The estimation of annual run-off from meteorological data in a tropical climate

A modified form of Turc's evapo-transpiration formula is proposed and used to predict annual run-off from large catchments in Malawi. Arising out of this investigation the validity of Penman's conversion factor f as a seasonal factor for large catchments in a tropical climate with a seasonally unbalanced water regime is confirmed.

[1]  H. L. Penman.  Evaporation over the British Isles , 1950 .

[2]  H. L. Penman.  Natural evaporation from open water, bare soil and grass , 1948, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[3]  C. W. Thornthwaite.  An approach toward a rational classification of climate. , 1948 .