## NAME

r.topmodel

## DESCRIPTION

r.topmodel simulates TOPMODEL which is a physically based hydrologic model.

Note: (i) means input; (o) means output; (o/i) means input or output

The -i flag indicates that input data are given for (o/i). Without this flag, all inputs (i) and intermediate outputs (o/i) should be given. For example, [belevation] map will be created from [elevation] and [basin] in every run. However, given the same [elevation] and [basin], [belevation] output will be the same all the time, so r.topmodel can directly take [belevation] as an input with this flag to save time.

### Selected Parameters:

depressionless map is created as follows:

      r.fill.dir input=elevation elev=depressionless dir=direction type=grass

  This option can be omitted if [elevation] map is already depressionless.

belevation map is created from [elevation] with [basin] mask applied:

      r.mapcalc "belevation = if(basin == 0 || isnull(basin), null(), elevation)"

topidx map is created as follows:

      r.topidx input=elevation output=topidx

Qobs
  Compare simulated flows with observed flows and calculate model efficiency.

## SEE ALSO

r.fill.dir, r.mapcalc, r.topidx, How to run r.topmodel

## AUTHORS

Main algorithm sources are rewritten in C based on TMOD9502.FOR.
Thanks to Keith Beven.

GRASS port by Huidae Cho
Hydro Laboratory, Kyungpook National University, South Korea

Last changed: $Date: 2008-05-16 21:09:06 +0200 (Fri, 16 May 2008) $

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