Also known as
Model type Modular
Model part of larger framework
Note on status model
Date note status model
Incorporated models or components:


Spatial dimensions 2D
Spatial extent Global, Continental
Model domain Terrestrial, Hydrology
One-line model description Global sediment flux and water discharge model.
Extended model description An extension of the WBMplus (WBM/WTM) model. Introduce a riverine sediment flux component based on the BQART and Psi models.

Sediment flux, Global model, Hydrological model,

Name Sagy Cohen
Type of contact Model developer
Institute / Organization CSDMS, University of Colorado
Postal address 1
Postal address 2
Town / City Boulder
Postal code 80309
State Colorado
Country United States
Email address

Supported platforms
Unix, Linux
Other platform
Programming language


Other program language Shell script
Code optimized Multiple Processors
Multiple processors implemented Shared memory
Nr of distributed processors
Nr of shared processors 4
Start year development 2010
Does model development still take place? Yes
If above answer is no, provide end year model development
Code development status Active
When did you indicate the 'code development status'? 2020
Model availability As code
Source code availability
(Or provide future intension)
Through CSDMS repository
Source web address
Source csdms web address
Program license type GPL v2
Program license type other
Memory requirements 9 GB for global simulation at 6 arc-min resolution
Typical run time 3 hours per year for global simulation at 6 arc-min resolution

Describe input parameters depending on configuration, the model can be run with Air temperature and Precipitation only. In the most complex configuration, the model will also need vapor pressure, solar radiation, wind, daily minimum and maximum temperature. Built-in functions allow trading input variables (e.g. use cloud cover instead of solar radiation).
Input format Binary
Other input format RGIS - .gdbc
Describe output parameters The WBMplus model can output any variables used for the water balance and transport calculations. WBMsed unique output are: sediment-flux, over-bank water discharge, and all the BQART parameters.
Output format Binary
Other output format RGIS - .gdbc and conversion to NetCDF
Pre-processing software needed? No
Describe pre-processing software
Post-processing software needed? No
Describe post-processing software
Visualization software needed? Yes
If above answer is yes ESRI
Other visualization software VisIt

Describe processes represented by the model see: Sagy Cohen, Albert J. Kettner, James P.M. Syvitski, Balazs M. Fekete, WBMsed, a distributed global-scale riverine sediment flux model: Model description and validation, Computers and Geosciences, ISSN 0098-3004, 10.1016/j.cageo.2011.08.011.
Describe key physical parameters and equations [[Describe key physical parameters::The BQART equation:

Qs=ϖBQ¯0.31A0.5RT for T⩾2∘C Qs=2ϖBQ¯0.31A0.5R for T<2∘C

Qs - aver. sediment flux (kg/s) ϖ - coefficient of proportionality (kg s−1 km−2 °C−1) (=0.02) B - =L(1−Te) Eh, Te is the trapping efficiency of a reservoir or lake, L is lithology and Eh is human erosivity factor. Q - avr. water discharge (m3/s) - [calculated by a WBMplus module] A - basin area (km) R - max. relief (km) T - avr. temperature]]

Describe length scale and resolution constraints Available datasets are for global and continental domains. Realistic high-res simulations for global scale is 6 arc-min and for continental 3 arc-min. Higher resolution datasets are available for both (e.g. 15 arc-sec for Europe).
Describe time scale and resolution constraints It simulate at daily time-steps. Maximum available datasets time-span is between 1901-present.
Describe any numerical limitations and issues

Describe available calibration data sets
Upload calibration data sets if available:
Describe available test data sets Extensive input dataset is available on the CSDMS HPCC (beach) at '/scratch/ccny/RGISarchive' and '/scratch/saco2635/RGISarchiveCSDMS'.
Upload test data sets if available:
Describe ideal data for testing

Do you have current or future plans for collaborating with other researchers?
Is there a manual available? Yes
Upload manual if available: Media:WBMsed manual2-lmf.doc, Media:WBMsed.v2 manual.pdf
Model website if any
Model forum / discussion board Model version 2 is available.

This part will be filled out by CSDMS staff

OpenMI compliant No but possible
BMI compliant No but possible
WMT component No not possible
PyMT component
Is this a data component
DOI model 10.1594/IEDA/100178
For model version 30-03-03
Year version submitted 2012
Link to file
DOI model 10.5281/zenodo.7012896
For model version v4.4.1
Year version submitted 2022
Link to file
Can be coupled with:
Model info

Nr. of publications: 13
Total citations: 730
h-index: 8
m-quotient: 0.67

Link to this page




Nr. of publications: 13
Total citations: 730
h-index: 8
m-quotient: 0.67

Featured publication(s)YearModel describedType of ReferenceCitations
Cohen, Sagy; Kettner, Albert J.; Syvitski, James P.M.; Fekete, Balázs M.; 2013. WBMsed, a distributed global-scale riverine sediment flux model: Model description and validation. Computers &amp; Geosciences, 53, 80–93. 10.1016/j.cageo.2011.08.011
(View/edit entry)
2013 WBMsed

Model overview

Cohen, S.; 2012. WBMsed, verion 30-03-03.. , , 10.1594/IEDA/100178
(View/edit entry)
2012 WBMsed

Source code ref.

See more publications of WBMsed



Input Files