North Atlantic centers of action and seasonal to subseasonal temperature variability in Europe and eastern North America
Abstract The North Atlantic Oscillation (NAO) is one of the most prominent patterns of atmospheric circulation variability in the Northern Hemisphere. Its climate impacts have been identified for regions extending from North America to northern Asia and the Middle East, with implications for sub‐sea...
Published in: | International Journal of Climatology |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2020
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/joc.6806 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6806 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6806 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6806 |
id |
crwiley:10.1002/joc.6806 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/joc.6806 2024-04-28T08:30:25+00:00 North Atlantic centers of action and seasonal to subseasonal temperature variability in Europe and eastern North America Osman, Mahmoud Zaitchik, Benjamin Badr, Hamada Hameed, Sultan 2020 http://dx.doi.org/10.1002/joc.6806 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6806 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6806 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6806 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 41, issue S1 ISSN 0899-8418 1097-0088 Atmospheric Science journal-article 2020 crwiley https://doi.org/10.1002/joc.6806 2024-04-05T07:42:54Z Abstract The North Atlantic Oscillation (NAO) is one of the most prominent patterns of atmospheric circulation variability in the Northern Hemisphere. Its climate impacts have been identified for regions extending from North America to northern Asia and the Middle East, with implications for sub‐seasonal variability and, in some cases, meteorological trends over multiple years to decades. The NAO itself, however, is the combined expression of two pressure centers: the Icelandic Low and the Azores High. Previous work has shown that when these “centers of action” (CoA) are separated out and studied they can often provide better insight and explanatory power than the NAO does on its own. Here, we analyse the influence that the CoA have on daily minimum air temperature in winter and daily maximum temperature in summer in eastern North America and Europe. The paper has two goals: (a) to characterize CoA associations with temperature on a range of timescales, including sub‐seasonal analyses that reflect short‐term dynamics of the CoA and that are frequently ignored in NAO teleconnection studies, and (b) to evaluate NAO and CoA influence on temperature across seasons (winter and summer) and in upstream and downstream regions (eastern North America and Europe) using a consistent combination of datasets and methods, in order to contextualize results from prior studies that targeted a single region or season. We find that associations with summertime daily maximum and wintertime daily minimum temperatures are strongest for seasonal averages, but select CoA indices inform explanation of temperature variability at subseasonal timescales. The strength of the Icelandic Low and the location of both CoA show strong associations in winter, while in summer the locations of the CoA show temperature associations that are distinct from and sometimes stronger than those found for CoA strength or NAO indices. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Wiley Online Library International Journal of Climatology 41 S1 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Atmospheric Science |
spellingShingle |
Atmospheric Science Osman, Mahmoud Zaitchik, Benjamin Badr, Hamada Hameed, Sultan North Atlantic centers of action and seasonal to subseasonal temperature variability in Europe and eastern North America |
topic_facet |
Atmospheric Science |
description |
Abstract The North Atlantic Oscillation (NAO) is one of the most prominent patterns of atmospheric circulation variability in the Northern Hemisphere. Its climate impacts have been identified for regions extending from North America to northern Asia and the Middle East, with implications for sub‐seasonal variability and, in some cases, meteorological trends over multiple years to decades. The NAO itself, however, is the combined expression of two pressure centers: the Icelandic Low and the Azores High. Previous work has shown that when these “centers of action” (CoA) are separated out and studied they can often provide better insight and explanatory power than the NAO does on its own. Here, we analyse the influence that the CoA have on daily minimum air temperature in winter and daily maximum temperature in summer in eastern North America and Europe. The paper has two goals: (a) to characterize CoA associations with temperature on a range of timescales, including sub‐seasonal analyses that reflect short‐term dynamics of the CoA and that are frequently ignored in NAO teleconnection studies, and (b) to evaluate NAO and CoA influence on temperature across seasons (winter and summer) and in upstream and downstream regions (eastern North America and Europe) using a consistent combination of datasets and methods, in order to contextualize results from prior studies that targeted a single region or season. We find that associations with summertime daily maximum and wintertime daily minimum temperatures are strongest for seasonal averages, but select CoA indices inform explanation of temperature variability at subseasonal timescales. The strength of the Icelandic Low and the location of both CoA show strong associations in winter, while in summer the locations of the CoA show temperature associations that are distinct from and sometimes stronger than those found for CoA strength or NAO indices. |
format |
Article in Journal/Newspaper |
author |
Osman, Mahmoud Zaitchik, Benjamin Badr, Hamada Hameed, Sultan |
author_facet |
Osman, Mahmoud Zaitchik, Benjamin Badr, Hamada Hameed, Sultan |
author_sort |
Osman, Mahmoud |
title |
North Atlantic centers of action and seasonal to subseasonal temperature variability in Europe and eastern North America |
title_short |
North Atlantic centers of action and seasonal to subseasonal temperature variability in Europe and eastern North America |
title_full |
North Atlantic centers of action and seasonal to subseasonal temperature variability in Europe and eastern North America |
title_fullStr |
North Atlantic centers of action and seasonal to subseasonal temperature variability in Europe and eastern North America |
title_full_unstemmed |
North Atlantic centers of action and seasonal to subseasonal temperature variability in Europe and eastern North America |
title_sort |
north atlantic centers of action and seasonal to subseasonal temperature variability in europe and eastern north america |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1002/joc.6806 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6806 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6806 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6806 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
International Journal of Climatology volume 41, issue S1 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.6806 |
container_title |
International Journal of Climatology |
container_volume |
41 |
container_issue |
S1 |
_version_ |
1797588293291868160 |