Disentangling dynamic contributions to summer 2018 anomalous weather over Europe
Summer 2018 was one of the driest and hottest experienced over northwestern Europe. In contrast, over southern Europe, it was marked by cooler and wetter conditions with flooding over Greece and Spain. This contrasting pattern was particularly enhanced over a 3‐week period starting on 21 June. Two a...
Published in: | Geophysical Research Letters |
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Language: | English |
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American Geophysical Union
2019
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Online Access: | https://doi.org/10.1029/2019GL084601 https://ora.ox.ac.uk/objects/uuid:c2bfa3f6-442e-44c2-9615-c250776ab0ff |
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ftuloxford:oai:ora.ox.ac.uk:uuid:c2bfa3f6-442e-44c2-9615-c250776ab0ff 2023-05-15T17:32:13+02:00 Disentangling dynamic contributions to summer 2018 anomalous weather over Europe Drouard, M Kornhuber, K Woollings, T 2019-10-30 https://doi.org/10.1029/2019GL084601 https://ora.ox.ac.uk/objects/uuid:c2bfa3f6-442e-44c2-9615-c250776ab0ff eng eng American Geophysical Union doi:10.1029/2019GL084601 https://ora.ox.ac.uk/objects/uuid:c2bfa3f6-442e-44c2-9615-c250776ab0ff https://doi.org/10.1029/2019GL084601 info:eu-repo/semantics/openAccess CC Attribution (CC BY) CC-BY Journal article 2019 ftuloxford https://doi.org/10.1029/2019GL084601 2022-06-28T20:23:08Z Summer 2018 was one of the driest and hottest experienced over northwestern Europe. In contrast, over southern Europe, it was marked by cooler and wetter conditions with flooding over Greece and Spain. This contrasting pattern was particularly enhanced over a 3‐week period starting on 21 June. Two atmospheric patterns are thought to have largely contributed to this anomalous weather: the positive North Atlantic Oscillation (NAO+) and a Wave‐7 pattern. Using linear regressions on detrended data, we show that the NAO+ was mainly responsible for the observed seasonal anomalies. However, during the 3‐week period, the rare combination of the NAO+ and Wave‐7 is necessary to explain the pattern of the observed anomalies. The global warming trend and, to a lesser extent, nonlinear processes are shown to have furthermore strongly modulated the anomalies associated with these two patterns. Article in Journal/Newspaper North Atlantic North Atlantic oscillation ORA - Oxford University Research Archive Geophysical Research Letters 46 21 12537 12546 |
institution |
Open Polar |
collection |
ORA - Oxford University Research Archive |
op_collection_id |
ftuloxford |
language |
English |
description |
Summer 2018 was one of the driest and hottest experienced over northwestern Europe. In contrast, over southern Europe, it was marked by cooler and wetter conditions with flooding over Greece and Spain. This contrasting pattern was particularly enhanced over a 3‐week period starting on 21 June. Two atmospheric patterns are thought to have largely contributed to this anomalous weather: the positive North Atlantic Oscillation (NAO+) and a Wave‐7 pattern. Using linear regressions on detrended data, we show that the NAO+ was mainly responsible for the observed seasonal anomalies. However, during the 3‐week period, the rare combination of the NAO+ and Wave‐7 is necessary to explain the pattern of the observed anomalies. The global warming trend and, to a lesser extent, nonlinear processes are shown to have furthermore strongly modulated the anomalies associated with these two patterns. |
format |
Article in Journal/Newspaper |
author |
Drouard, M Kornhuber, K Woollings, T |
spellingShingle |
Drouard, M Kornhuber, K Woollings, T Disentangling dynamic contributions to summer 2018 anomalous weather over Europe |
author_facet |
Drouard, M Kornhuber, K Woollings, T |
author_sort |
Drouard, M |
title |
Disentangling dynamic contributions to summer 2018 anomalous weather over Europe |
title_short |
Disentangling dynamic contributions to summer 2018 anomalous weather over Europe |
title_full |
Disentangling dynamic contributions to summer 2018 anomalous weather over Europe |
title_fullStr |
Disentangling dynamic contributions to summer 2018 anomalous weather over Europe |
title_full_unstemmed |
Disentangling dynamic contributions to summer 2018 anomalous weather over Europe |
title_sort |
disentangling dynamic contributions to summer 2018 anomalous weather over europe |
publisher |
American Geophysical Union |
publishDate |
2019 |
url |
https://doi.org/10.1029/2019GL084601 https://ora.ox.ac.uk/objects/uuid:c2bfa3f6-442e-44c2-9615-c250776ab0ff |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
doi:10.1029/2019GL084601 https://ora.ox.ac.uk/objects/uuid:c2bfa3f6-442e-44c2-9615-c250776ab0ff https://doi.org/10.1029/2019GL084601 |
op_rights |
info:eu-repo/semantics/openAccess CC Attribution (CC BY) |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2019GL084601 |
container_title |
Geophysical Research Letters |
container_volume |
46 |
container_issue |
21 |
container_start_page |
12537 |
op_container_end_page |
12546 |
_version_ |
1766130230802513920 |