The Hydrological Analysis Measurements of Rainfall and Evaporation

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Date
1962
Authors
McCulloch J.S.G
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Abstract
Evaporation pans throughout East and Central Africa tend to respond in different ways in different meteorological environments. Therefore while pan records at one site are as consistent as can be expected from an instrument subject to so many sources of variation, such as type of pan, animal interference, splash, etc., the Penman estimate of open water evaporation has generally been accepted as the yardstick against which the performance of pans is judged. Mean monthly ratios of Penman/Pan are therefore presented in Table XX, and it is clear that a slight seasonal trend exists, the ratio being smallest in the driest months.
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East African Agricultural And Forestry Journal, XXVII (Specials Issue), p. 64-67