Evaluation and Correction of Quantitative Precipitation Forecast by Storm-Scale NWP Model in Jiangsu, China

Table 1

Mean forecast performances based on standard measurements of the original and the corrected ARPS for lead times from 1 h to 6 h for five heavy rain events.

	Event 1	Event 2	Event 3	Event 4	Event 5
	ARPS/Corrected-ARPS	ARPS/Corrected-ARPS	ARPS/Corrected-ARPS	ARPS/Corrected-ARPS	ARPS/Corrected-ARPS
1 h	0.28/0.44	0.29/0.43	0.28/0.51	0.27/0.53	0.10/0.37
2 h	0.28/0.36	0.28/0.37	0.30/0.40	0.36/0.47	0.17/0.27
3 h	0.27/0.35	0.27/0.34	0.28/0.35	0.37/0.43	0.19/0.25
4 h	0.26/0.34	0.24/0.32	0.26/0.29	0.34/0.38	0.18/0.23
5 h	0.29/0.37	0.25/0.29	0.19/0.23	0.32/0.36	0.17/0.21
6 h	0.29/0.36	0.22/0.26	0.19/0.23	0.28/0.31	0.20/0.23
	Event 1	Event 2	Event 3	Event 4	Event 5
	ARPS/Corrected-ARPS	ARPS/Corrected-ARPS	ARPS/Corrected-ARPS	ARPS/Corrected-ARPS	ARPS/Corrected-ARPS
1 h	12.15/2.89	10.26/2.89	12.63/2.79	14.91/2.74	12.81/3.15
2 h	6.76/3.23	5.88/2.88	6.75/2.77	6.14/2.61	6.71/3.11
3 h	6.67/3.48	4.39/2.32	4.93/2.33	3.83/1.97	4.50/2.32
4 h	6.19/3.43	4.05/2.42	4.94/2.51	3.36/1.92	3.66/2.06
5 h	5.24/3.26	3.76/2.37	5.14/2.78	3.12/2.02	2.80/1.78
6 h	4.47/2.77	3.40/2.07	4.22/2.26	2.90/1.88	2.08/1.31
MAE (mm)
	Event 1	Event 2	Event 3	Event 4	Event 5
	ARPS/Corrected-ARPS	ARPS/Corrected-ARPS	ARPS/Corrected-ARPS	ARPS/Corrected-ARPS	ARPS/Corrected-ARPS
1 h	2.26/0.62	2.52/0.76	2.07/0.57	1.41/0.27	1.22/0.31
2 h	1.27/0.70	1.53/0.84	0.96/0.57	0.64/0.30	0.65/0.32
3 h	1.21/0.71	1.42/0.84	0.84/0.58	0.48/0.28	0.45/0.26
4 h	1.20/0.73	1.32/0.91	1.09/0.63	0.45/0.29	0.39/0.24
5 h	1.08/0.73	1.39/0.97	0.88/0.67	0.43/0.30	0.37/0.25
6 h	0.99/0.67	1.36/0.94	0.84/0.63	0.42/0.31	0.34/0.23
RMSE (mm)
	Event 1	Event 2	Event 3	Event 4	Event 5
	ARPS/Corrected-ARPS	ARPS/Corrected-ARPS	ARPS/Corrected-ARPS	ARPS/Corrected-ARPS	ARPS/Corrected-ARPS
1 h	4.29/1.53	4.83/2.00	3.95/1.48	2.76/0.70	2.97/1.05
2 h	3.12/1.78	3.84/2.22	2.66/1.61	1.47/0.76	1.99/1.10
3 h	3.14/1.80	3.80/2.25	2.57/1.69	1.24/0.76	1.55/0.92
4 h	3.06/1.85	3.56/2.44	3.01/1.76	1.18/0.79	1.39/0.90
5 h	2.79/1.85	3.69/2.53	2.57/1.86	1.10/0.79	1.28/0.93
6 h	2.54/1.63	3.63/2.40	2.44/1.69	1.12/0.84	1.15/0.82