estimate_ea

Where humidity data are lacking or are of questionable quality,
 an estimate of actual vapour pressure, ea, can be obtained by assuming
 that dewpoint temperature (Tdew) is near the daily minimum temperature (Tmin).
 This statement implicitly assumes that at sunrise, when the air temperature
 is close to Tmin, that the air is nearly saturated with water vapour and
 the relative humidity is nearly 100 %.

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

estimate_ea function

<dl><dt>Tmin</dt>
<dd>the minimum tem daily.</dd></dl>

Arguments

Estimating missing humidity data — estimate_ea

<dl>

<dt>Tmin</dt>
<dd>the minimum tem daily.</dd>

</dl>

estimate_ea: Estimating missing humidity data

Description

Usage

Value

Arguments

References