The structure for unifying multiple modeling alternatives (SUMMA), Version 1.0: Technical Description

M. Clark
B. Nijssen
J. D. Lundquist
D. Kavetski
D. E. Rupp
R. A. Woods
J. E. Freer
E. D. Gutmann
A. W. Wood
L. D. Brekke
J. R. Arnold
D. J. Gochis
R. M. Rasmussen
David G. Tarboton, Utah State University
V. Mahat
G. N. Flerchinger
D. G. Marks

NCAR Technical Note NCAR/TN-514+STR


This note describes the conservation equations and flux parameterizations used in the Structure for Unifying Multiple Modeling Alternatives (SUMMA). The processes considered here include radiation transfer through the vegetation canopy, within- and below-canopy turbulence, canopy interception, canopy transpiration, snow accumulation and ablation, and runoff generation.