Polar low tracks over the Nordic Seas: a 14-winter climatic analysis
International audience To develop a 14-winter (October–April; 1999–2013) climatic description of polar low (PL) occurrence for the Nordic Seas, systems have been tracked using images acquired from the Very High Resolution Radiometer (AVHRR). Also, the dominant PL characteristics – their temporal and...
Published in: | Tellus A: Dynamic Meteorology and Oceanography |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2015
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Subjects: | |
Online Access: | https://doi.org/10.3402/tellusa.v67.24660 https://hal.archives-ouvertes.fr/hal-01872789 |
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fttriple:oai:gotriple.eu:10670/1.jsk6df |
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openpolar |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
polar low the Norwegian Sea the Barents Sea tracks weather regime sea-ice dual and multiple systems envir geo |
spellingShingle |
polar low the Norwegian Sea the Barents Sea tracks weather regime sea-ice dual and multiple systems envir geo Rojo, Maxence Claud, Chantal Mallet, Paul-Etienne Noer, Gunnar Carleton, Andrew Vicomte, Marie Polar low tracks over the Nordic Seas: a 14-winter climatic analysis |
topic_facet |
polar low the Norwegian Sea the Barents Sea tracks weather regime sea-ice dual and multiple systems envir geo |
description |
International audience To develop a 14-winter (October–April; 1999–2013) climatic description of polar low (PL) occurrence for the Nordic Seas, systems have been tracked using images acquired from the Very High Resolution Radiometer (AVHRR). Also, the dominant PL characteristics – their temporal and spatial distributions, size, lifespan, distance travelled, speed of propagation and directions – have been determined. On average, 14 PL events occur per winter but there is strong inter-annual and intra-seasonal variability. Although systems may form and travel over the whole Nordic Seas, their genesis is enhanced in areas characterised by warm oceanic currents. At the start of the season (October–November), systems mainly form over the Greenland and Norwegian Seas, but further into winter they form increasingly over the Barents Sea. In connection with recent low-ice winters, new areas of PL formation are evident, particularly to the west of Spitsbergen and in the Barents Sea. PL speeds of propagation range between 5 and 13 m/s but are observed to be highly variable among cases and even during the lifespan of individual PLs. To a considerable extent, the direction of movement is controlled by the large-scale flow in the lowest atmospheric layers, but we also observed cyclonic co-rotation of some pairs of PLs due to their influence on the ambient flow. Although these generally move southward or southeastward, a substantial number of PLs have westward and even northward tracks. PLs in the western part of the region average larger than their eastern counterparts. This study also highlights that PLs characteristics and tracks differ according to weather regimes. |
author2 |
Cultures, Environnements, Arctique, Représentations, Climat (CEARC) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École des Ponts ParisTech (ENPC)-École polytechnique (X)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC) Observatoire de Versailles Saint-Quentin-en-Yvelines (OVSQ) Norwegian Meteorological Institute Oslo (MET) Earth and Environmental Systems Institute PennState (EESI) Pennsylvania State University (Penn State) Penn State System-Penn State System Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) |
format |
Article in Journal/Newspaper |
author |
Rojo, Maxence Claud, Chantal Mallet, Paul-Etienne Noer, Gunnar Carleton, Andrew Vicomte, Marie |
author_facet |
Rojo, Maxence Claud, Chantal Mallet, Paul-Etienne Noer, Gunnar Carleton, Andrew Vicomte, Marie |
author_sort |
Rojo, Maxence |
title |
Polar low tracks over the Nordic Seas: a 14-winter climatic analysis |
title_short |
Polar low tracks over the Nordic Seas: a 14-winter climatic analysis |
title_full |
Polar low tracks over the Nordic Seas: a 14-winter climatic analysis |
title_fullStr |
Polar low tracks over the Nordic Seas: a 14-winter climatic analysis |
title_full_unstemmed |
Polar low tracks over the Nordic Seas: a 14-winter climatic analysis |
title_sort |
