NAME
r.topmodel - Simulates TOPMODEL which is a physically based hydrologic model.
KEYWORDS
raster
SYNOPSIS
r.topmodel
r.topmodel help
r.topmodel [-i] [basin=string] [elevation=string] [depressionless=string] [direction=string] [belevation=string] [topidx=string] [nidxclass=integer] idxstats=string parameters=string input=string output=string [Qobs=string] [timestep=integer] [idxclass=integer] [--overwrite]
Flags:
- -i
- Input data given for (o/i)
- --overwrite
- Force overwrite of output files
Parameters:
- basin=string
- (i) Basin map created by r.water.outlet (MASK)
- elevation=string
- (i) Elevation map
- depressionless=string
- (o) Depressionless elevation map
- direction=string
- (o) Direction map for depressionless elevation map
- belevation=string
- (o/i) Basin elevation map (MASK applied)
- topidx=string
- (o) Topographic index ln(a/tanB) map (MASK applied)
- nidxclass=integer
- (i) Number of topographic index classes
- Default: 30
- idxstats=string
- (o/i) Topographic index statistics file
- parameters=string
- (i) TOPMODEL Parameters file
- input=string
- (i) Rainfall and potential evapotranspiration data file
- output=string
- (o) Output file
- Qobs=string
- (i) OPTIONAL Observed flow file
- timestep=integer
- (i) OPTIONAL Output for given time step
- idxclass=integer
- (i) OPTIONAL Output for given topographic index class
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
- 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: 2006/07/18 19:35:23 $
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