青藏高原东北部寒潮次数时空变化特征研究

时盛博, 张调风, 马占良, 李万志, 杨延华, 杨苏华

Study on variation characteristics of frequency of cold wave processes in the northeastern Qinghai-Tibet Plateau

Shengbo SHI, Tiaofeng ZHANG, Zhanliang MA, Wanzhi LI, Yanhua YANG, Suhua YANG

图4 寒潮平均次数序列突变点及趋势检验

Fig.4 Test chart of the mutation point and trend of the average number of cold wave， annual （a） and spring （b）