Climatic Characteristics of the Strong Heavy Rain in the Northern China

In this paper, by using the rainfall data during the last 30—40 years, we analysed the climatic characteristics of the very heavy rain in the northern China. It is shown that the heavy rain days in the northern China are less than that in the southern China, but the rain intensity is stronger. The maximum rain of various rain periods exists always in the northern China, most rain days are in midsummer. The maximum of the daily rainfall contributes significantly to the total rainfall of the year, and its annual variation is obvious. Furthermore heavy thunderstorm is often associated with heavy rainfall in the northern China, duration of rain is short and rainfall coverage is small