关键词: 高温干旱复合, 特征, 信息扩散理论, 危险性

Abstract: Based on the daily temperature, precipitation data and other factors of 28 meteorological stations in southwest of Shandong province from March to October, 1991 to 2022, the regional high temperature events, drought events, compound high temperature and drought events were identified, according to the classification of regional high temperature weather process, monitoring and assessment method of regional drought process, the characteristics and hazard dangers were analyzed. The results showed that: (1)the frequency of regional high temperature events increased significantly, the start time was significantly advanced, the intensity increased weakly. Regional drought events had recurrent features with increased frequency and a weakening trend in intensity. Compound high temperature and drought events were concentrated in June-July with increased frequency and earlier start time. (2)The dangerous areas of high temperature were basically with intensity areas, decreasing from west to east, the highest dangerous areas were distributed in west. Drought danger areas were essentially intensity zones, decreasing from south to north, with the highest danger areas located in the south. Dangerous regions of compound heat and drought were more similar to dangerous regions of heat, decreasing from west to east. (3)The risk of high temperature events, drought events and compound events will be occurring greater with the climate warming in southwest of Shandong province.

Key words: Compound high temperature and drought, Characteristics, Information diffusion theory, Dangerous