Influence of atmospheric circulation on precipitation in Altai Mountains

作     者：MALYGINA Natalia PAPINA Tatiana KONONOVA Nina BARLYAEVA Tatiana 

作者机构：Institute for Water and Environmental ProblemsSiberian Branch of the Russian Academy of SciencesBarnaul 656038Russia Institute of GeographyRussian Academy of SciencesMoscow 117312Russia Laboratoire d'Astrophysique de Marseille UMR 7326CNRS-INSUMarseille13388France 

出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)

年 卷 期：2017年第14卷第1期

页      面：46-59页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

基　　金：supported by RFBR according to the research project No.16-35-00188 mol_a project“Climatic and ecological changes in Siberia by the data on glacio-chemical,diatomic and sporepollen analysis of ice-cores”(No.0383-2014-0005) 

主　　题：Altai Mountains Precipitation Atmospheric circulation 

摘      要：We analyzed the changes in precipitation regime in the Altai Mountains for 1959-2014 and estimate the influence of atmospheric circulations on these changes. Our study showed that during last 56 years the changes in the precipitation regime had a positive trend for the warm seasons(April-October),but weakly positive or negative trends for the cold seasons(November-March). It was found that these changes correspond to the decreasing contribution of Northern meridional and Stationary anticyclone(Nm-Sa) and Northern meridional and East zonal(Nm-Ez) circulation groups and to the increasing contribution of West zonal and Southern meridional(Wz-Sm) circulation groups,accordingly to the Dzerdzeevskii classification. In addition,it was found that the variation of precipitation has a step change point in 1980. For the warm seasons,the precipitation change at this point is associated with the reduced influence of West zonal(Wz),Northern meridional and Stationary anticyclone(Nm-Sa) and Northern meridional and Southern meridional(Nm-Sm) circulation groups. For the cold seasons,a substantialincrease of Wz-Sm and a decrease of Nm-Sa,Nm-Ez circulation groups are responsible for the precipitation change in the two time periods(1959-1980 and 1981-2014).