r.topmodel
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.
r.fill.dir, r.mapcalc, r.topidx, How to run r.topmodel
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: 2006/07/18 19:35:23 $
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