ETo_Hrg

<code>ETo_Hrg</code> returns the value of the evapotranspiration rate from the reference surface.

Calculation of Evapotranspiration by FAO Penman-Monteith equation based on Allen, R. G., Pereira, L. S., Raes, D., Smith, M. (1998, ISBN:92-5-104219-5) "Crop evapotranspiration - Guidelines for computing crop water requirements - FAO Irrigation and drainage paper 56".

Ali Ahani

FAO56

Evapotranspiration Based on FAO Penman-Monteith Equation

ETo_Hrg function

<dl><dt>T_min</dt>
<dd>Optional. A numeric scalar that denotes the daily minimum temperature [C].</dd>
<dt>T_max</dt>
<dd>Optional. A numeric scalar that denotes the daily maximum temperature [C].</dd>
<dt>R_a</dt>
<dd>A numeric scalar denotes the extraterrestrial radiation [\(MJ/(m^2\times day)\)].</dd></dl>

Arguments

<a href="https://www.fao.org/3/x0490E/x0490e00.htm">Allen, R. G., Pereira, L. S., Raes, D., &amp; Smith, M. (1998).
 Crop evapotranspiration - Guidelines for computing crop water requirements - FAO Irrigation and drainage paper 56.
 Fao, Rome, 300(9), D05109.</a>

Reference

Hargreaves Reference Evapotranspiration (ETo) Equation — ETo_Hrg

<dl>

<dt>T_min</dt>
<dd>Optional. A numeric scalar that denotes the daily minimum temperature [C].</dd>


<dt>T_max</dt>
<dd>Optional. A numeric scalar that denotes the daily maximum temperature [C].</dd>


<dt>R_a</dt>
<dd>A numeric scalar denotes the extraterrestrial radiation [\(MJ/(m^2\times day)\)].</dd>

</dl>

<a href='https://www.fao.org/3/x0490E/x0490e00.htm'>Allen, R. G., Pereira, L. S., Raes, D., &amp; Smith, M. (1998).
 Crop evapotranspiration - Guidelines for computing crop water requirements - FAO Irrigation and drainage paper 56.
 Fao, Rome, 300(9), D05109.</a>

ETo_Hrg: Hargreaves Reference Evapotranspiration (ETo) Equation

Description

Usage

Value

Arguments

Reference

Details

See Also

Examples