ANALYSIS OF RAINFALL IN THE KAZAKHSTAN

Abstract

Before building the storm sewer networks the analysis of precipitation is very important. The issues of assessing the reliability of the information on the annual amounts of precipitation in the meteorological monitoring system of the KazHydroMet State Hydrometeorological Service of Kazakhstan are considered. An assessment is made of the homogeneity of the spatial correlation function, as the basis of the cartographic modeling of the statistical parameters of annual precipitation amounts. A special study aimed at studying the processes of cyclical fluctuations in the temporal variability of annual and summer precipitation amounts for stations representing all regions of the country. The data of daily precipitation of Kazakhstan in the period 1936-2017 were processed. When processing data, an open-source computer program R was used. The results will be useful for designers and researchers. A statistically significant increase in the maximum daily precipitation of 2–4 mm per 10 years was recorded at the Arkalyk, Aksay, Atyrau, Ushtobe, Bektauat and Karabalyk meteorological stations. At some stations in the Akmola and Pavlodar regions, as well as in the south and southeast of the republic, a statistically significant reduction of 2-6 days per 10 years was observed for the maximum duration of the period without precipitation.