Summary
| Also known as
|
|
| Model type
|
Single
|
| Model part of larger framework
|
|
| Note on status model
|
|
| Date note status model
|
|
basins,
Technical specs
| Supported platforms
|
Unix, Linux, Mac OS, Windows
|
| Other platform
|
|
| Programming language
|
Python
|
| Other program language
|
None (but uses NumPy package)
|
| Code optimized
|
Single Processor
|
| Multiple processors implemented
|
|
| Nr of distributed processors
|
|
| Nr of shared processors
|
|
| Start year development
|
2001
|
| Does model development still take place?
|
Yes
|
| If above answer is no, provide end year model development
|
|
| Code development status
|
|
| When did you indicate the 'code development status'?
|
|
| Model availability
|
As code, As teaching tool
|
Source code availability
(Or provide future intension)
|
Through CSDMS repository
|
| Source web address
|
|
| Source csdms web address
|
|
| Program license type
|
Apache public license
|
| Program license type other
|
|
| Memory requirements
|
Standard
|
| Typical run time
|
Minutes to hours
|
In/Output
| Describe input parameters
|
The input variables for modeling the net flux of shortwave radiation are defined as follows:
Tair = air temperature (deg C)
RH = relative humidity (unitless) (in (0,1))
albedo = surface albedo (unitless) (in (0,1))
dust att. = dust attenuation factor (unitless) (in (0,1))
factor = cloud or canopy cover factor (unitless) (in (0,1))
slope = topographic slope (unitless, m/m) (in (0,Infinity))
aspect = aspect angle (radians) (in (0,1))
The behavior of this component is controlled with a configuration (CFG) file, which may point to other files that contain input data. Here is a sample configuration (CFG) file for this component:
Method code: 1
Method name: Standard
Time step: Scalar 3600.0 (sec)
rho_H2O: Scalar 1000.00000000 (kg/m^3)
Cp_air: Scalar 1005.70001221 (J/kg/K)
rho_air: Scalar 1.26139998 (kg/m^3)
P: Time_series Case5_rain_rates.txt (mm/hr)
T_air: Scalar 20.00000000 (deg C)
T_surf: Scalar -5.00000000 (deg C)
RH: Scalar 0.50000000 (none)
p0: Scalar 1000.00000000 (mbar)
uz: Scalar 3.00000000 (m/s)
z: Scalar 10.00000000 (m)
z0_air: Scalar 0.02000000 (m)
Qn_SW: Scalar 100.00000000 (W/m^2)
Qn_LW: Scalar 10.00000000 (W/m^2)
Save grid timestep: Scalar 60.00000000 (sec)
Save ea grids: 0 Case5_2D-ea.rts (mbar)
Save es grids: 0 Case5_2D-es.rts (mbar)
Save pixels timestep: Scalar 60.00000000 (sec)
Save ea pixels: 0 Case5_0D-ea.txt (mbar)
Save es pixels: 0 Case5_0D-es.txt (mbar)
|
| Input format
|
ASCII, Binary
|
| Other input format
|
|
| Describe output parameters
|
|
| Output format
|
ASCII, Binary
|
| Other output format
|
|
| Pre-processing software needed?
|
Yes
|
| Describe pre-processing software
|
Another program must be used to create the input grids. This includes a D8 flow grid derived from a DEM for the region to be modeled. The earlier, IDL version of TopoFlow can be used to create some of these.
|
| Post-processing software needed?
|
Yes
|
| Describe post-processing software
|
None, except visualization software. Grid sequences saved in netCDF files can be viewed as animations and saved as movies using VisIt.
|
| Visualization software needed?
|
Yes
|
| If above answer is yes
|
|
| Other visualization software
|
VisIt
|
Process
| Describe processes represented by the model
|
|
| Describe key physical parameters and equations
|
|
| Describe length scale and resolution constraints
|
Recommended grid cell size is around 100 meters, but can be parameterized to run with a wide range of grid cell sizes. DEM grid dimensions are typically less than 1000 columns by 1000 rows.
