*2.6.2 Historical discharge representation*

Simulated discharge of the PCR-GLOBWB driven with five climate models was compared with CRU observed discharge to check the model's performance for the reference period (**Figure 3**). **Figure 3** shows the agreement between CRU observed discharge and the climate models is good for the Niger and Hadejia, yet there are some differences in representing high flow periods. For the Yobe and Jamaare rivers,

#### **Figure 3.**

*The long-term mean annual dynamics of river discharge simulated with PCR-GLOBWB driven by the five climate models outputs over the reference period 1971–2000 for the four case study rivers.*

the seasonal pattern of observed discharge dynamics was well captured; however, the results differ more distinctly in the representation of high flow periods. Nonetheless, these results are still agreeable, considering the small absolute numbers of discharge in these basins.
