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Summary: Discussion
Comment on the paper: "Basin hydrologic response relations to
distributed physiographic descriptors and climate" by Karen Plaut
Berger, Dara Entekhabi, 2001. Journal of Hydrology 247, 169182
A. Sankarasubramanian, Richard M. Vogel*
Department of Civil and Environmental Engineering, Tufts University, Medford, MA 02155, USA
Received 23 November 2001; revised 10 January 2002; accepted 1 March 2002
1. Introduction
A basic problem relating to the long-term water
balance involves splitting precipitation P, into runoff
R, and actual evapotranspiration E. Berger and
Entekhabi (2001) showed that the evapotranspiration
efficiency E/Ep (Ep denotes potential evapotranspira-
tion) and the runoff ratio R/P, are related to
physiographic basin features and regional climate
information. Berger and Entekhabi (2001) estimated
actual watershed evapotranspiration E, and runoff R,
at 10 basins across the US, using an equilibrium
distributed hydrologic model. They argue that their
results are preliminary because they are only based on
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