Characteristics of Annual and Seasonal Precipitation Variation in the Upstream of Minjiang River, Southwestern China

Table 2

Statistical parameters of seasonal and annual precipitation.

Region or station		Maoxian	Songpan	Wenchuan	Lixian	Heishui	Zipingpu	UMR
Spring	Mean(mm)	132	205	141	183	224	203	186
	Cv	0.21	0.20	0.19	0.19	0.19	0.25	0.15
Summer	Mean(mm)	230	302	239	256	375	647	302
	Cv	0.25	0.17	0.22	0.22	0.19	0.34	0.16
Autumn	Mean(mm)	103	191	116	156	211	279	173
	Cv	0.24	0.23	0.24	0.24	0.22	0.35	0.19
Winter	Mean(mm)	10	22	10	24	18	49	19
	Cv	0.39	0.35	0.52	0.36	0.41	0.33	0.28
Annual	Mean(mm)	475	720	506	620	828	1179	680
	Cv	0.14	0.11	0.13	0.13	0.12	0.20	0.10