HESS Hydrology and Earth System Sciences HESS Hydrol. Earth Syst. Sci. 1607-7938 Copernicus Publications Göttingen, Germany 10.5194/hess-17-4865-2013 Comment on the application of the Szilagyi–Jozsa advection–aridity model for estimating actual terrestrial evapotranspiration in "Estimating actual, potential, reference crop and pan evaporation using standard meteorological data: a pragmatic synthesis" by McMahon et al. (2013) McMahon T. A. 1 Peel M. C. 1 Szilagyi J. 2 3 Department of Infrastructure Engineering, The University of Melbourne, Parkville, 3010 Victoria, Australia Department of Hydraulic & Water Resources Engineering, Budapest University of Technology and Economics, Budapest, Hungary School of Natural Resources, University of Nebraska-Lincoln, Lincoln, USA 06 12 2013 17 12 4865 4867 Copyright: © 2013 T. A. McMahon et al. 2013 This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/ This article is available from https://hess.copernicus.org/articles/17/4865/2013/hess-17-4865-2013.html The full text article is available as a PDF file from https://hess.copernicus.org/articles/17/4865/2013/hess-17-4865-2013.pdf

In the paper by McMahon et al. (2013, supplementary sections S8 and S19, worked example 8), the Szilagyi–Jozsa advection–aridity model (Szilagyi, 2007; Szilagyi and Jozsa, 2008) was not applied in the worked example as intended by author J. Szilagyi. This commentary seeks to clarify the issue and provide the correct procedure.

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