cal_soilHeatFlux_general

Complex models are available to describe soil heat flux. Because
 soil heat flux is small compared to Rn, particularly when the surface is
 covered by vegetation and calculation time steps are 24 hours or longer,
 a simple calculation procedure is presented here for long time steps,
 based on the idea that the soil temperature follows air temperature.

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_soilHeatFlux_general function

<dl><dt>cs</dt>
<dd>soil heat capacity [MJ m-3 degrees Celsius-1].</dd>
<dt>T1</dt>
<dd>air temperature at time i [degrees Celsius].</dd>
<dt>T0</dt>
<dd>air temperature at time i-1 [degrees Celsius].</dd>
<dt>delta_t</dt>
<dd>length of time interval [day].</dd>
<dt>delta_z</dt>
<dd>effective soil depth [m].</dd></dl>

Arguments

Calculating soil heat flux (G) for general — cal_soilHeatFlux_general

<dl>

<dt>cs</dt>
<dd>soil heat capacity [MJ m-3 degrees Celsius-1].</dd>


<dt>T1</dt>
<dd>air temperature at time i [degrees Celsius].</dd>


<dt>T0</dt>
<dd>air temperature at time i-1 [degrees Celsius].</dd>


<dt>delta_t</dt>
<dd>length of time interval [day].</dd>


<dt>delta_z</dt>
<dd>effective soil depth [m].</dd>

</dl>

cal_soilHeatFlux_general: Calculating soil heat flux (G) for general

Description

Usage

Value

Arguments

References