Diurnal Variation Characteristics of Raindrop Size Distribution Observed by a Parsivel² Disdrometer in the Ili River Valley

Table 1

Mean values of R, D_m, , μ, and Λ for the five rainfall rate classes at different time periods of the day.

	Class (mm·h^−1)	No. of 1-min samples	R (mm·h^−1)	Dm (mm)	( in mm^−1·m^−3)	μ	Λ (mm^−1)
02–07 LST	0.1 ≤ R < 0.5	1419	0.26	0.78	3.77	14.43	26.40
	0.5 ≤ R < 1	602	0.70	0.89	3.95	10.93	18.94
	1 ≤ R < 2	453	1.43	1.00	4.00	9.89	16.02
	2 ≤ R < 5	387	3.01	1.24	3.90	8.06	11.88
	R ≥ 5	78	8.68	1.62	3.82	5.53	6.69
08–13 LST	0.1 ≤ R < 0.5	1634	0.27	0.84	3.62	12.44	21.24
	0.5 ≤ R < 1	885	0.71	0.96	3.76	8.94	14.44
	1 ≤ R < 2	642	1.43	1.08	3.83	6.99	11.12
	2 ≤ R < 5	493	2.93	1.27	3.81	4.54	7.37
	R ≥ 5	55	7.54	1.71	3.68	6.12	6.65
14–19 LST	0.1 ≤ R < 0.5	2755	0.26	0.92	3.38	13.36	21.14
	0.5 ≤ R < 1	1286	0.72	1.08	3.57	9.42	14.08
	1 ≤ R < 2	1245	1.44	1.22	3.66	7.30	10.69
	2 ≤ R < 5	996	3.13	1.48	3.60	5.97	7.71
	R ≥ 5	686	11.77	2.18	3.33	5.62	5.41
20-01 LST	0.1 ≤ R < 0.5	2614	0.26	0.89	3.47	13.28	21.18
	0.5 ≤ R < 1	1544	0.73	0.98	3.72	9.28	14.86
	1 ≤ R < 2	1439	1.44	1.13	3.75	6.88	10.71
	2 ≤ R5	1283	2.99	1.32	3.77	5.21	7.89
	R ≥ 5	422	10.09	1.75	3.70	5.14	6.00