近30年呼和浩特地区降雹特征和防雹情况分析

Analysis on Character of Hail and Hail Prevention in Huhhot in Recent 30 Years

利用呼和浩特地区1969～2000年32年的1375条降雹资料进行统计分析,得出了呼和浩特地区的多年降雹频率年、月变化和降雹的发生时段、持续时间、雹径尺度、受灾等特征,并且对1985～2000年15年的3000多条高炮防雹作业情况进行统计分析。结果表明,降雹持续时间多数是小于5min的短时降雹,以直径1～5mm的小雹为主,最容易发生降雹的时段为16:00～17:00。高炮防雹作业有效地降低了冰雹事件的发生,减少了冰雹灾害造成的损失。

Some characters of hail such as frequency,duration,diameter,disaster degree were analyzed based on the 1 375 hail data of Huhhot from 1969 to 2000.3 000 hail prevention information from 1985 to 2 000 was analyzed.The results showed that normally maintain time is less than 5 minutes,diameter is between 1 to 5 mm,16：00-17：00 is the most hail time.Hail disasters were effectively decreased through hail prevention.