A New Method of Analysing Climate Jump and Its Application

On the basis of approaching the current methods of climate jump, being aimed at the faults of those methods, Fisher optimum separation method is introduced and combined with the statistic test of those, thus a new method is produced. By using this method, the climate jumps about drought/flood series for Xi’an, Baoji and Hanzhong areas are studied, respectively. The results show that there exist local and non-local climate jumps in eastern Northwest China