【摘要】 综述并阐明了干热风气象灾害在指标类型、时空分布、形成原因、发生环境、危害特征、防御技术等6个方面的内容,干热风危害特点具有明显温度猛增、湿度骤降的突变性和昼夜维持干热天气分不开.气候暖干化是北方现代气候变化的基本特征,气候变暖尤其使极端气温显著升高,气候变干使降水量持续偏少,出现了明显干旱化趋势.干热风发生次数与气候变暖呈显著正相关,与气候变干呈显著反相关.干热风对气候暖干化的响应十分敏感,气候暖干化使干热风发生区域扩大、次数增多、强度增强、危害加重.因此,防御干热风和干旱化危害刻不容缓.更多还原

【Abstract】 In this paper,the types,spatial and temporal distribution,and cause of formation,occurrence condition,and characteristics of damage and prevention techniques of dry-hot wind are summarized.The dry-hot wind is often accompanied with rapid temperature increasing and abrupt humidity decreasing in daytime or in nighttime.This climate warming and drying is the typical features of climate change in the north of China at present.Climate warming causes significant increase in extreme temperature;whereas drying causes constantly decrease in precipitation,which in turn causes a trend of drought.The occurrence of dry-hot wind shows a positive correlation with climate warming,but a negative correlation with climate drying.Dry-hot wind is quite sensitive to climate warming and drying.Overall,climate warming and drying cause an expansion in range of dry-hot wind and increase its frequency and severity,resulting in damage intensifying.It is a great urgency to struggle against the dry-hot wind and drought.更多还原