Accès ouvert
2026
article
OpenAlex
Clarissa Kroll, Christoph Schär, T.‐C. Wong, A Dipankar et autres
Abstract The upper boundary condition treatment in atmospheric models has a pronounced impact on stability and performance. At the same time, the choice of damping settings can severely impact atmospheric states by not sufficiently preventing back‐reflections of vertically propagating waves from the …
ch, it, de, nl
(code pays fourni par la source)
Accès ouvert
2026
conference-abstract
OpenAlex
Christian R. Steger, David Leutwyler, M. Arpagaus, Christoph Schär
Incoming surface radiation in mountainous terrain is strongly modulated by topography. Direct shortwave radiation can be blocked by shadow casting from surrounding terrain and depends on local slope and aspect. Diffuse shortwave and longwave radiation are also affected by terrain, although typically …
ch
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
Iris Thurnherr, Ruoyi Cui, Patricio Velasquez, Heini Wernli et autres
Abstract Hail severely impacts humans, crops, and infrastructure. Quantifying future hail trends is extremely challenging due to the complex dynamic, thermodynamic, and microphysical processes behind severe convective storms. Here, we combine a km‐scale convection‐permitting regional climate model and an online hail diagnostic …
ch
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
Monika Feldmann, Max Julius Louis Le Blanc, Killian P. Brennan, Iris Thurnherr et autres
Supercell thunderstorms are the most hazardous thunderstorm category and particularly impactful to society. Their monitoring is challenging and often confined to the radar networks of single countries. By exploiting kilometer-scale climate simulations, we have derived a previously unknown characterization of supercell occurrence …
ch
(code pays fourni par la source)
Accès ouvert
2025
conference-abstract
OpenAlex
Valentin Gebhart, Ellina Agayar, Martin Aregger, Killian P. Brennan et autres
Hail represents the costliest atmospheric peril in Switzerland and many other European countries, highlighting the demand for a good understanding and actionable information about hail risk in current and future climate conditions. For this purpose, the four-year research project scClim, now in …
ch
(code pays fourni par la source)
Accès ouvert
2025
conference-abstract
OpenAlex
Monika Feldmann, Michel Blanc, S Beer, Lena Wilhelm et autres
Supercell thunderstorms are among the most damaging and hazardous weather phenomena. Due to heterogeneous observation networks, no comprehensive and homogeneous observation-based supercell climatology exists for Europe. Utilizing a km-scale 11-year current climate simulation, we derive a climatology for supercell thunderstorms in Europe, …
ch
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
Ruoyi Cui, Iris Thurnherr, Patricio Velasquez, Killian P. Brennan et autres
Abstract Hail and lightning, associated with severe convective storms, can cause extensive damage to infrastructure, agriculture, and ecosystems. Because of the small scale of these storms and the complexity of the involved processes, observing and modeling convective storms is challenging. The potential …
ch
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
Shuchang Liu, Christian Zeman, Christoph Schär
Abstract Clouds exert a significant impact on global temperatures and climate change. Cloud‐radiative feedback (CRF) is one of the major sources of climate change uncertainty. Understanding CRF is therefore crucial for accurate climate projections. Biases like the double‐ITCZ problem in Global Climate …
ch, us
(code pays fourni par la source)
Accès ouvert
2025
conference-abstract
OpenAlex
Luna Santina Lehmann, Erich Fischer, Christoph Schär, Reto Knutti
Recent studies have highlighted the intensification of heavy precipitation events in a warming climate, particularly over orographically complex regions such as the Alps. This study builds on our previous work, which analyzed precipitation scaling rates in kilometer-scale convection-permitting climate models (CPMs) with …
ch
(code pays fourni par la source)
Accès ouvert
2025
conference-abstract
OpenAlex
Ruolan Xiang, Christian R. Steger, Sean D. Willett, Christoph Schär
The Hengduan Mountains region (HM), located in the Eastern Tibetan Plateau, is renowned for its rich biodiversity. High-resolution climate data from past periods are essential for gaining deeper insights into the ecological and evolutionary processes that have shaped this unique and diverse …
ch, ru
(code pays fourni par la source)
Accès ouvert
2025
conference-abstract
OpenAlex
Christoph Schär, Fabiana Chiriatti
Following the extreme European summer heatwave of 2003, it has been suggested that the event might have been associated with changes in the distribution of summer temperatures. Here we revisit this hypothesis and investigate observed European and Swiss summer temperatures for the …
ch
(code pays fourni par la source)
Accès ouvert
2025
conference-abstract
OpenAlex
Iris Thurnherr, Lena Wilhelm, Ruoyi Cui, Monika Feldmann et autres
Thunderstorm-related severe weather, particularly hail, causes extensive damage to life and infrastructure across Europe. However, the effect of a warmer climate on the occurrence of hail is still not fully understood. To date, most projections of hail occurrence under future climate scenarios …
ch
(code pays fourni par la source)