Articles | Volume 18, issue 10
Research article
25 Oct 2022
Research article |  | 25 Oct 2022

Pre-industrial temperature variability on the Swiss Plateau derived from the instrumental daily series of Bern and Zurich

Yuri Brugnara, Chantal Hari, Lucas Pfister, Veronika Valler, and Stefan Brönnimann

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Short summary
We digitized dozens of weather journals containing temperature measurements from in and around Bern and Zurich. They cover over a century before the creation of a national weather service in Switzerland. With these data we could create daily temperature series for the two cities that span the last 265 years. We found that the pre-industrial climate on the Swiss Plateau was colder than suggested by previously available instrumental data sets and about 2.5 °C colder than the present-day climate.