Model:DLBRM

DLBRM

Also known as
Model type	Single
Model part of larger framework
Note on status model
Date note status model

Incorporated models or components:

Spatial dimensions	2D
Spatial extent	Watershed-Scale
Model domain	Hydrology
One-line model description	Distributed Large Basin Runoff Model
Extended model description	The DLBRM is a distributed, physically based, watershed hydrology model that subdivides a watershed into a 1 km2 grid network and simulates hydrologic processes for the entire watershed sequentially.

Keywords:	basins, fluvial morphodynamics, pollutants,

Supported platforms	Unix, Linux, Windows
Other platform
Programming language
Other program language	Fortran95
Code optimized	Single Processor
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development
Does model development still take place?	No
If above answer is no, provide end year model development	2010
Code development status
When did you indicate the 'code development status'?
Model availability	As code
Source code availability (Or provide future intension)	Through web repository
Source web address	http://www.glerl.noaa.gov/wr/lbrmexamples.html
Source csdms web address
Program license type	Other
Program license type other	--
Memory requirements	All memory is dynamically sized on the basis of the number of cells in the watershed, so memory requirements are scaled with the size of the watershed.
Typical run time

Describe input parameters	For every cell in the watershed grid, daily precipitation and air temperature, solar isolation, elevation, slope, flow direction, land use, depths (cm) of USZ (Upper Soil Zone) and LSZ (Lower Soil Zone), available water capacity (%) of USZ and LSZ, soil texture, permeability (cm/h) of USZ and LSZ, Manning's coefficient values, and daily flows (Changsheng He and Thomas E. Croley II, 2007).
Input format	ASCII
Other input format
Describe output parameters	DLBRM output includes, for every cell in the watershed grid, surface runoff to surface storage, infiltration to USZ, ET, ETP, percolation from USZ to LSZ, interflow from LSZ to surface storage, deep percolation from LSZ to groundwater storage, groundwater flow from groundwater storage to surface storage, surface moisture storage, USZ, and LSZ moisture storages, groundwater storage, and lateral flows from storages to adjacent cells for the surface (channel outflow), USZ, LSZ, and groundwater (Changsheng He and Thomas E. Croley II, 2007).
Output format	ASCII
Other output format
Pre-processing software needed?	No
Describe pre-processing software
Post-processing software needed?	No
Describe post-processing software
Visualization software needed?	No
If above answer is yes
Other visualization software

Describe processes represented by the model	Precipitation enters the snowpack, if present, and is then available as snowmelt, depending mainly on air temperature and solar radiation. Snowmelt and rainfall partly infiltrate infiltrate into the soil and partly run off directly to surface storage, depending upon the moisture content of the soil. Infiltration is high if the soil is dry, and surface runoff is high if the soil is saturated. Soil moisture evaporates or is transpired by vegetation, depending on the types of vegetation, the season, solar radiation, air temperature, humidity, and wind speed. The remainder percolates into deeper basin storages that feed surface storage through interflows and groundwater flows. Generally, these supplies are high if the soil and groundwater storages are large. Finally, there is a flow into surface storage from the upstream cell, which is routed, along with all the other flows into surface storage, through the cell into the next downstream cell.
Describe key physical parameters and equations	Croley, T. E., II, and He, C. (2005). “Distributed-parameter large basin runoff model. I: Model development.” J. Hydrol. Eng., 10(3), 173–181.
Describe length scale and resolution constraints
Describe time scale and resolution constraints
Describe any numerical limitations and issues

Describe available calibration data sets	See: Croley, T. E., II, C. He, and D. H. Lee, 2005. Distributed-parameter large basin runoff model II: application. Journal of Hydrologic Engineering, 10(3):182-191. C.He, and Croley, T.E., 2007. Application of a distributed large basin runoff model in the Great Lakes basin. Control Engineering Practice, 15(8): 1001-1011.
Upload calibration data sets if available:
Describe available test data sets	The LBRM model has been applied to 121 large watersheds surrounding the Laurentian Great Lakes since its development in the 1980s.
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?	No
Upload manual if available:
Model website if any	http://www.glerl.noaa.gov/res/Programs/pep/dlbrm/home.html
Model forum / discussion board

Comments

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Can be coupled with:

Model info

Authors

Thomas Croley

Hunter

Source code

Model citations

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Featured publication(s)	Year	Model described	Type of Reference	Citations
Croley, Thomas E.; He, Chansheng; 2005. Distributed-Parameter Large Basin Runoff Model. I: Model Development. Journal of Hydrologic Engineering, 10, 173–181. 10.1061/(ASCE)1084-0699(2005)10:3(173) (View/edit entry)	2005	DLBRM	Model overview	51
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