A summer climate regime over Europe modulated by the North Atlantic Oscillation
Recent summer heat waves in Europe were found to be preceded by precipitation deficits in winter. Numerical studies suggest that these phenomena are dynamically linked by land-atmosphere interactions. However, there exists as yet no complete observational evidence that connects summer climate variab...
Published in: | Hydrology and Earth System Sciences |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:efa5d3f07e3f46ea8ee404d9e776ba5c 2023-05-15T17:30:38+02:00 A summer climate regime over Europe modulated by the North Atlantic Oscillation G. Wang A. J. Dolman A. Alessandri 2011-01-01 https://doi.org/10.5194/hess-15-57-2011 http://www.hydrol-earth-syst-sci.net/15/57/2011/hess-15-57-2011.pdf https://doaj.org/article/efa5d3f07e3f46ea8ee404d9e776ba5c en eng Copernicus Publications doi:10.5194/hess-15-57-2011 1027-5606 1607-7938 http://www.hydrol-earth-syst-sci.net/15/57/2011/hess-15-57-2011.pdf https://doaj.org/article/efa5d3f07e3f46ea8ee404d9e776ba5c undefined Hydrology and Earth System Sciences, Vol 15, Iss 1, Pp 57-64 (2011) envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2011 fttriple https://doi.org/10.5194/hess-15-57-2011 2023-01-22T16:37:44Z Recent summer heat waves in Europe were found to be preceded by precipitation deficits in winter. Numerical studies suggest that these phenomena are dynamically linked by land-atmosphere interactions. However, there exists as yet no complete observational evidence that connects summer climate variability to winter precipitation and the relevant circulation patterns. In this paper, we investigate the functional responses of summer mean and maximum temperature (June–August, Tmean and Tmax) as well as soil moisture proxied by the self-calibrating Palmer drought severity index (scPDSI) to preceding winter precipitation (January–March, PJFM) for the period 1901–2005. All the analyzed summer fields show distinctive responses to PJFM over the Mediterranean. We estimate that 10 ~ 15% of the interannual variability of Tmax and Tmean over the Mediterranean is statistically forced by PJFM. For the scPDSI this amounts to 10 ~ 25%. Further analysis shows that these responses are highly correlated to the North Atlantic Oscillation (NAO) regime over the Mediterranean. We suggest that NAO modulates European summer temperature by controlling winter precipitation that initializes the moisture states that subsequently interact with temperature. This picture of relations between European summer climate and NAO as well as winter precipitation suggests potential for improved seasonal prediction of summer climate for particular extreme events. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Unknown Hydrology and Earth System Sciences 15 1 57 64 |
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envir geo G. Wang A. J. Dolman A. Alessandri A summer climate regime over Europe modulated by the North Atlantic Oscillation |
topic_facet |
envir geo |
description |
Recent summer heat waves in Europe were found to be preceded by precipitation deficits in winter. Numerical studies suggest that these phenomena are dynamically linked by land-atmosphere interactions. However, there exists as yet no complete observational evidence that connects summer climate variability to winter precipitation and the relevant circulation patterns. In this paper, we investigate the functional responses of summer mean and maximum temperature (June–August, Tmean and Tmax) as well as soil moisture proxied by the self-calibrating Palmer drought severity index (scPDSI) to preceding winter precipitation (January–March, PJFM) for the period 1901–2005. All the analyzed summer fields show distinctive responses to PJFM over the Mediterranean. We estimate that 10 ~ 15% of the interannual variability of Tmax and Tmean over the Mediterranean is statistically forced by PJFM. For the scPDSI this amounts to 10 ~ 25%. Further analysis shows that these responses are highly correlated to the North Atlantic Oscillation (NAO) regime over the Mediterranean. We suggest that NAO modulates European summer temperature by controlling winter precipitation that initializes the moisture states that subsequently interact with temperature. This picture of relations between European summer climate and NAO as well as winter precipitation suggests potential for improved seasonal prediction of summer climate for particular extreme events. |
format |
Article in Journal/Newspaper |
author |
G. Wang A. J. Dolman A. Alessandri |
author_facet |
G. Wang A. J. Dolman A. Alessandri |
author_sort |
G. Wang |
title |
A summer climate regime over Europe modulated by the North Atlantic Oscillation |
title_short |
A summer climate regime over Europe modulated by the North Atlantic Oscillation |
title_full |
A summer climate regime over Europe modulated by the North Atlantic Oscillation |
title_fullStr |
A summer climate regime over Europe modulated by the North Atlantic Oscillation |
title_full_unstemmed |
A summer climate regime over Europe modulated by the North Atlantic Oscillation |
title_sort |
summer climate regime over europe modulated by the north atlantic oscillation |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://doi.org/10.5194/hess-15-57-2011 http://www.hydrol-earth-syst-sci.net/15/57/2011/hess-15-57-2011.pdf https://doaj.org/article/efa5d3f07e3f46ea8ee404d9e776ba5c |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Hydrology and Earth System Sciences, Vol 15, Iss 1, Pp 57-64 (2011) |
op_relation |
doi:10.5194/hess-15-57-2011 1027-5606 1607-7938 http://www.hydrol-earth-syst-sci.net/15/57/2011/hess-15-57-2011.pdf https://doaj.org/article/efa5d3f07e3f46ea8ee404d9e776ba5c |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/hess-15-57-2011 |
container_title |
Hydrology and Earth System Sciences |
container_volume |
15 |
container_issue |
1 |
container_start_page |
57 |
op_container_end_page |
64 |
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1766127489471479808 |