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Table 3

Partial correlations of predictors selected for the climate stations for rainfall variable

Predictors	Stations		Gridded locations
Predictors	Vea	Bolgatanga	GRID 1	GRID 6	GRID 9	GRID 12
Surface lifted index	−0.49	−0.52	−0.52	−0.51	−0.50	–
Mean sea level pressure	−0.48	−0.47	−0.51	−0.52	−0.49	−0.63
850 hPa geopotential height	−0.32	−0.33	−0.34	−0.36	−0.34	−0.39
Potential temperature	0.50	0.50	0.53	0.54	0.50	0.69
Relative humidity at 500 hPa height	–	–	–	–	–	−0.31
Near surface-specific humidity	0.63	0.66	0.67	0.67	0.67	–
Mean temperature at 2 m	0.54	0.54	0.57	0.58	0.54	0.70

Predictors	Stations		Gridded locations
Predictors	Vea	Bolgatanga	GRID 1	GRID 6	GRID 9	GRID 12
Surface lifted index	−0.49	−0.52	−0.52	−0.51	−0.50	–
Mean sea level pressure	−0.48	−0.47	−0.51	−0.52	−0.49	−0.63
850 hPa geopotential height	−0.32	−0.33	−0.34	−0.36	−0.34	−0.39
Potential temperature	0.50	0.50	0.53	0.54	0.50	0.69
Relative humidity at 500 hPa height	–	–	–	–	–	−0.31
Near surface-specific humidity	0.63	0.66	0.67	0.67	0.67	–
Mean temperature at 2 m	0.54	0.54	0.57	0.58	0.54	0.70