Ns. Raghuwanshi et Ww. Wallender, CONVERTING FROM PAN EVAPORATION TO EVAPORATION, Journal of irrigation and drainage engineering, 124(5), 1998, pp. 275-277
Evapotranspiration is an essential component of the hydrologic cycle,
and its accurate estimation is necessary for many hydrologic studies.
Via the pan coefficient (Kp), pan evaporation data are widely used to
estimate grass reference crop evapotranspiration (ETo). An equation fo
r predicting Kp that includes both categorical (wind run and relative
humidity) and quantitative (fetch length) data was developed using the
indicator regression approach. The developed equation predicted Kp va
lues better than the existing equations.