Human Thermal Comfort Conditions during Heat Wave Events in Kyiv, Ukraine

Assessment of the big cities bioclimate during heat wave (HW) events is a highly topical issue and focus point for many researchers. Reliable results assessment stress (HS) intensity HWs form basis development implementation adaptation measures. In Ukraine, first HW studies started only few years ago, thermal comfort conditions these atmospheric phenomena have not been explored yet. The purpose this article to assess characteristic features in Kyiv events. based on index – physiologically equivalent temperature (PET). RayMan model was used simulate PET values. As shown study, period 1961–2020, 24 were observed Kyiv. Those characterized by different duration (from 6 18 days) (with maximum value cumulative Ta,MAX 108.6°C). Thermal registered waves varying from slight (23.7°C) extreme (47.0°C). To impact human, classification mean values single its proposed. According classification, belong three following grades: with moderate, strong, HS. Analysis research demonstrates four (4) moderate stress, nineteen (19) strong one (1) (specifically, late July–first half August 2010). daily at 12 UTC varied 37°C 47°C much higher than days 2005 2014.