The impact of atmospheric blocking on spatial distributions of summertime precipitation over Eurasia

International Conference and Early Career Scientists School on Environmental Observations, Modelling and Information Systems

生态环境科学;计算机科学

Antokhina, O.Yu.^1 ; Antokhin, P.N.^1 ; Martynova, Yu.V.^2,3 ; Mordvinov, V.I.^4

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, pl. akad. Zueva, 1, Tomsk

634065, Russia^1

Institute of Monitoring of Climatic and Ecological Systems, Siberian Branch, Russian Academy of Sciences, 10/3, Pr. Akademicheskii, Tomsk

634055, Russia^2

Siberian Regional Hydrometeorological Research Institute, 30, ul. Sovetskaya, Novosibirsk

630099, Russia^3

Institute of Solar-Terrestrial Physics, Siberian Branch, Russian Academy of Sciences, 126a ul. Lermontova, Irkutsk

664033, Russia^4

关键词: Arid zones;    Atmospheric blocking;    Era interims;    Heavy rainfall;    Kazakhstan;    Northern China;    Precipitation anomalies;    Reanalysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/48/1/012035/pdf
DOI  :  10.1088/1755-1315/48/1/012035

来源: IOP

【 摘 要 】

The correlation of precipitation anomalies over Eurasia with atmospheric blocking events was examined with ERA Interim reanalysis data. We found that, regardless of the frequency of the atmospheric blocking events, they significantly affect the distribution of rainfall over all Eurasian regions in summer, due to both the change in the westerly transport and the dominant dipole blocking structure. It is important that, depending on the blocking positions in Asia, there are heavy rainfalls in an arid zone which includes Kazakhstan, Mongolia, Northern China, and the Trans-Baikal Territory.