Statistical Characteristics of the Concurrence between Qinghai-Tibetan Plateau Vortex and Qinghai-Tibetan Plateau Shear Line

  • LIU Zimu ,
  • LI Guoping ,
  • ZHANG Bo
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  • School of Atmosphere Sciences, Chengdu University of Information Technology, Chengdu 610225, Sichuan, China;Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing 210044, Jiangsu, China;College of Air Traffic Management, Civil Aviation Flight University of China, Guanghan 618300, Sichuan, China

Received date: 2017-08-31

  Online published: 2018-10-28

Abstract

Qinghai-Tibetan Plateau vortex (QTPV) and Qinghai-Tibetan Plateau Shear Line (QTPSL) as the main weather system affect the plateau region.Using NCEP/CFSR high resolution reanalysis data from 2005 to 2016 to objectively identify QTPV and QTPSL, statistics both concurrent number, generated sequence, and source and so on.The results are as follows:the objective identification QTPV were 45 at an average annual rate in the last 12 years, the QTPSL were 48 at an average annual rate, about 30% QTPV and QTPSL occurred concurrently.The phenomenon of QTPV and QTPSL appears in the whole plateau.When the two appear together, QTPSL usually takes place before the QTPV.When QTPV appears, QTPSL will maintain for a long time, and whether there is QTPSL, QTPV's holding time remain unchanged.

Cite this article

LIU Zimu , LI Guoping , ZHANG Bo . Statistical Characteristics of the Concurrence between Qinghai-Tibetan Plateau Vortex and Qinghai-Tibetan Plateau Shear Line[J]. Plateau Meteorology, 2018 , 37(5) : 1233 -1240 . DOI: 10.7522/j.issn.1000-0534.2018.00028

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