Atmospheric blockings in Western Siberia. Part 1. Detection features, objective criteria, and their comparison

O. Yu. Antokhina; P. N. Antokhin; O. S. Zorkal’tseva; E. V. Devyatova

doi:10.3103/S106837391710003X

Atmospheric blockings in Western Siberia. Part 1. Detection features, objective criteria, and their comparison

作者: Antokhina O.Y.¹, Antokhin P.N.¹, Zorkal’tseva O.S.², Devyatova E.V.²
隶属关系:
1. Zuev Institute of Atmospheric Optics
2. Institute of Solar-Terrestrial Physics
期: 卷 42, 编号 10 (2017)
页面: 644-652
栏目: Article
URL: https://journals.rcsi.science/1068-3739/article/view/230322
DOI: https://doi.org/10.3103/S106837391710003X
ID: 230322

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详细

Based on the NCEP/NCAR and ERA-Interim reanalysis archives, we investigated different methods to detect atmospheric blocking events in Western Siberia. Two criteria were studied that are based on calculating meridional gradients of the 500 hPa height and potential temperature at the dynamic tropopause. A situation is considered blocking, when it features a gradient inversion of the investigated characteristics. Additionally, we performed a synoptic analysis of individual blocking events.