cal_netLongwaveRadiation

Calculating net longwave radiation Rnl

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_netLongwaveRadiation function

<dl><dt>TKmax</dt>
<dd>maximum absolute temperature during the 24-hour period [K].</dd>
<dt>TKmin</dt>
<dd>minimum absolute temperature during the 24-hour period [K].</dd>
<dt>ea</dt>
<dd>actual vapour pressure [kPa].</dd>
<dt>Rs</dt>
<dd>measured or calculated solar radiation [MJ m-2 day-1].
From cal_solarRadiation().</dd>
<dt>Rso</dt>
<dd>calculated clear-sky radiation [MJ m-2 day-1].
From cal_skySolarRadiation_withas_bs() or cal_skySolarRadiation_withas_elevation().</dd></dl>

Arguments

Calculating net longwave radiation Rnl — cal_netLongwaveRadiation

<dl>

<dt>TKmax</dt>
<dd>maximum absolute temperature during the 24-hour period [K].</dd>


<dt>TKmin</dt>
<dd>minimum absolute temperature during the 24-hour period [K].</dd>


<dt>ea</dt>
<dd>actual vapour pressure [kPa].</dd>


<dt>Rs</dt>
<dd>measured or calculated solar radiation [MJ m-2 day-1].
From cal_solarRadiation().</dd>


<dt>Rso</dt>
<dd>calculated clear-sky radiation [MJ m-2 day-1].
From cal_skySolarRadiation_withas_bs() or cal_skySolarRadiation_withas_elevation().</dd>

</dl>

cal_netLongwaveRadiation: Calculating net longwave radiation Rnl

Description

Usage

Value

Arguments

References