cal_soilSurfaceToMeanCanopyFlow

the resistance between the soil surface and the mean canopy flow (s m-1)

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_soilSurfaceToMeanCanopyFlow function

<dl><dt>h</dt>
<dd>the plant height(m)</dd>
<dt>nK</dt>
<dd>the eddy diffusivity extinction coefficient (taken as 2)</dd>
<dt>Kh</dt>
<dd>eddy diffusivity at the canopy top(m2/s)</dd>
<dt>zs0</dt>
<dd>is the soil surface roughnesslength (m). Note: for flat, tilled land, zs0 can be taken as 0.004 m.</dd>
<dt>z0</dt>
<dd>the crop roughness length (m)</dd>
<dt>d</dt>
<dd>zero plane displacement height (m)</dd></dl>

Arguments

Calculating soil surface to mean canopy flow — cal_soilSurfaceToMeanCanopyFlow

<dl>

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


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


<dt>Kh</dt>
<dd>eddy diffusivity at the canopy top(m2/s)</dd>


<dt>zs0</dt>
<dd>is the soil surface roughnesslength (m). Note: for flat, tilled land, zs0 can be taken as 0.004 m.</dd>


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


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

</dl>

cal_soilSurfaceToMeanCanopyFlow: Calculating soil surface to mean canopy flow

Description

Usage

Value

Arguments