Weedon, G.P., Gomes, S., Viterbo, P., Shuttleworth, W.J., Blyth, E., Ă–sterle, H. , Adam, J.C., Bellouin, N., Boucher, O. & Best, M. (2011). Creation of the WATCH Forcing Data and Its Use to Assess Global and Regional Reference Crop Evaporation over Land during the Twentieth Century. Journal of Hydrometeorology: Vol 12, No 5.