Analysis of High Temperature in Northern Zhejiang in the Summer of 2003 and Its Forcasting

The ralationship between high temperature in northern Zhejiang Province and at height field 500hPa and its index since 1960 is analyzed. The results show that the frequency of high tempereture in northern Zhejiang has closer relation with the westerly trough for the previous period.There are well positive correlation with the convergence belt from the Indian Occan to the Pacific Ocean and negative correlation with the indexs of Eurasia longitude correlation in April. The dates on which Bai-u duration begins and ends are also important indicators to the high temperature in northern Zhejiang. It is very rare that the high temperature of northern Zhejiang in 2003 occurred in larger area and for longer time and earier and stronger and severer disaster.

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