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...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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American Geophysical Union
2019
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| _version_ | 1826295075364143104 |
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| author | Drouard, M Kornhuber, K Woollings, T |
| author_facet | Drouard, M Kornhuber, K Woollings, T |
| author_sort | Drouard, M |
| collection | OXFORD |
| 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. |
| first_indexed | 2024-03-07T03:55:31Z |
| format | Journal article |
| id | oxford-uuid:c2bfa3f6-442e-44c2-9615-c250776ab0ff |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:55:31Z |
| publishDate | 2019 |
| publisher | American Geophysical Union |
| record_format | dspace |
| spelling | oxford-uuid:c2bfa3f6-442e-44c2-9615-c250776ab0ff2022-03-27T06:11:10ZDisentangling dynamic contributions to summer 2018 anomalous weather over EuropeJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c2bfa3f6-442e-44c2-9615-c250776ab0ffEnglishSymplectic Elements at OxfordAmerican Geophysical Union2019Drouard, MKornhuber, KWoollings, TSummer 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. |
| spellingShingle | Drouard, M Kornhuber, K Woollings, T Disentangling dynamic contributions to summer 2018 anomalous weather over Europe |
| title | 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_short | Disentangling dynamic contributions to summer 2018 anomalous weather over Europe |
| title_sort | disentangling dynamic contributions to summer 2018 anomalous weather over europe |
| work_keys_str_mv | AT drouardm disentanglingdynamiccontributionstosummer2018anomalousweatherovereurope AT kornhuberk disentanglingdynamiccontributionstosummer2018anomalousweatherovereurope AT woollingst disentanglingdynamiccontributionstosummer2018anomalousweatherovereurope |