The Torrential Rain of Flood Period over Beijing Area and El Nino Event

Based on the centenary rainfall data in Beijing and El Nino event data and Un El Nino event data (include La Nina event),the relation of the torrential rain and El Nino event was analysed. It is shown that (a) the flood period emerge drought and the number of the equivalent torrential rain day is less than four at the maximum effective year of El Nino event,the flood period emerge flooding and the number of the equivalent torrential rain day is more than four at the maximum efective year of Un Elnino event. (b) the number of the equivalent torrential rain day increases relatively in the next year of the Maximum effective year of El Nino event or next maximum effective year of Un El Nino event. The number of the equivalent torrential rain day reduces relatively in the next year of Un El Nino event or Next maximum effective year of El Nino event.

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