Changes of weather conditions in Ukraine under climate changes

V.M. Khokhlov; H.O. Borovska; O.V. Umanska; M.S. Tenetko

doi:10.31481/uhmj.17.2016.04

V.M. Khokhlov
H.O. Borovska
O.V. Umanska
M.S. Tenetko

DOI: https://doi.org/10.31481/uhmj.17.2016.04

Keywords: temperature, precipitation, North Atlantic Oscillation, wavelet analysis

Abstract

The paper analyzes spatiotemporal features the indices of hot, cold and precipitation that are related to weather conditions. The temperature in Ukraine tends to be higher, which is the main regional feature of global climate changes. The North Atlantic Oscillation had an influence on the precipitation in Ukraine – weather is rainier during its negative phases. Also, colder night and hotter days were more frequent during negative phases of the NAO. This fact can be explained by enhancing meridional flows in Ukraine. The wavelet analysis also revealed an impact of the NAO on temperature anomalies – positive phases determined increasing monthly minimum temperatures before the 1980s and decreasing ones after 1980s. Also, the wavelet analysis showed that the Nor-th Atlantic Oscillation influenced the precipitation in northern and southern parts of Ukraine in different ways.

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