Climate change scenarios in use: Heat stress in Switzerland

Under hot conditions the human body is able to regulate its core temperature via sweat evaporation, but this ability reduced when air humidity high. These of high and invoke heat stress which a major problem for humans, in particular vulnerable groups population people under physical (e.g. heavy duty work without appropriate cooling systems). It generally expected that frequency, duration magnitude such unfavorable will increase with further climate warming. In respect, services play crucial role by putting together climatological information adaptation solutions reduce future stress. We here assess recently developed CH2018 scenarios Switzerland (https://www.climate-scenarios.ch) terms including their projections. For purpose, we characterize extreme use analogs. By doing so, attempt produce more accessible might foster understanding regional-scale scenarios. Here expressed through Wet Bulb Temperature (TW), relatively simple proxy on depends non-linearly humidity. assessed single-day events spells. Projections based indicate increasing over Switzerland, accentuated towards end century. High be about 3–5 times frequent an emission scenario mitigation (RCP 8.5) than 2.6) 21st The projected results longer spells, thus highlighting importance timely precise prevention strategies context heat-health action plans. Spatial analogs spells greatly vary depending are found Central Europe southern unmitigated