Increased quasi stationarity and persistence of winter Ural blocking and Eurasian extreme cold events in response to Arctic warming. Part II: A theoretical explanation
In Part I of this study, it was shown that the Eurasian cold anomalies related to Arctic warming depend strongly on the quasi stationarity and persistence of the Ural blocking (UB). The analysis here revealed that under weak mean westerly wind (MWW) and vertical shear (VS) (quasi barotropic) conditi...
Published in: | Journal of Climate |
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Language: | English |
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2017
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Online Access: | https://doi.org/10.1175/JCLI-D-16-0262.1 |
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ftncar:oai:drupal-site.org:articles_19814 2023-09-05T13:16:59+02:00 Increased quasi stationarity and persistence of winter Ural blocking and Eurasian extreme cold events in response to Arctic warming. Part II: A theoretical explanation Luo, Dehai (author) Yao, Yao (author) Dai, Aiguo (author) Simmonds, Ian (author) Zhong, Linhao (author) 2017-05 https://doi.org/10.1175/JCLI-D-16-0262.1 en eng Journal of Climate--J. Climate--0894-8755--1520-0442 articles:19814 ark:/85065/d7542qh7 doi:10.1175/JCLI-D-16-0262.1 Copyright 2017 American Meteorological Society (AMS). article Text 2017 ftncar https://doi.org/10.1175/JCLI-D-16-0262.1 2023-08-14T18:47:24Z In Part I of this study, it was shown that the Eurasian cold anomalies related to Arctic warming depend strongly on the quasi stationarity and persistence of the Ural blocking (UB). The analysis here revealed that under weak mean westerly wind (MWW) and vertical shear (VS) (quasi barotropic) conditions with weak synoptic-scale eddies and a large planetary wave anomaly, the growth of UBis slow and its amplitude is small. For this case, a quasi-stationary and persistent UB is seen. However, under strong MWW and VS (quasi baroclinic) conditions, synoptic-scale eddies are stronger and the growth of UB is rapid; the resulting UB is less persistent and has large amplitude. In this case, a marked retrogression of the UB is observed. Article in Journal/Newspaper Arctic OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Arctic Journal of Climate 30 10 3569 3587 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
In Part I of this study, it was shown that the Eurasian cold anomalies related to Arctic warming depend strongly on the quasi stationarity and persistence of the Ural blocking (UB). The analysis here revealed that under weak mean westerly wind (MWW) and vertical shear (VS) (quasi barotropic) conditions with weak synoptic-scale eddies and a large planetary wave anomaly, the growth of UBis slow and its amplitude is small. For this case, a quasi-stationary and persistent UB is seen. However, under strong MWW and VS (quasi baroclinic) conditions, synoptic-scale eddies are stronger and the growth of UB is rapid; the resulting UB is less persistent and has large amplitude. In this case, a marked retrogression of the UB is observed. |
author2 |
Luo, Dehai (author) Yao, Yao (author) Dai, Aiguo (author) Simmonds, Ian (author) Zhong, Linhao (author) |
format |
Article in Journal/Newspaper |
title |
Increased quasi stationarity and persistence of winter Ural blocking and Eurasian extreme cold events in response to Arctic warming. Part II: A theoretical explanation |
spellingShingle |
Increased quasi stationarity and persistence of winter Ural blocking and Eurasian extreme cold events in response to Arctic warming. Part II: A theoretical explanation |
title_short |
Increased quasi stationarity and persistence of winter Ural blocking and Eurasian extreme cold events in response to Arctic warming. Part II: A theoretical explanation |
title_full |
Increased quasi stationarity and persistence of winter Ural blocking and Eurasian extreme cold events in response to Arctic warming. Part II: A theoretical explanation |
title_fullStr |
Increased quasi stationarity and persistence of winter Ural blocking and Eurasian extreme cold events in response to Arctic warming. Part II: A theoretical explanation |
title_full_unstemmed |
Increased quasi stationarity and persistence of winter Ural blocking and Eurasian extreme cold events in response to Arctic warming. Part II: A theoretical explanation |
title_sort |
increased quasi stationarity and persistence of winter ural blocking and eurasian extreme cold events in response to arctic warming. part ii: a theoretical explanation |
publishDate |
2017 |
url |
https://doi.org/10.1175/JCLI-D-16-0262.1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
Journal of Climate--J. Climate--0894-8755--1520-0442 articles:19814 ark:/85065/d7542qh7 doi:10.1175/JCLI-D-16-0262.1 |
op_rights |
Copyright 2017 American Meteorological Society (AMS). |
op_doi |
https://doi.org/10.1175/JCLI-D-16-0262.1 |
container_title |
Journal of Climate |
container_volume |
30 |
container_issue |
10 |
container_start_page |
3569 |
op_container_end_page |
3587 |
_version_ |
1776198352878174208 |