Seasonal temperatures over Italy and their relationship with low-frequency atmospheric circulation patterns
An analysis of Italian seasonal temperatures from 1961 to 2006 was carried out, using homogenized data from 49 synoptic stations well distributed throughout Italy. The results show remarkable differences among seasons. Stationarity characterizes winter series, except for Northern Italy (where a warm...
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ftreroch:oai:doc.rero.ch:312524 2023-05-15T15:05:46+02:00 Seasonal temperatures over Italy and their relationship with low-frequency atmospheric circulation patterns Toreti, Andrea Desiato, Franco Fioravanti, Guido Perconti, Walter 2018-06-18T17:47:33Z http://doc.rero.ch/record/312524/files/10584_2009_Article_9640.pdf eng eng http://doc.rero.ch/record/312524/files/10584_2009_Article_9640.pdf 2018 ftreroch 2023-02-16T17:31:12Z An analysis of Italian seasonal temperatures from 1961 to 2006 was carried out, using homogenized data from 49 synoptic stations well distributed throughout Italy. The results show remarkable differences among seasons. Stationarity characterizes winter series, except for Northern Italy (where a warming trend from 1961 is identified); a positive trend over the entire period is recognized for spring series. Summer series are marked by a negative trend until 1981 and by a positive trend afterwards; finally, autumn series show a warming starting from 1970. The relationship between seasonal temperatures and four teleconnection patterns (North Atlantic Oscillation, East Atlantic Pattern, Scandinavian Pattern and Arctic Oscillation) influencing European climate was investigated through Spearman rank correlation and composites. Among the results, the strong linear correlation with the East Atlantic Pattern in all seasons but autumn is remarkable; moreover, the explained variance varies between 31.9% and 50.4% (leaving out autumn). Besides these four atmospheric patterns the role of other factors (e.g. soil moisture) is not dealt with, but their importance and the need for more investigation is pointed out Other/Unknown Material Arctic North Atlantic North Atlantic oscillation RERO DOC Digital Library Arctic |
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RERO DOC Digital Library |
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ftreroch |
language |
English |
description |
An analysis of Italian seasonal temperatures from 1961 to 2006 was carried out, using homogenized data from 49 synoptic stations well distributed throughout Italy. The results show remarkable differences among seasons. Stationarity characterizes winter series, except for Northern Italy (where a warming trend from 1961 is identified); a positive trend over the entire period is recognized for spring series. Summer series are marked by a negative trend until 1981 and by a positive trend afterwards; finally, autumn series show a warming starting from 1970. The relationship between seasonal temperatures and four teleconnection patterns (North Atlantic Oscillation, East Atlantic Pattern, Scandinavian Pattern and Arctic Oscillation) influencing European climate was investigated through Spearman rank correlation and composites. Among the results, the strong linear correlation with the East Atlantic Pattern in all seasons but autumn is remarkable; moreover, the explained variance varies between 31.9% and 50.4% (leaving out autumn). Besides these four atmospheric patterns the role of other factors (e.g. soil moisture) is not dealt with, but their importance and the need for more investigation is pointed out |
author |
Toreti, Andrea Desiato, Franco Fioravanti, Guido Perconti, Walter |
spellingShingle |
Toreti, Andrea Desiato, Franco Fioravanti, Guido Perconti, Walter Seasonal temperatures over Italy and their relationship with low-frequency atmospheric circulation patterns |
author_facet |
Toreti, Andrea Desiato, Franco Fioravanti, Guido Perconti, Walter |
author_sort |
Toreti, Andrea |
title |
Seasonal temperatures over Italy and their relationship with low-frequency atmospheric circulation patterns |
title_short |
Seasonal temperatures over Italy and their relationship with low-frequency atmospheric circulation patterns |
title_full |
Seasonal temperatures over Italy and their relationship with low-frequency atmospheric circulation patterns |
title_fullStr |
Seasonal temperatures over Italy and their relationship with low-frequency atmospheric circulation patterns |
title_full_unstemmed |
Seasonal temperatures over Italy and their relationship with low-frequency atmospheric circulation patterns |
title_sort |
seasonal temperatures over italy and their relationship with low-frequency atmospheric circulation patterns |
publishDate |
2018 |
url |
http://doc.rero.ch/record/312524/files/10584_2009_Article_9640.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic North Atlantic North Atlantic oscillation |
genre_facet |
Arctic North Atlantic North Atlantic oscillation |
op_relation |
http://doc.rero.ch/record/312524/files/10584_2009_Article_9640.pdf |
_version_ |
1766337403464712192 |