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.science/hal-01872789 https://doi.org/10.3402/tellusa.v67.24660 |
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ftuniparissaclay:oai:HAL:hal-01872789v1 |
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openpolar |
institution |
Open Polar |
collection |
Archives ouvertes de Paris-Saclay |
op_collection_id |
ftuniparissaclay |
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) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) Observatoire de Versailles Saint-Quentin-en-Yvelines (OVSQ) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 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) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris |
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.science/hal-01872789 https://doi.org/10.3402/tellusa.v67.24660 |
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.science/hal-01872789 Tellus A, 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.science/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 |
_version_ |
1810434005613412352 |
spelling |
ftuniparissaclay:oai:HAL:hal-01872789v1 2024-09-15T17:57:49+00:00 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) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) Observatoire de Versailles Saint-Quentin-en-Yvelines (OVSQ) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 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) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris 2015-11-06 https://hal.science/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.science/hal-01872789 doi:10.3402/tellusa.v67.24660 ISSN: 0280-6495 EISSN: 1600-0870 Tellus A https://hal.science/hal-01872789 Tellus A, 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 ftuniparissaclay https://doi.org/10.3402/tellusa.v67.24660 2024-08-01T23:49:23Z 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 Archives ouvertes de Paris-Saclay Tellus A: Dynamic Meteorology and Oceanography 67 1 24660 |