cal_meanCanopyFlowToReferenceLevel

Calculating mean canopy flow to reference level

Supports the calculation of meteorological characteristics in
evapotranspiration research and reference crop evapotranspiration, and offers
three models to simulate crop evapotranspiration and soil water balance in
the field, including single crop coefficient and dual crop coefficient,
as well as the Shuttleworth-Wallace model. These calculations main refer to
Allen et al.(1998, ISBN:92-5-104219-5), Teh (2006, ISBN:1-58-112-998-X), and
Liu et al.(2006) <doi:10.1016/j.agwat.2006.01.018>.

Minguo Liu

simET

Tools for Simulation of Evapotranspiration of Field Crops and
Soil Water Balance

Huimin Yang

cal_meanCanopyFlowToReferenceLevel function

<dl><dt>k</dt>
<dd>the von Karman constant (0.4)</dd>
<dt>u_</dt>
<dd>the friction velocity (m s-1)</dd>
<dt>zr</dt>
<dd>is the reference height (m).the height of the weather station(m).</dd>
<dt>d</dt>
<dd>zero plane displacement height (m)</dd>
<dt>h</dt>
<dd>the plant height(m)</dd>
<dt>nK</dt>
<dd>the eddy diffusivity extinction coefficient (taken as 2)</dd>
<dt>z0</dt>
<dd>the crop roughness length (m)</dd></dl>

Arguments

Calculating mean canopy flow to reference level — cal_meanCanopyFlowToReferenceLevel

<dl>

<dt>k</dt>
<dd>the von Karman constant (0.4)</dd>


<dt>u_</dt>
<dd>the friction velocity (m s-1)</dd>


<dt>zr</dt>
<dd>is the reference height (m).the height of the weather station(m).</dd>


<dt>d</dt>
<dd>zero plane displacement height (m)</dd>


<dt>h</dt>
<dd>the plant height(m)</dd>


<dt>nK</dt>
<dd>the eddy diffusivity extinction coefficient (taken as 2)</dd>


<dt>z0</dt>
<dd>the crop roughness length (m)</dd>

</dl>

cal_meanCanopyFlowToReferenceLevel: Calculating mean canopy flow to reference level

Description

Usage

Value

Arguments