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Russian Meteorology and Hydrology

, Volume 44, Issue 10, pp 695–703 | Cite as

Atmospheric Circulation Processes and Precipitation Regime in the Northern Part of the Baikal Mountain Region

  • O. P. OsipovaEmail author
  • E. Yu. Osipov
Article
  • 6 Downloads

Abstract

The paper studies the connection between the precipitation regime over the northern Baikal mountain region during the warm season (April–October) and atmospheric macrocirculation processes, the results are presented. Based on the data of ten weather stations, spatiotemporal heterogeneities in the precipitation regime are revealed for the period of 2000–2018. The long-term (since the middle of the 1960s) trends in total precipitation are evaluated. According to the analysis of HYSPLIT five-day backward trajectories (for days with precipitation), the main directions of moisture transport to the study area are identified, and the trajectories are typed for each month. Three groups of atmotpheric macroprocesses which induce precipttation are identified, and the contribution of each group to total precipitation is estimated. The spatial distinction between different parts of the study area in the precipitation regime and predominant moisture sources is found.

Keywords

Baikal mountain region precipitation atmospheric circulation moisture transport HYSPLIT backward trajectories 

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© Allerton Press, Inc. 2019

Authors and Affiliations

  1. 1.Sochava Institute of Geography, Siberian BranchRussian Academy of SciencesIrkutskRussia
  2. 2.Limnological Institute, Siberian BranchRussian Academy of SciencesIrkutskRussia

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