Daily precipitation variability in the southern Alps since the late 19th century

Brugnara, Yuri; Maugeri, Maurizio (2019). Daily precipitation variability in the southern Alps since the late 19th century. International journal of climatology, 39(8), pp. 3492-3504. Wiley 10.1002/joc.6034

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We analysed a data set of 18 homogenized daily precipitation series from the southern European Alps, covering approximately the last 150 years. Previously available data from stations in Northern Italy have been extended considerably by recent digitization work, and, for the first time, they have been combined with daily data from Swiss stations on a centennial scale. Precipitation frequency in the southern Alps decreased significantly over the period 1890–2017. We show that this trend is related to a step-like reduction in cyclonic weather types over central Europe that occurred around 1940. This decrease is an example of the large variability that affects precipitation in the region over many different time cales. In particular, strong trends on a decadal scale are related to the Atlantic Multidecadal Oscillation and the North Atlantic Oscillation, although the influence of the latter is present only in the recent decades. Trends in heavy precipitation indices do not show a coherent pattern across the study area. We find a significant increase in heavy precipitation in Switzerland, while a decrease affects the southeastern subset in spring.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geography > Physical Geography > Unit Climatology
10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)
08 Faculty of Science > Institute of Geography
08 Faculty of Science > Institute of Geography > Physical Geography

UniBE Contributor:

Brugnara, Yuri

Subjects:

900 History > 910 Geography & travel

ISSN:

0899-8418

Publisher:

Wiley

Language:

English

Submitter:

Saba Sabina Baer

Date Deposited:

25 Apr 2019 09:46

Last Modified:

08 Jun 2019 01:32

Publisher DOI:

10.1002/joc.6034

BORIS DOI:

10.7892/boris.127643

URI:

https://boris.unibe.ch/id/eprint/127643

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