%0 Journal Article %A LUO Xiping %A LIAO Bo %A ZHANG Xiaojuan %A CUI Lei %A LUO Xiong %T Climatic characteristics of hail in Guizhou from 1961 to 2020 %D 2022 %R 10.11755/j.issn.1006-7639(2022)-06-1024 %J Journal of Arid Meteorology %P 1024-1032 %V 40 %N 6 %X

Based on the hail weather observation data of 84 surface meteorological observation stations in Guizhou Province from 1961 to 2020, the temporal and spatial distribution characteristics of hail are analyzed, the features of hail weather such as regularity of the occurrence dates of the first and last hail, hail diameter and duration of a hail are explored further. Finally, suggestions for artificial hail prevention are proposed. The results show that the spatial distribution of annual average hail days in Guizhou was uneven, there was a regional difference which is the annual average hail days is more in west than in east and the annual average hail days is more in central than in north and south. Hail days decreased significantly (P<0.01) in the past 60 years. The frequent months of hail in Guizhou is from February to May, accounting for 85.0% of the annual hail days, the frequent period of hail is from 14:00 BST to 02:00 BST of the next day. In past 60 years, the average time of the first hail in Guizhou starts from east to west from late February to mid May, and the last hail ends from east to west from late March to late July. The occurrence frequency of middle-diameter hail accounts for 68.9%, and the duration of a hail is mainly concentrated within 10 minutes. Due to the obvious regional differences in seasonal and diurnal variation, and the occurrence dates of the first and last hail, local hail regularity should be fully mastered when carrying out hail prevention, and various artificial hail prevention work should be arranged reasonably.

%U http://www.ghqx.org.cn/EN/10.11755/j.issn.1006-7639(2022)-06-1024