Spatial Interpolation of Daily Rainfall Data for Local Climate Impact Assessment over Greater Sydney Region

Table 3

Error assessment of interpolated monthly rainfall in state plan regions.

Interpolation methods	SPR	MAE	MRE	RMSE
IDW	Northern Beaches	51.29	0.55	78.94	0.50
	Eastern/Inner	55.06	0.78	77.60	0.48
	Western	49.75	0.73	73.14	0.46
Kriging	Northern Beaches	50.34	0.54	78.32	0.49
	Eastern/Inner	55.95	0.73	83.17	0.42
	Western	37.95	0.55	58.08	0.56
ANUDEM	Northern Beaches	51.78	0.56	79.46	0.49
	Eastern/Inner	48.96	0.58	74.94	0.48
	Western	38.02	0.55	58.20	0.56
Spline	Northern Beaches	52.03	0.56	79.76	0.49
	Eastern/Inner	45.72	0.56	69.41	0.52
	Western	48.61	0.57	36.31	0.56