Relative water attenuation beneath canopy

Usage

u_b(
  U0,
  macro_state = c(biomass, hm),
  SA_WW = 0.5 * (0.0306/2),
  site_params,
  constants = c(s = 0.0045, gam = 1.13, a2 = 0.2^2, Cb = 0.0025)
)

Arguments

U0

incoming incident water velocity (m/s)

macro_state

vector of named numbers. Must include:

biomass, macroalgae wet weight (g)
hm, algae height (m)

site_params

vector of named numbers. Must include:

hz, total water depth (m)
hc, vertical water column occupied by the canopy (m)
d_top, depth of the top of the canopy beneath the water surface (m)

constants

vector of named numbers defining extra constants for the attenuation submodel. Must include:

s = 0.0045
gam = 1.13
a2 = 0.2^2
Cb = 0.0025

Value

a scalar of relative water attenuation beneath canopy

Examples

examples
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