摘要
Some characters of hail,such as its frequency,duration,diameter,disaster degree,were analyzed,based on the 1 375 pieces data of hails in Huhhot from1969 to 2000.Besides,3 000 pieces information about hail prevention from 1985 to 2000 was elaborated.The results showed that normally,the hail disaster lasts less than 5minutes,and its diameter is between 1 to 5 mm.Hail is more likely to happen from 16:00 pm to 17:00 pm.The practice of hail prevention effectively decreased hail disasters,and thus resulted in less damage.
Some characters of hail,such as its frequency,duration,diameter,disaster degree,were analyzed,based on the 1 375 pieces data of hails in Huhhot from1969 to 2000.Besides,3 000 pieces information about hail prevention from 1985 to 2000 was elaborated.The results showed that normally,the hail disaster lasts less than 5minutes,and its diameter is between 1 to 5 mm.Hail is more likely to happen from 16:00 pm to 17:00 pm.The practice of hail prevention effectively decreased hail disasters,and thus resulted in less damage.
基金
Supported by National Program for Science and Technology(2006BAC12B07)
Scientific Research Special Fund for Public Welfare Industry (Meteorology) [GYHY(QX)2007-6-36]
