Articles | Volume 20, issue 12
https://doi.org/10.5194/hess-20-4857-2016
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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Cited articles

Aminzadeh, M., Roderick, M. L., and Or, D.: A generalized complementary relationship between actual and potential evaporation defined by a reference surface temperature, Water Resour. Res., 52, 385–406, https://doi.org/10.1002/2015WR017969, 2016.
Bouchet, R.: Evapotranspiration réelle et potentielle, signification climatique, IAHS Publ., 62, 134–142, 1963 (in French).
Brutsaert, W.: A generalized complementary principle with physical constraints for land-surface evaporation, Water Resour. Res., 51, 8087–8093, https://doi.org/10.1002/2015WR017720, 2015.
Brutsaert, W. and Stricker, H.: An advection-aridity approach to estimate actual regional evapotranspiration, Water Resour. Res., 15, 443–450, 1979.
Budyko, M. I.: Climate and life, Academic Press, Orlando, FL, 508 pp., 1974.
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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.