polar low tracks over the nordic seas: a 14-winter climatic analysis |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://doi.org/10.3402/tellusa.v67.24660 https://hal.archives-ouvertes.fr/hal-01872789 |
geographic |
Barents Sea Greenland Norwegian Sea |
geographic_facet |
Barents Sea Greenland Norwegian Sea |
genre |
Barents Sea Greenland Nordic Seas Norwegian Sea Sea ice Spitsbergen |
genre_facet |
Barents Sea Greenland Nordic Seas Norwegian Sea Sea ice Spitsbergen |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0280-6495 EISSN: 1600-0870 Tellus A Tellus A, Co-Action Publishing, 2015, 67 (1), ⟨10.3402/tellusa.v67.24660⟩ |
op_relation |
hal-01872789 doi:10.3402/tellusa.v67.24660 10670/1.jsk6df https://hal.archives-ouvertes.fr/hal-01872789 |
op_rights |
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op_doi |
https://doi.org/10.3402/tellusa.v67.24660 |
container_title |
Tellus A: Dynamic Meteorology and Oceanography |
container_volume |
67 |
container_issue |
1 |
container_start_page |
24660 |
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1766369769731129344 |
spelling |
fttriple:oai:gotriple.eu:10670/1.jsk6df 2023-05-15T15:38:37+02:00 Polar low tracks over the Nordic Seas: a 14-winter climatic analysis Rojo, Maxence Claud, Chantal Mallet, Paul-Etienne Noer, Gunnar Carleton, Andrew Vicomte, Marie Cultures, Environnements, Arctique, Représentations, Climat (CEARC) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École des Ponts ParisTech (ENPC)-École polytechnique (X)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC) Observatoire de Versailles Saint-Quentin-en-Yvelines (OVSQ) Norwegian Meteorological Institute Oslo (MET) Earth and Environmental Systems Institute PennState (EESI) Pennsylvania State University (Penn State) Penn State System-Penn State System Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) 2015-11-06 https://doi.org/10.3402/tellusa.v67.24660 https://hal.archives-ouvertes.fr/hal-01872789 en eng HAL CCSD Co-Action Publishing hal-01872789 doi:10.3402/tellusa.v67.24660 10670/1.jsk6df https://hal.archives-ouvertes.fr/hal-01872789 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0280-6495 EISSN: 1600-0870 Tellus A Tellus A, Co-Action Publishing, 2015, 67 (1), ⟨10.3402/tellusa.v67.24660⟩ polar low the Norwegian Sea the Barents Sea tracks weather regime sea-ice dual and multiple systems envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2015 fttriple https://doi.org/10.3402/tellusa.v67.24660 2023-01-22T17:41:09Z International audience To develop a 14-winter (October–April; 1999–2013) climatic description of polar low (PL) occurrence for the Nordic Seas, systems have been tracked using images acquired from the Very High Resolution Radiometer (AVHRR). Also, the dominant PL characteristics – their temporal and spatial distributions, size, lifespan, distance travelled, speed of propagation and directions – have been determined. On average, 14 PL events occur per winter but there is strong inter-annual and intra-seasonal variability. Although systems may form and travel over the whole Nordic Seas, their genesis is enhanced in areas characterised by warm oceanic currents. At the start of the season (October–November), systems mainly form over the Greenland and Norwegian Seas, but further into winter they form increasingly over the Barents Sea. In connection with recent low-ice winters, new areas of PL formation are evident, particularly to the west of Spitsbergen and in the Barents Sea. PL speeds of propagation range between 5 and 13 m/s but are observed to be highly variable among cases and even during the lifespan of individual PLs. To a considerable extent, the direction of movement is controlled by the large-scale flow in the lowest atmospheric layers, but we also observed cyclonic co-rotation of some pairs of PLs due to their influence on the ambient flow. Although these generally move southward or southeastward, a substantial number of PLs have westward and even northward tracks. PLs in the western part of the region average larger than their eastern counterparts. This study also highlights that PLs characteristics and tracks differ according to weather regimes. Article in Journal/Newspaper Barents Sea Greenland Nordic Seas Norwegian Sea Sea ice Spitsbergen Unknown Barents Sea Greenland Norwegian Sea Tellus A: Dynamic Meteorology and Oceanography 67 1 24660 |