中国极端降水与温度关系存在明显季节、区域差异,研究极端降水与温度的相关关系,可为中国极端气候预测与防治工作提供理论依据。选用中国757个气象站点日温资料及降水资料,以90%为极端降水阈值,通过数理统计方法,从季节、经纬度角度研究发现:①中国大陆地区全年极端降水与温度关系增长率符合 Clausius - Clapeyron(C-C)关系,不同区域不同季节适用性不同;②季节上,温度上升 P
The relationship between extreme precipitation and surface temperature greatly varies with season and region-Understanding such relationship is helpful to the prediction and mitigation of extreme climate. Temperature and precipitation records at 757 meteorological stations are used in this study. Extreme precipitation is defined as the 90th percentile of precipitation. Using the mathematical statistics
we found that ① in general the scaling rate of extreme precipitation with surface temperature is determined by the Clausius-Clapeyron (C-C) relationship. However
the scaling rate varies with season and region; ② the scaling rate is greatest in summer; ③ in the longitude direction
the scaling rate seems highest in the region band ranging from 100-110°E
and it decreases towards both sides of this band; in the latitude direction
the scaling rate is higher in the low-mid latitude region than the mid-high latitude region; ④ the seasonality of the scaling rate tightly associated with the monsoon system
and it is strongest in the southeast region; ⑤ there are more stations with the super C-C scaling rate in the continental climate zone.