Model:ChiFinder: Difference between revisions
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{{Input - Output description | {{Input - Output description | ||
|Describe input parameters=grid : RasterModelGrid | |Describe input parameters=grid : RasterModelGrid | ||
A landlab RasterModelGrid.<br> | |||
reference_concavity : float<br> | |||
The reference concavity to use in the calculation. | |||
min_drainage_area : float (m**2)<br> | |||
The drainage area down to which to calculate chi. | |||
reference_area : float or None (m**2)<br> | |||
If None, will default to the mean core cell area on the grid. Else, provide a value to use. Essentially becomes a prefactor on the value of chi. | |||
use_true_dx : bool (default False)<br> | |||
If True, integration to give chi is performed using each value of node spacing along the channel (which can lead to a quantization effect, and is not preferred by Taylor & Royden). If False, the mean value of node spacing along the all channels is assumed everywhere. | |||
clobber : bool (default False)<br> | |||
Raise an exception if adding an already existing field. | |||
|Input format=ASCII | |Input format=ASCII | ||
|Describe output parameters= | |Describe output parameters="channel__chi_index": | ||
{ | |||
"dtype": float, | |||
"intent": "out", | |||
"optional": False, | |||
"units": "variable", | |||
"mapping": "node", | |||
"doc": "the local steepness index", | |||
}, | |||
"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": "in", | |||
"optional": False, | |||
"units": "m", | |||
"mapping": "node", | |||
"doc": "Land surface topographic elevation", | |||
}, | |||
"topographic__steepest_slope": | |||
{ | |||
"dtype": float, | |||
"intent": "in", | |||
"optional": False, | |||
"units": "-", | |||
"mapping": "node", | |||
"doc": "The steepest *downhill* slope", | |||
} | |||
|Output format=ASCII | |Output format=ASCII | ||
|Pre-processing software needed?=No | |Pre-processing software needed?=No |
Revision as of 16:16, 31 January 2020
ChiFinder
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Introduction
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