|
| Describe time scale and resolution constraints
|
The basic stability condition is: dt < (dx / u_min), where dt is the timestep, dx is the grid cell size and u_min is the smallest velocity in the grid. This ensures that flow cannot cross a grid cell in less than one time step. Typical timesteps are on the order of seconds to minutes. Model can be run for a full year or longer, if necessary.
|
| Describe any numerical limitations and issues
|
This model/component needs more rigorous testing.
|
Testing
| Describe available calibration data sets
|
This model/component is typically not calibrated to fit data, but is run with a best guess or measured value for each input parameter.
|
| Upload calibration data sets if available:
|
|
| Describe available test data sets
|
Available test data sets:
- Treynor watershed, in the Nishnabotna River basin, Iowa, USA.
- (Two large rainfall events.)
- Small basin in Kentucky.
- Inclined plane for testing.
- Arctic watershed data from Larry Hinzman (UAF).
- See /data/progs/topoflow/3.0/data on CSDMS cluster.
|
| Upload test data sets if available:
|
|
| Describe ideal data for testing
|
Several test datasets are stored on the CSDMS cluster at: /data/progs/topoflow/3.0/data.
|
Other
| Do you have current or future plans for collaborating with other researchers?
|
Collaborators include: Larry Hinzman (UAF), Bob Bolton, Anna Liljedahl (UAF), Stefan Pohl and others
|
| Is there a manual available?
|
Yes
|
| Upload manual if available:
|
|
| Model website if any
|
This site.
|
| Model forum / discussion board
|
|
| Comments
|
About this component:
- This component was developed as part of the TopoFlow hydrologic model, which was originally written in IDL and had a point-and-click GUI. For more information on TopoFlow, please goto: http://csdms.colorado.edu/wiki/Model:TopoFlow.
- When used from within the CSDMS Modeling Tool (CMT), this component has "config" button which launches a graphical user interface (GUI) for changing input parameters. The GUI is a tabbed dialog with a Help button at the bottom that displays HTML help in a browser window.
- This component also has a configuration (CFG) file, with a name of the form: <case_prefix>_channels_diff_wave.cfg. This file can be edited with a text editor.
- The Numerical Python module (numpy) is used for fast, array-based processing.
- This model has an OpenMI-style interface, similar to OpenMI 2.0. Part of this interface is inherited from "CSDMS_base.py".
|
Download statistics
<pbars ytitle=Downloads Title='Monthly Downloads topoflow-meteorology' xlabels=true size=900x200 ymax=10 grid=true box=true cubic=true plots=open xformat=number connected=true angle=90 legend>
,Total downloads: 28
2008 - Jan,0
Feb,0
Mar,0
Apr,0
May,0
Jun,0
Jul,0
Aug,0
Sep,0
Oct,0
Nov,0
Dec,0
2009 - Jan,0
Feb,0
Mar,0
Apr,0
May,0
Jun,0
Jul,0
Aug,0
Sep,0
Oct,0
Nov,0
Dec,0
2010 - Jan,0
Feb,0
Mar,0
Apr,0
May,0
Jun,0
Jul,0
Aug,0
Sep,0
Oct,0
Nov,0
Dec,0
2011 - Jan,0
Feb,1
Mar,2
Apr,0
May,0
Jun,2
Jul,1
Aug,0
Sep,0
Oct,0
Nov,2
Dec,1
2012 - Jan,0
Feb,1
Mar,0
Apr,0
May,1
Jun,0
Jul,1
Aug,1
Sep,3
Oct,0
Nov,0
Dec,0
2013 - Jan,0
Feb,0
Mar,2
Apr,1
May,0
Jun,0
Jul,0
Aug,0
Sep,0
Oct,0
Nov,0
Dec,2
2014 - Jan,1
Feb,0
Mar,0
Apr,0
May,2
Jun,0
Jul,0
Aug,0
Sep,0
Oct,0
Nov,0
Dec,2
2015 - Jan,1
Feb,1
Mar,0
Apr,0
May,0
Jun,0
Jul,0
</pbars>
Introduction
History
Papers
Issues
Help
Input Files
Output Files
Download source code
Template:Download Model
|
