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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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Short summary
The Budyko functions are matched with the complementary evaporation relationship. We show that there is a functional dependence between the Budyko functions and the drying power of the air. Examining the case where potential evaporation is calculated by means of a Priestley–Taylor type equation with a varying coefficient, we show that this coefficient should have a specified value as a function of the Budyko shape parameter and the aridity index.
Articles | Volume 20, issue 12
Hydrol. Earth Syst. Sci., 20, 4857–4865, 2016
https://doi.org/10.5194/hess-20-4857-2016
Hydrol. Earth Syst. Sci., 20, 4857–4865, 2016
https://doi.org/10.5194/hess-20-4857-2016

Research article 09 Dec 2016

Research article | 09 Dec 2016

Matching the Budyko functions with the complementary evaporation relationship: consequences for the drying power of the air and the Priestley–Taylor coefficient

Jean-Paul Lhomme and Roger Moussa

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Short summary
The Budyko functions are matched with the complementary evaporation relationship. We show that there is a functional dependence between the Budyko functions and the drying power of the air. Examining the case where potential evaporation is calculated by means of a Priestley–Taylor type equation with a varying coefficient, we show that this coefficient should have a specified value as a function of the Budyko shape parameter and the aridity index.
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