Availability of meteorological, land surface and other related data is always bottleneck for development of research and evidence based policy formulations. Today, I came across with interesting efforts by CGIAR, to provide climate, agriculture, and food security related data. I think this is an interesting source to fill the data gap we have in applied hydrology. Anyway, try wondering around this webpage (link). Also, they have downloading service for spatially downscaled GCC data.