Application Research of Radar Data in Lightning Warning over Northeast of Guizhou
Fang Biao
Zhang Yi
Yan Xiaodong
Abstract：Based on the new generation doppler weather radar data and lightning locator data in Guizhou,the relationship between lightning activity and radar echo cells in the convective rainfall in northeast of Guizhou from May to August during 2013-2015 were statistically analyzed,the radar products quantity which could reflect the lightning activity were extracted and the threshold of lightning warning in the region were obtained.The results showed that the two indices that echo top (ET) of 35.0 dBz and 25.0 dBz reflectivity exceed the height of-10 ℃ and-20 ℃ layer had better lightning warning effect,the success rate of warning were 0.99 and 0.96,the advance time of lightning warning were 23 and 17 minutes respectively.The warning could be 11 minutes earlier than the occurrence of lightning when the ET exceeding 9.0 km were used to warning lightning.Vertical integrated liquid water (VIL) could be a necessary condition for lightning warning,whose value was 5.0 ～ 15.0 kg · m-3.
Keywords：lightning warningwarning thresholdecho intensityecho topvertical integrated liquid water
Publication Date：2017-07-02
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 133-137 )