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

Table 4

Error assessment of interpolated annual rainfall in state plan regions.

Interpolation methods	SPR	MAE	MRE	RMSE
IDW	Northern Beaches	278.23	0.25	346.52	0.42
	Eastern/Inner	244.45	0.25	307.68	0.45
	Western	253.96	0.25	323.46	0.32
Kriging	Northern Beaches	328.30	0.40	422.52	0.32
	Eastern/Inner	332.90	0.30	410.30	0.42
	Western	223.73	0.27	287.36	0.48
ANUDEM	Northern Beaches	280.85	0.25	350.27	0.42
	Eastern/Inner	246.63	0.26	310.56	0.45
	Western	224.22	0.27	288.09	0.45
Spline	Northern Beaches	283.10	0.25	353.04	0.41
	Eastern/Inner	248.35	0.26	312.74	0.45
	Western	222.26	0.27	285.14	0.48