Model:SoilInfiltrationGreenAmpt

SoilInfiltrationGreenAmpt

Metadata

Also known as	The Landlab SoilInfiltrationGreenAmpt component
Model type	Modular
Model part of larger framework	LandLab
Note on status model
Date note status model

Incorporated models or components:

Spatial dimensions	2D
Spatial extent	Landscape-Scale, Watershed-Scale, Reach-Scale, Patch-Scale
Model domain	Terrestrial, Hydrology
One-line model description	Landlab component that calculates soil infiltration based on the Green-Ampt solution.
Extended model description	For each time step, this component calculates an infiltration rate for a given model location and updates surface water depths. Based on the Green-Ampt method, it follows the form of Julien et al., 1995.

Keywords:

Name	Francis Rengers
Type of contact	Model developer
Institute / Organization
Postal address 1
Postal address 2
Town / City	Golden
Postal code	80400
State	Colorado
Country	United States
Email address	frengers@usgs.gov
Phone
Fax

Name	Jordan Adams
Type of contact	Model developer
Institute / Organization
Postal address 1
Postal address 2
Town / City
Postal code
State
Country	United States
Email address	jordan.adams@colorado.edu
Phone
Fax

Name	Daniel Hobley
Type of contact	Model developer
Institute / Organization
Postal address 1
Postal address 2
Town / City
Postal code
State
Country	United States
Email address
Phone
Fax

Supported platforms	Unix, Linux, Mac OS, Windows
Other platform
Programming language	Python
Other program language
Code optimized
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
Code development status	As is, no updates are provided
When did you indicate the 'code development status'?	2020
Model availability
Source code availability (Or provide future intension)	Through web repository
Source web address	https://github.com/landlab/landlab/blob/master/landlab/components/soil_moisture/infiltrate_soil_green_ampt.py
Source csdms web address
Program license type	BSD or MIT X11
Program license type other
Memory requirements
Typical run time

Describe input parameters	This model expects that the user has downloaded and installed the Landlab modeling framework. It operates on a Landlab RasterModelGrid instance. Other input parameters include: hydraulic_conductivity soil_bulk_density rock_density initial_soil_moisture_content soil_type volume_fraction_coarse_fragments coarse_sed_flag surface_water_minimum_depth soil_pore_size_distribution_index soil_bubbling_pressure wetting_front_capillary_pressure_head
Input format	ASCII
Other input format
Describe output parameters	After infiltration occurs, the component returns an updated 'surface_water__depth' field, as well as an updated 'soil_water_infiltration__depth' field that tracks how much water has been infiltrated into the soil column.
Output format
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	Soil infiltration, as calculated using the Green-Ampt equation.
Describe key physical parameters and equations	hydraulic_conductivity : The soil effective hydraulic conductivity. soil_bulk_density : The dry bulk density of the soil. rock_density : The density of the soil constituent material (i.e., lacking porosity). initial_soil_moisture_content : The fraction of the initial pore space filled with water. soil_type : A soil type to automatically set soil_pore_size_distribution_index and soil_bubbling_pressure, using mean values from Rawls et al., 1992. volume_fraction_coarse_fragments : The fraction of the soil made up of rocky fragments with very little porosity, with diameter > 2 mm. coarse_sed_flag : If this flag is set to true, the fraction of coarse material in the soil column with be used as a correction for phi, the porosity factor. surface_water_minimum_depth : A minimum water depth to stabilize the solutions for surface flood modelling. Leave as the default in most normal use cases. soil_pore_size_distribution_index : An index describing the distribution of pore sizes in the soil, and controlling effective hydraulic conductivity at varying water contents, following Brooks and Corey (1964). Can be set by soil_type. Typically denoted "lambda". soil_bubbling_pressure : The bubbling capillary pressure of the soil, controlling effective hydraulic conductivity at varying water contents, following Brooks and Corey (1964). Can be set by soil_type. Typically denoted "h_b". wetting_front_capillary_pressure_head : The effective head at the wetting front in the soil driven by capillary pressure in the soil pores. If not set, will be calculated by the component from the pore size distribution and bubbling pressure, following Brooks and Corey.
Describe length scale and resolution constraints	This component has been tested on the reach and watershed scale (<= 100 km^2), but can likely run effectively on even larger scales as needed.
Describe time scale and resolution constraints	The component has been tested on event to annual time scales, on a range of resolutions (1 m to 100 m) but would likely run efficiently on even longer time scales and finer resolutions).
Describe any numerical limitations and issues

Describe available calibration data sets	The component is unit tested against known analytical solutions as part of Landlab.
Upload calibration data sets if available:
Describe available test data sets
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://landlab.readthedocs.io/en/latest/landlab.components.greenampt.html
Model forum / discussion board	Please report any issues to: https://github.com/landlab/landlab/issues

Comments

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OpenMI compliant
BMI compliant
WMT component
PyMT component
Is this a data component

Can be coupled with:

Model info

Authors

Francis Rengers

Adams, Hobley

Source code

Go to external source code site

Model citations

Nr. of publications:	1
Total citations:	118
h-index:	1
m-quotient:	0.09

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References

Nr. of publications:	1
Total citations:	118
h-index:	1
m-quotient:	0.09

Featured reference(s)	Open Access Status	Year	Type of Reference	Cited
Rengers, F. K.; McGuire, L. A.; Kean, J. W.; Staley, D. M.; Hobley, D. E. J.; 2016. Model simulations of flood and debris flow timing in steep catchments after wildfire.. Water Resources Research, 526041–6061. 10.1002/2015WR018176	· publishedVersion	2016	reference to source code	118

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