Spatial and Seasonal Patterns of Diurnal/Nocturnal Precipitation in China
Temporal and spatial characteristics of diurnal distribution of precipitation is an important influencing fac-tor for evaluation of the effectiveness of water resources in arid and semi-arid region.As diurnal/nocturnal precipitation is spatially complicated,the attributes of diurnal/nocturnal precipitation related to rain intensity,elevation and season are still not fully understood.In this study,spatial and seasonal patterns of diurnal/nocturnal precipitation were investigated through spatial zoning,elevation banding,rain intensity classifying and seasonal comparison in China with climate records of 1951-2019.The results show that the mainland of China can be subdivided into 3 regions with different characteristics of diurnal/nocturnal precipitation in terms of diurnal/nocturnal proportions,i.e.,the Qingzang and adjacent area with typical nocturnal precipitation,the region on the south of Qinling-Huaihe Line with typical diurnal precipitation,and the rest north region with generally even diurnal/nocturnal precipitation.The decrease in nocturnal precipitation with altitude is larger than diurnal in the Qingzang Plateau,and the nocturnal precipitation is more typical in medium-high precipitation intensity.Seasonally,month nocturnal precipitation is always larger than that of diurnal year around in the Qingzang,while month diurnal precipitation is larger than nocturnal in south China during April to October.These national patterns of diurnal/nocturnal precipitation in China can be referred in assessing the agriculture and ecology water resource climate as well as flash flood warning.
NETL
NSTL
万方数据
维普
