cal_Kr_for_DualKc

It dependent on the soil water depletion
 (cumulative depth of evaporation) from the topsoil
 layer (Kr = 1 when De,i-1 is equal or lesser than REW)

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_Kr_for_DualKc function

<dl><dt>TEW</dt>
<dd>maximum cumulative depth of evaporation (depletion) from
the soil surface layer when Kr = 0 (TEW = total evaporable water)</dd>
<dt>REW</dt>
<dd>cumulative depth of evaporation (depletion) at the end of stage 1
(REW = readily evaporable water), mm</dd>
<dt>De</dt>
<dd>cumulative depth of evaporation (depletion) from the soil surface
layer at the end of day i-1 (the previous day),mm</dd></dl>

Arguments

Dimensionless evaporation reduction coefficient — cal_Kr_for_DualKc

<dl>

<dt>TEW</dt>
<dd>maximum cumulative depth of evaporation (depletion) from
the soil surface layer when Kr = 0 (TEW = total evaporable water)</dd>


<dt>REW</dt>
<dd>cumulative depth of evaporation (depletion) at the end of stage 1
(REW = readily evaporable water), mm</dd>


<dt>De</dt>
<dd>cumulative depth of evaporation (depletion) from the soil surface
layer at the end of day i-1 (the previous day),mm</dd>

</dl>

cal_Kr_for_DualKc: Dimensionless evaporation reduction coefficient

Description

Usage

Value

Arguments

References