Switzerland had a nationwide temperature anomaly of -0.3C below the 81-10 baseline

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July 2021 in #Switzerland had a nationwide temperature anomaly of -0.3C below the 81-10 baseline. With the exception of southern Grisons, the Whole amount of precipitation in Switzerland exceeded 180% of the 1981-2010 norm with frequent hailstorms. 
Climate statistics  series of ground-level temperatures in Switzerland date back to the mid-19th century. The mean annual temperature has increased by 1.6°C between 1864 and 2008 with respect to 1970-1991 average conditions. Over the past 100 years (1908-2007), mean annual temperatures increased by 0.11-0.18°C per decade, with no distinctive regional differences. Temperature increase has accelerated substantially in recent decades.

Annual rainfall in Switzerland increased about 120 mm (8%) during the last century. In the northern and western part of the alpine area, mean winter precipitation increased by about 20 to 30% (34). Heavy daily precipitation and heavy precipitation lasting between 3 to 4 days increased in autumn and winter in large parts of the midlands and the northern edge of the Alps . Since evaporation rose in parallel to the warming by 106 mm (24%), the mean annual runoff remained virtually equal.

The results from an analysis of the maxima of long-term (1900–2012) daily precipitation records from a densely sampled Central European station network, spanning Austria, Switzerland, Germany and the Netherlands, support the expected tendency of increasing extreme precipitation intensity with continuing global warming. The increase is approximately 7-8% per degree Celcius, both for short- and long-duration events.


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