Model:StreamPowerSmoothThresholdEroder

StreamPowerSmoothThresholdEroder

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

Incorporated models or components:

Spatial dimensions	2D
Spatial extent	Regional-Scale, Landscape-Scale
Model domain	Terrestrial
One-line model description	Compute fluvial erosion using stream power theory with a numerically smoothed threshold
Extended model description	stream_power_smooth_threshold.py: Defines the StreamPowerSmoothThresholdEroder, which is derived from FastscapeEroder. StreamPowerSmoothThresholdEroder uses a mathematically smooth threshold formulation, rather than one with a singularity.

Keywords:	stream power, erosion,

Name	Greg Tucker
Type of contact
Institute / Organization
Postal address 1
Postal address 2
Town / City	Boulder
Postal code	80309
State	Colorado
Country	United States
Email address	gtucker@colorado.edu
Phone
Fax

Supported platforms	Unix, Linux, Mac OS, Windows
Other platform
Programming language	Python
Other program language
Code optimized	Single Processor
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development	2016
Does model development still take place?	No
If above answer is no, provide end year model development	2020
Code development status	Only maintenance
When did you indicate the 'code development status'?	2020
Model availability	As code
Source code availability (Or provide future intension)	Through web repository
Source web address	https://github.com/landlab/landlab/tree/master/landlab
Source csdms web address
Program license type	BSD or MIT X11
Program license type other
Memory requirements
Typical run time

Describe input parameters	[[Describe input parameters model::grid : ModelGrid A grid. K_sp : float, array, or field name K in the stream power equation (units vary with other parameters). m_sp : float, optional m in the stream power equation (power on drainage area). n_sp : float, optional, ~ 0.5<n_sp<4. n in the stream power equation (power on slope). NOTE: NOT PRESENTLY HONORED BY StreamPowerSmoothThresholdEroder (TODO) threshold_sp : float (TODO: array, or field name) The threshold stream power. discharge_field : float, field name, or array, optional Discharge [L^2/T]. The default is to use the grid field 'drainage_area'. To use custom spatially/temporally varying rainfall, use 'water__unit_flux_in' to specify water input to the FlowAccumulator and use "surface_water__discharge" for this keyword argument. erode_flooded_nodes : bool (optional) Whether erosion occurs in flooded nodes identified by a depression/lake mapper (e.g., DepressionFinderAndRouter). When set to false, the field flood_status_code* must be present on the grid (this is created by the DepressionFinderAndRouter). Default True.]]
Input format	ASCII
Other input format
Describe output parameters	"drainage_area": { "dtype": float, "intent": "in", "optional": False, "units": "m**2", "mapping": "node", "doc": "Upstream accumulated surface area contributing to the node's discharge", } "flow__link_to_receiver_node": { "dtype": int, "intent": "in", "optional": False, "units": "-", "mapping": "node", "doc": "ID of link downstream of each node, which carries the discharge", } "flow__receiver_node": { "dtype": int, "intent": "in", "optional": False, "units": "-", "mapping": "node", "doc": "Node array of receivers (node that receives flow from current node)", } "flow__upstream_node_order": { "dtype": int, "intent": "in", "optional": False, "units": "-", "mapping": "node", "doc": "Node array containing downstream-to-upstream ordered list of node IDs", } "topographic__elevation": { "dtype": float, "intent": "inout", "optional": False, "units": "m", "mapping": "node", "doc": "Land surface topographic elevation", }
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
Describe key physical parameters and equations
Describe length scale and resolution constraints
Describe time scale and resolution constraints
Describe any numerical limitations and issues

Describe available calibration data sets
Upload calibration data sets if available:
Describe available test data sets
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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	https://landlab.github.io
Model forum / discussion board	https://github.com/landlab/landlab/issues

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OpenMI compliant	Not yet"Not yet" is not in the list (Yes, No but planned, No but possible, No not possible) of allowed values for the "Code openmi compliant or not" property.
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WMT component	Not yet"Not yet" is not in the list (Yes, In progress, No but possible, No not possible) of allowed values for the "Code CMT compliant or not" property.
PyMT component	Not yet"Not yet" is not in the list (Yes, In progress, No but possible, No not possible) of allowed values for the "Code PyMT compliant or not" property.
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Greg Tucker

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