Snow - HYDRO-CH2018 Synthesis Report Chapters: «Future Changes in Hydrology»

• Unité de recherche: OFEV
• Numéro de projet: ExSt.2020.1035

Mots-clé (Allemand)

Wasser, Studien

Mots-clé (Anglais)

Water, Studies

Mots-clé (Français)

Eaux, Études

Mots-clé (Italien)

Acque, Studi

Description succincte (Anglais)

Due to the great dependence on minus temperatures and precipitation, the snow cover reacts sensitively to temperatures above 0° Celsius and more or less precipitation. Due to climate change and the associated warming, the proportion of precipitation that falls as snow decreases measurably. In addition to this reduction in snowfall, the warmer temperatures also cause the snow cover to melt more quickly. The decline in snowfall has so far mainly affected lower altitudes, where winter temperatures often reach positive levels. The proportion of days with snowfall below 500 m above sea level has fallen by approx. 40% since 1961 and the water temporarily stored in the snow (snow water equivalent) in spring below 1000 m asl. even by approx. 75%.

Documents annexés

• Snow - HYDRO-CH2018 Synthesis Report Chapters: «Future Changes in Hydrology» [PDF] 1'319 kB

Mandataire (Anglais)

ETH Zürich, Versucheanstalt für Wasserbau, Hydrologie und Glaziologie, Zürich

Budget imputé (Anglais)

BAFU

Bases légales (Anglais)

Art. 57 Abs. 1 RVOG | Art. 57 al. 1 LOGA. | Art. 57 cpv. 1 LOGA

Droits d'auteur (Anglais)

Copyright, Bundesbehörden der Schweizerischen Eidgenossenschaft | Droits d'auteur: autorités de la Confédération suisse | Diritti d'autore: autorità della Confederazione Svizzera | Dretgs d'autur: autoritads da la Confederaziun svizra | Copyright, Swiss federal authorities

Renseignements (Anglais)

BAFU, Abteilung Hydrologie, 3003 Bern