get_lac_factor

A correction factor for large windfarms with a large array of turbines, to
take into account the depletion of bird density in later rows of the site.

Collision Risk Models for avian fauna (seabird and migratory birds) at
offshore wind farms. The base deterministic model is derived from
Band (2012) <https://tethys.pnnl.gov/publications/using-collision-risk-model-assess-bird-collision-risks-offshore-wind-farms>.
This was further expanded on by Masden (2015) <doi:10.7489/1659-1> and code
used here is heavily derived from this work with input from Dr A. Cook at the
British Trust for Ornithology. These collision risk models are useful for
marine ornithologists who are working in the offshore wind industry, particularly
in UK waters. However, many of the species included in the stochastic collision
risk models can also be found in the North Atlantic in the
United States and Canada, and could be applied there.

Grant Humphries

stochLAB

Stochastic Collision Risk Model

get_lac_factor function

<dl><dt>n_turbines</dt>
<dd>Integer, the number of turbines on the wind farm
(\(T\)).</dd>
<dt>rotor_radius</dt>
<dd>Numeric value, the radius of the rotor (\(R\)), in
metres.</dd>
<dt>avoidance_rate</dt>
<dd>Numeric value within the interval \([0, 1]\). The species
avoidance rate, expressing the probability that a bird flying on a
collision course with a turbine will take evading action to avoid
collision. (\(A\)).</dd>
<dt>avg_prob_coll</dt>
<dd>Numeric value, the average probability of collision
for a single bird transit through a rotor, assuming no avoidance action
(\(p_average\)).</dd>
<dt>avg_prop_operational</dt>
<dd>Numeric value, the average proportion of time
turbines are operational through the year.</dd>
<dt>wf_width</dt>
<dd>Numeric value, the approximate longitudinal width of the
wind farm, in kilometres (\(w\)).</dd></dl>

Arguments

Large array correction factor — get_lac_factor

<dl>

<dt>n_turbines</dt>
<dd>Integer, the number of turbines on the wind farm
(\(T\)).</dd>


<dt>rotor_radius</dt>
<dd>Numeric value, the radius of the rotor (\(R\)), in
metres.</dd>


<dt>avoidance_rate</dt>
<dd>Numeric value within the interval \([0, 1]\). The species
avoidance rate, expressing the probability that a bird flying on a
collision course with a turbine will take evading action to avoid
collision. (\(A\)).</dd>


<dt>avg_prob_coll</dt>
<dd>Numeric value, the average probability of collision
for a single bird transit through a rotor, assuming no avoidance action
(\(p_average\)).</dd>


<dt>avg_prop_operational</dt>
<dd>Numeric value, the average proportion of time
turbines are operational through the year.</dd>


<dt>wf_width</dt>
<dd>Numeric value, the approximate longitudinal width of the
wind farm, in kilometres (\(w\)).</dd>

</dl>

get_lac_factor: Large array correction factor

Description

Usage

Value

Arguments

Examples