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Atmospheric Conditions of Tornado Genesis and Universal Tornadic Index Based on Reanalysis Data
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    Abstract:

    The authors used the NCEP reanalysis system to make integrated analysis by region and have found environmental conditions associated with tornadoes taken from Year-book of Meteorological Disasters in China (Xu Xiaofeng, 2005-2012) for the period of 2004-2009. Then an index has been formulated from analyzing kinds of parameters derived from proximity soundings. Results show that favorite significant tornado environments were concentrated in the east of China. The coordinating between low and high situation was important as well as instability energy accumulation and vapor transport. It was also proven that tornadoes in China occur in conditions accompanied by moderate convective available potential energy (CAPE), high wind shear (0-6 km layer shear and 0-1 km layer shear) and low cloud base. The results of this study were used to create a universal tornadic index based on NCEP reanalysis data and designed to forecast activity in tornadic environment. The quality of this index was tested with tornado activities in China for the period from 2010 to 2011.

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王霁吟,陈宝君,宋金杰,王元.2015.基于再分析资料的我国龙卷发生环境和通用龙卷指标[J].气候与环境研究,20(4):411-420. WANG Jiyin, CHEN Baojun, SONG Jinjie, WANG Yuan.2015. Atmospheric Conditions of Tornado Genesis and Universal Tornadic Index Based on Reanalysis Data[J]. Climatic and Environmental Research (in Chinese],20(4):411-420.

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History
  • Received:June 21,2014
  • Revised:
  • Adopted:
  • Online: July 20,2015
  • Published: