Deriving intensity–duration–frequency (IDF) curves using downscaled in situ rainfall assimilated with remote sensing data

Geoscience Letters

Official Journal of the Asia Oceania Geosciences Society (AOGS)

Table 1 Comparison of GSMaP and observation (Obs) rainfall statistics at Changi from November to January

	Mean (mm)		Variance (mm²)		Auto-covariance		Probability of dry
	GSMaP	Obs	GSMaP	Obs	GSMaP	Obs	GSMaP	Obs
November
1 h	0.29	0.33	1.54	5.89	1.12	1.15	0.83	0.91
2 h	0.58	0.67	5.44	14.46	3.13	3.33	0.78	0.87
6 h	1.73	2.00	28.87	59.64	5.78	5.56	0.63	0.75
12 h	3.47	3.99	79.74	129.99	5.39	5.26	0.49	0.61
24 h	6.93	7.99	170.26	273.04	13.95	13.84	0.35	0.37
December
1 h	0.40	0.41	1.88	6.29	1.48	1.43	0.82	0.88
2 h	0.82	0.82	6.75	16.84	4.95	5.41	0.78	0.83
6 h	2.38	2.45	47.29	76.94	28.50	26.81	0.67	0.71
12 h	4.75	4.91	148.23	204.34	73.41	69.87	0.55	0.59
24 h	9.51	9.82	418.21	499.78	170.38	165.32	0.36	0.39
January
1 h	0.31	0.32	2.24	4.32	1.85	2.00	0.88	0.91
2 h	0.61	0.63	8.30	12.64	6.01	5.79	0.85	0.88
6 h	1.84	1.88	56.80	61.94	28.92	26.79	0.77	0.79
12 h	3.68	3.75	166.19	257.82	69.21	62.13	0.69	0.72
24 h	7.36	7.50	460.79	574.29	136.79	144.97	0.57	0.58