Multimodel GCM-RCM Ensemble-Based Projections of Temperature and Precipitation over West Africa for the Early 21st Century

Table 6

Mean bias and spatial root mean square difference (RMSD) at different sub-domains considered in Figure 1(b) from the ensemble of GCMs (Ens/GCMs), the ensemble of RCMs driven by the same GCMs (Ens/ECHAM5 and Ens/HadCM3), and the ensemble of all RCMs (multi-model ensemble: Ens/RCMs) rainfall with respect to GPCP. Ensembles data are interpolated to GPCP grid. Bias is expressed as percentage of GPCP value while RMSD as mm/day.

Ensembles	Ens/GCMs		Ens/ECHAM5		Ens/HadCM3		Ens/RCMs
Metrics	Bias	RMSD	Bias	RMSD	Bias	RMSD	Bias	RMSD
Sahel	−12.99	0.81	−4.69	0.88	−3.55	0.90	−4.12	0.63
Guinea	11.09	2.11	32.87	3.19	5.14	1.65	19.00	2.11
West Africa	−2.35	1.13	14.25	1.76	4.35	1.01	9.30	1.09