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://hal.archives-ouvertes.fr/hal-01872789 https://doi.org/10.3402/tellusa.v67.24660 |
id |
ftccsdartic:oai:HAL:hal-01872789v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
polar low the Norwegian Sea the Barents Sea tracks weather regime sea-ice dual and multiple systems [SDE]Environmental Sciences |
spellingShingle |
polar low the Norwegian Sea the Barents Sea tracks weather regime sea-ice dual and multiple systems [SDE]Environmental Sciences 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 [SDE]Environmental Sciences |
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://hal.archives-ouvertes.fr/hal-01872789 https://doi.org/10.3402/tellusa.v67.24660 |
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 |
ISSN: 0280-6495 EISSN: 1600-0870 Tellus A https://hal.archives-ouvertes.fr/hal-01872789 Tellus A, Co-Action Publishing, 2015, 67 (1), ⟨10.3402/tellusa.v67.24660⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3402/tellusa.v67.24660 hal-01872789 https://hal.archives-ouvertes.fr/hal-01872789 doi:10.3402/tellusa.v67.24660 |
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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1766369765011488768 |
spelling |
ftccsdartic:oai:HAL:hal-01872789v1 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://hal.archives-ouvertes.fr/hal-01872789 https://doi.org/10.3402/tellusa.v67.24660 en eng HAL CCSD Co-Action Publishing info:eu-repo/semantics/altIdentifier/doi/10.3402/tellusa.v67.24660 hal-01872789 https://hal.archives-ouvertes.fr/hal-01872789 doi:10.3402/tellusa.v67.24660 ISSN: 0280-6495 EISSN: 1600-0870 Tellus A https://hal.archives-ouvertes.fr/hal-01872789 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 [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2015 ftccsdartic https://doi.org/10.3402/tellusa.v67.24660 2021-12-05T02:33:31Z 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 Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Barents Sea Greenland Norwegian Sea Tellus A: Dynamic Meteorology and Oceanography 67 1 24660 |