Variability of Extreme Air Temperatures and Precipitation in Different Natural Zones in Late XX and Early XXI Centuries According to ERA5 Reanalysis Data

Abstract

Global temperature rise on the planet is accompanied by an increase in the frequency of extreme weather events, which can lead to significant disturbances in plant metabolic processes and the functioning of plant communities. Depending on the type of vegetation and climatic conditions, the extent and nature of this impact can vary significantly. Therefore, the aim of this work was to identify areas with different types of plant communities that have been most affected by extreme temperatures and precipitation in recent decades. To identify regions with temperature and precipitation extremes, we estimated the frequency of exceeding a given threshold (less than 5% quantile or greater than 95% quantile) for selected theoretical probability density functions for the air temperature and precipitation series. The number of cases of exceeding the extreme threshold is calculated for the whole globe, their spatial and temporal variability in different seasons of the year and in the first decades of the XXI century compared to the end of the XX century is analysed. The regions with different types of plant communities with the most pronounced amplification of extreme temperature and precipitation regimes under changing climate conditions were identified.