Characteristics Similarity Analysis of Two Multi-cell Radar Echoes

Abstract

By using time shifting technology and mathematical statistics method, the evolution process of the formation and development of Hail Cloud monomer and thunderstorm cloud monomer on both sides of Dalou mountain in Guizhou Province on April 30th, 2015 was comparing analyzed. The radar echo characteristic quantity commonly used to identify thunderstorm cloud and hailstorm cloud were selected as the physical quantity for time and trend consistency comparative analysis about typical characteristics of two kinds of radar echo belonging to different precipitation properties of Strong convection monomers. The results show that: (1) The strong convective weather process is composed of two thunderstorm clouds and two hail clouds, which have great consistency on duration and strength characteristics; (2)The time consistency analysis shows that, the two monomers’ echo intensity and the vertical liquid water content have a good consistency on fluctuation, and the trend of synchronization jet lag is about 12 mins;(3)The expected value and correlation coefficient of echo intensity and vertical accumulated liquid water content about two monomers are improved significantly by using the technology called time shifting, and the variation trend of time series has better consistency and correlation; (4) From the perspective of geometric characteristics analysis of the two monomers’ vertical sections, the heights corresponding to the area with high echo intensity are consistent of both, and the vertical profile shape of echo intensity is basically consistent. (5) It is concluded that there is a good similarity between the formation and development of multi-monomer convective weather under the same atmospheric environment conditions. This conclusion can be used as the basis for the selection of physical inspection examples of artificial flood control operations.