中国不同气候区高、低温及强降水阈值

Studies on Extreme Temperature and Precipitation Threshold Values in Different Climate Zones of China

基于中国国家气象信息中心提供的2 426套逐日温度和降水观测资料,以气候区划新方案为区划方案,采用分组法、排序法、插值法、正态变换法、平方根变换法、立方根变换法,分不同气候区分别计算了高、低温和强降水逐月阈值。经验证,该研究结果具有一定的气候代表性和可信性,其结果可为极端高、低温和极端暴雨气候事件的实时监测预警服务提供参考依据,同时也可为实时探测数据质量控制提供基本参数。

Using the daily temperature and precipitation data of 2 426 automatic weather stations, based on the climate regionalization of new climatic divisions of China, the extreme high and low temperatures and monthly precipitation monthly threshold values in different climate zones are calculated using six different methods, which are grouping, sorting interpolated, normal distribution transformation, square root transformation and cube root transformation. Comparative analysis shows that the results of the study have certain climate representationve and credibility; it can provide the reference framework for the real-time warning of the extreme temperature and precipitation events. At the same time, it can also provide the basic pa- rameters for the real-time detection data quality control work.