The ability to use PCR-GLOBW in a seasonal forecasting framework as compared to runoff climatology and Re-analysis P-E is investigated:

Candogan-Yossef, N., L.P.H. van Beek, J.C.J. Kwadijk and M.F.P. Bierkens, 2012. Assessment of the potential forecasting skill of a global hydrological model in reproducing the occurrence of monthly flow extremes. Hydrology and Earth System Sciences 16, 4233-4246.