Abstract
Using the data from weather observation stations, an assessment of statistical significance of the first harmonic amplitude of the long-term average daily precipitation series in Russia in 1961‒2020 and their changes in 1991‒2020 compared to 1961‒1990 is made. It is shown that at most stations the first harmonic has a reliable value different from the noise, except for eleven stations in the southern regions of the European part of Russia. It is revealed that on average there is a significant decrease in the first harmonic amplitudes of the daily precipitation series across Russia. An analysis of the spatial distribution of the studied quantities is performed and the presence of large areas with their homogeneous character is demonstrated.
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ACKNOWLEDGMENTS
We are grateful to M.Yu. Bardin for reading the manuscript, constructive feedback and corrections. We also thank Academician V.M. Kotlyakov for the favorable notice about this work and recommending it for publication. Besides, we appreciate the reviewers for reading the manuscript and giving comments that definitely improved its quality.
Funding
The primary processing and statistical analysis of the data were performed on subject 3.2 “Monitoring of the Global Climate and the Climate of the Russian Federation and Its Regions, including Arctic. The Development and Upgrading of Monitoring Technologies” in the plan of research and technological work for 2020‒2024 issued for Roshydromet approved by order no. 745 dated December 31, 2019. The analysis of the spatial distribution of the results obtained was carried out under the State assignment of the Institute of Geography of the Russian Academy of Sciences.
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Popov, I.O., Popova, E.N. Study of Observed Changes in the First Harmonic Amplitude of the Daily Precipitation Amount Series in the Territory of Russia. Dokl. Earth Sc. (2024). https://doi.org/10.1134/S1028334X24601123
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DOI: https://doi.org/10.1134/S1028334X24601123