and anticyclonic breakings) over the North Atlantic, with a focus on the North Atlantic Oscillation (NAO), the midlatitude jet stream, and surface wind extremes over continental Europe. Objective...
Published in: | Journal of Geophysical Research: Atmospheres |
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Stockholms universitet, Meteorologiska institutionen (MISU)
2015
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-124495 https://doi.org/10.1002/2015JD023854 |
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ftstockholmuniv:oai:DiVA.org:su-124495 2023-05-15T17:28:15+02:00 On double Rossby wave breaking in the North Atlantic Messori, Gabriele Caballero, Rodrigo 2015 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-124495 https://doi.org/10.1002/2015JD023854 eng eng Stockholms universitet, Meteorologiska institutionen (MISU) Journal of Geophysical Research - Atmospheres, 2169-897X, 2015, 120:21, s. 11129-11150 orcid:0000-0002-5507-9209 http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-124495 doi:10.1002/2015JD023854 ISI:000367823600006 info:eu-repo/semantics/openAccess Earth and Related Environmental Sciences Geovetenskap och miljövetenskap Article in journal info:eu-repo/semantics/article text 2015 ftstockholmuniv https://doi.org/10.1002/2015JD023854 2023-02-23T21:43:26Z We discuss the dynamical features associated with double Rossby wave breaking (DWB, concurrent cyclonic and anticyclonic breakings) over the North Atlantic, with a focus on the North Atlantic Oscillation (NAO), the midlatitude jet stream, and surface wind extremes over continental Europe. Objective automated algorithms for detecting wave breaking and determining the location, intensity, and direction of the jet are adopted. The analysis is performed on the European Centre for Medium-Range Weather Forecasts ERA-Interim reanalysis and the Max Planck Institute Earth System Model (MPI-ESM). We find that DWB events can project onto both phases of the NAO, albeit showing no strong preference for either. Wave-breaking pairs occurring in the northern North Atlantic project onto the positive NAO, while the opposite holds for pairs occurring farther south. DWB also affects the direction and intensity of the jet stream. Events in the eastern half of the basin (EWB) intensify and zonalize the jet, while events farther to the west (WWB) weaken the westerly flow over Europe. An analysis of destructive wind storms over Europe in the last three decades suggests that these are typically associated with a very intense, zonal jet-similar to the case of EWB. Indeed, EWB corresponds to an enhanced likelihood of destructive windstorms over the continent, although there is not a one-to-one correspondence. The MPI-ESMmodel does not capture this statistical relationship. On the contrary, WWB corresponds to a decreased likelihood of destructive weather. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Stockholm University: Publications (DiVA) Journal of Geophysical Research: Atmospheres 120 21 11,129 11,150 |
institution |
Open Polar |
collection |
Stockholm University: Publications (DiVA) |
op_collection_id |
ftstockholmuniv |
language |
English |
topic |
Earth and Related Environmental Sciences Geovetenskap och miljövetenskap |
spellingShingle |
Earth and Related Environmental Sciences Geovetenskap och miljövetenskap Messori, Gabriele Caballero, Rodrigo On double Rossby wave breaking in the North Atlantic |
topic_facet |
Earth and Related Environmental Sciences Geovetenskap och miljövetenskap |
description |
We discuss the dynamical features associated with double Rossby wave breaking (DWB, concurrent cyclonic and anticyclonic breakings) over the North Atlantic, with a focus on the North Atlantic Oscillation (NAO), the midlatitude jet stream, and surface wind extremes over continental Europe. Objective automated algorithms for detecting wave breaking and determining the location, intensity, and direction of the jet are adopted. The analysis is performed on the European Centre for Medium-Range Weather Forecasts ERA-Interim reanalysis and the Max Planck Institute Earth System Model (MPI-ESM). We find that DWB events can project onto both phases of the NAO, albeit showing no strong preference for either. Wave-breaking pairs occurring in the northern North Atlantic project onto the positive NAO, while the opposite holds for pairs occurring farther south. DWB also affects the direction and intensity of the jet stream. Events in the eastern half of the basin (EWB) intensify and zonalize the jet, while events farther to the west (WWB) weaken the westerly flow over Europe. An analysis of destructive wind storms over Europe in the last three decades suggests that these are typically associated with a very intense, zonal jet-similar to the case of EWB. Indeed, EWB corresponds to an enhanced likelihood of destructive windstorms over the continent, although there is not a one-to-one correspondence. The MPI-ESMmodel does not capture this statistical relationship. On the contrary, WWB corresponds to a decreased likelihood of destructive weather. |
format |
Article in Journal/Newspaper |
author |
Messori, Gabriele Caballero, Rodrigo |
author_facet |
Messori, Gabriele Caballero, Rodrigo |
author_sort |
Messori, Gabriele |
title |
On double Rossby wave breaking in the North Atlantic |
title_short |
On double Rossby wave breaking in the North Atlantic |
title_full |
On double Rossby wave breaking in the North Atlantic |
title_fullStr |
On double Rossby wave breaking in the North Atlantic |
title_full_unstemmed |
On double Rossby wave breaking in the North Atlantic |
title_sort |
on double rossby wave breaking in the north atlantic |
publisher |
Stockholms universitet, Meteorologiska institutionen (MISU) |
publishDate |
2015 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-124495 https://doi.org/10.1002/2015JD023854 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
Journal of Geophysical Research - Atmospheres, 2169-897X, 2015, 120:21, s. 11129-11150 orcid:0000-0002-5507-9209 http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-124495 doi:10.1002/2015JD023854 ISI:000367823600006 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2015JD023854 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
120 |
container_issue |
21 |
container_start_page |
11,129 |
op_container_end_page |
11,150 |
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1766120804285677568 |