Development of Intensity-Duration-Frequency curves at ungauged sites: risk management under changing climate

Geoscience Letters

Official Journal of the Asia Oceania Geosciences Society (AOGS)

Table 2 Percentage difference between existing and WRF/ERA40 derived IDF curves: Ipoh Station

Ipoh station (1961–1990)	Duration (Min)	Return period (year)
Ipoh station (1961–1990)	Duration (Min)	2	5	10	20	50	100
[(IDF)_Existing – (IDF)_WRF/ERA40]/(IDF)_Existing (%)	360	60	51	47	44	41	41
	720	48	40	39	37	34	35
	1080	46	38	37	35	32	32
	1440	42	35	36	35	34	34
Average%-age difference		49	41	40	38	35	41