2020. augusztus 13. csütörtök
IDŐJÁRÁS - OMSZ angol nyelvű folyóirat

Vol. 123, No. 4 * October - December 2019

Quarterly Journal of the Hungarian Meteorological Service

Special compilation: Environmental challenges – Smart solutions

letöltés [pdf: 3546 KB]
Cyclical variability of seasonal precipitation in Poland
Jadwiga Nidzgorska-Lencewicz and Małgorzata Czarnecka
 PDF (926 KB)   |   Abstract

The aim of the present paper was an attempt to detect the recurring fluctuations in the course of seasonal sums of precipitation in Poland. The basic material consisted of monthly sums of atmospheric precipitation obtained from 37 IMGW-BIP weather stations from the period 1951 – 2016, excluding the mountain areas. Spectral analysis was performed concerning precipitation sums in the four calendar seasons: spring (March  May), summer (June  August), autumn (September  November), winter (December – February). The results of the spectral analyses showed that the changes in seasonal precipitation sums recorded in the analyzed multiannual period occurred in numerous, statistically significant cycles, with a clear predominance of the cycles with the following length: 4.0, 4.6, 4.9, 5.3, 5.8, 6.4, and 7.1 years. It was found that the winter season is characterized by the most pronounced cyclicality (cycles of 6.4 years), whereas the spring season is marked by the highest variability in terms of periodicity.

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