Model:SoilInfiltrationGreenAmpt

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SoilInfiltrationGreenAmpt


Metadata

Also known as The Landlab SoilInfiltrationGreenAmpt component
Model type Modular
Model part of larger framework LandLab
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:


First name Francis
Last name 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


First name Jordan
Last name 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


First name Daniel
Last name 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


This part will be filled out by CSDMS staff

OpenMI compliant
BMI compliant
WMT component
PyMT component
Is this a data component
Can be coupled with:
Model info
Francis Rengers
Adams, Hobley
Nr. of publications: 1
Total citations: 48
h-index: 1
m-quotient: 0.17
Qrcode SoilInfiltrationGreenAmpt.png
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Introduction

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References




Nr. of publications: 1
Total citations: 48
h-index: 1
m-quotient: 0.17



Featured publication(s)YearModel describedType of ReferenceCitations
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, 52, 6041–6061. 10.1002/2015WR018176
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2016 KWAVE
SoilInfiltrationGreenAmpt

Source code ref.

48
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