Time Series Analysis of Atmospheric Precipitation Characteristics in Western Siberia for 1979–2018 across Different Datasets

Elena Kharyutkina,Yuliya Martynova,Sergey Loginov,Ivan Sudakov

doi:10.3390/atmos13020189

Abstract

A comparative statistical analysis of the spatiotemporal variability of atmospheric precipitation characteristics (mean and extreme values) in Western Siberia was performed based on data acquired from meteorological stations, global precipitation datasets such as the project of Asian Precipitation—Highly-Resolved Observational Data Integration Towards Evaluation (APHRODITE) and from Global Precipitation Climatology Centre (GPCC), and reanalysis archives, including from National Centers of Environmental Prediction (NCEP-DOE) and the European Center for Medium Range Weather Forecasts (ERA5) for the period 1979–2018. The best agreement of the values from the observational data was observed with the values from GPCC. This archive also represented the periodicities in the time series of observational data from meteorological stations, especially in the short-period part of the spectrum. Underestimated values were revealed for the APHRODITE archive, while overestimated ones were found for the NCEP reanalysis data. In comparison with GPCC, the ERA5 dataset reproduced the general variability but with a smaller amplitude (the correlation coefficient was up to 0.9). In general, the median estimates of the precipitation amount derived from the meteorological stations’ data, as well from the reanalysis data, were in better agreement with each other rather than their extreme values. However, their temporal variability can be effectively described by other datasets.

Highlights

Climate temperature warming, which has been observed across the planet in recent decades, is typical for the territory of Russia
We reveal that the amount of precipitation in the northern regions of Western Siberia is more than in the southern ones
In the framework of this study, we presented a comparative analysis of the atmospheric precipitation characteristics in Western Siberia from 1979 to 2018 across different datasets

Summary

Introduction

Climate temperature warming, which has been observed across the planet in recent decades, is typical for the territory of Russia. As for atmospheric precipitation for the same time interval, we see (according to Reference [2]) that there is a tendency toward an increase in the annual precipitation in several regions of Siberia and the Russian Far East; precipitation decreases in the northeast of the country. The frequency of heavy precipitation is influenced by changes in the characteristics of air humidity and atmospheric circulation that can lead to the development of extreme climatic events. First of all, this increases the frequency of severe floods and droughts [5]. The trends in extreme precipitation are correlated with the geographic features of the region and the used data source quality [6,7]

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