Institute of Geography

Group Portrait

Lena Wilhelm

PhD Student

Climate Impact Research

E-Mail
lena.wilhelm@unibe.ch
Office
408
Postal Address
University of Bern
Institute of Geography
Climate Impacts
Hallerstrasse 12
CH-3012 Bern

PhD-Projekt

In my PhD I am looking at the variability of hail in Switzerland. It is part of the interdisciplinary scClim project.

Research activity

In Switzerland hail regularly causes substantial damage to agriculture, cars, and infrastructure. With the high year-to-year variability of Swiss hailstorms, it is important that we understand the key drivers of past interannual hail variability and changes in hail seasonality north and south of the Swiss Alps. In my PhD I am looking at this variability and possible changes by producing a daily hail time series for Northern and Southern Switzerland from 1950 to today from radar hail proxies.
This work is part of the inter- and transdisciplinary scClim project (Seamless coupling of kilometer-resolution weather predictions and climate simulations with hail impact assessments for multiple sectors). scClim will establish a seamless model chain from thunderstorm simulations to the quantification of hail impacts in Switzerland under current and future climate conditions. A close dialogue with key stakeholders and partners from the public and private sector enables us to explore the potential of impact-based warnings and to assess hail risk today and in a changing climate.

Publications

Jump to: 2024 | 2023 | 2022

2024

Wilhelm, Lena; Martius, Olivia; Schörer, Katharina; Schwierz, Cornelia (18 April 2024). Long-Term Trends and Drivers of Hailstorms in Switzerland. In: EGU General Assembly 2024. Copernicus Publications 10.5194/egusphere-egu24-19897

Thurnherr, Iris; Velasquez, Patricio; Cui, Ruoyi; Brennan, Killian P.; Wilhelm, Lena; Wernli, Heini; Steger, Christian R.; Schär, Christoph (1 March 2024). The effect of 3°C global warming on hail in Europe (Unpublished). In: 4th European Hail Workshop. Karslruhe. 05-07.03.2024.

Wilhelm, Lena; Martius, Olivia; Schwierz, Cornelia; Schörer, Katharina (1 March 2024). Hail in Switzerland– Modeled trends, decadal variability, and large-scale drivers (Unpublished). In: 4th European Hail Workshop. Karslruhe. 05-07.03.2024.

Wilhelm, Lena; Schwierz, Cornelia; Schörer, Katharina; Taszarek, Mateusz; Martius, Olivia (23 February 2024). A modelled multi-decadal hailday time series for Switzerland (EGUsphere). Copernicus 10.5194/egusphere-2024-371

Villinger, Leonie; Aregger, Martin; Brennan, Killian; Calanca, Pierluigi; Cui, Ruoyi; Martius, Olivia; Portmann, Raphael; Schär, Christoph; Schmid, Timo; Thurnherr, Iris; Velasquez, Patricio; Wernli, Heini; Wilhelm, Lena; Bresch, David N. (2024). Seamless coupling of kilometer-resolution weather predictions and climate simulations with hail impact assessments for multiple sectors (scClim) (Unpublished). In: 4th European Hail Workshop. Karslruhe. 05-07.03.2024.

Berzina, Stella; Wilhelm, Lena; Aregger, Martin Pius; Martius, Olivia (2024). Co-occurrence of hail and heavy precipitation in Switzerland (Unpublished). In: 4th European Hail Workshop. Karslruhe. 05-07.03.2024.

2023

Wilhelm, Lena; Martius, Olivia; Schröer, Katharina; Schwierz, Cornelia (May 2023). Hail time series from radar proxies for decadal variability of hail in Switzerland. In: 11th European Conference on Severe Storms. Bucharest. 10.5194/ecss2023-56

2022

Wilhelm, Lena; Martius, Olivia; Schwierz, Cornelia; Schröer, Katharina (12 April 2022). Multidecadal daily hail time series for Switzerland from radar proxies and ERA-5 reanalysis (Unpublished). In: Swiss Global Change Day.

Gierens, Klaus; Wilhelm, Lena; Hofer, Sina; Rohs, Susanne (2022). The effect of ice supersaturation and thin cirrus on lapse rates in the upper troposphere. Atmospheric chemistry and physics, 22(11), pp. 7699-7712. European Geosciences Union 10.5194/acp-22-7699-2022

Wilhelm, Lena; Gierens, Klaus; Rohs, Susanne (2022). Meteorological Conditions That Promote Persistent Contrails. Applied Sciences, 12(9), p. 4450. MDPI 10.3390/app12094450