Mapping the bioclimatology conditions of Czechia

This work introduces the framework of the project focused on the creation of the first bioclimatological atlas of Czechia, where the overview of the evolution of factors influencing human stress and outdoor activities will be provided. In this contribution, the first results of our work describing influence of weather on human in Czechia are presented. The atlas will be divided into several chapters according to the complexity of data. First of all, maps of standard meteorological parameters, such as temperature, humidity, wind, sunshine duration, etc., will be provided. The main source of data is gridded dataset created by interpolation of observed data into the regular grid with approximately 500 m resolution. Due to the availability of data, the period between 1991 and 2020 is utilized. Station data are interpolated with the use of krigging method, allowing meteorological parameters to be modified by altitude. The same data are further used for determination of number of days, in which specific thresholds are exceeded, e.g. day with strong precipitation, strong wind, maximum temperature above 30 °C etc. Furthermore, indices determining the degree of thermal stress on human will be provided, such as wet bulb temperature, and the UTCI index, the latter of which is created within the Aladin renalysis for Czechia. The final part evaluates the possible temporal evolution of thermal stress up to 2100, based on the UTCI index obtained from the Aladin-Climate project. In future, regarding the determination of areas with similar thermal burden on human, complex classification techniques will be applied to domains with both standard meteorological parameters and indices (UTCI). The determination of such regions is necessary not only for the atlas, but also for operational meteorology, owing to the new concept of biometeorological forecast.