evapoIntercept: Interception evaporation

In environmentalinformatics-marburg/reset: Remote Sensing-Based Evapotranspiration

Description

Calculate the interception evaporation and related parameters.

Usage

evapoIntercept(rH, alpha = 1.26, delta, gamma = 0.066, rnc)

surfaceWetness(rH)

Arguments

rH	Relative humidity in %.
alpha	numeric. Priestley and Taylor (1972) constant, see potentialEvaporation.
delta	Slope of the saturation vapor pressure curve in kPa / deg C, typically derived from vaporPressureSat.
gamma	numeric. Psychrometric constant, defaults to 0.066 kPa / deg C as proposed by Fisher et al. (2008).
rnc	Net radiation to the canopy in W^2 / m^2.

Value

Interception evaporation in W^2 / m^2.

Functions

• surfaceWetness: Relative surface wetness.

References

Fisher JB, Tu KP, Baldocchi DD (2008) Global estimates of the land–atmosphere water flux based on monthly AVHRR and ISLSCP-II data, validated at 16 FLUXNET sites. Remote Sensing of Environment 112: 901–919, doi:10.1016/j.rse.2007.06.025.

Priestley CHB, Taylor RJ (1972) On the assessment of surface heat flux and evaporation using large scale parameters. Monthly Weather Review 100: 81–92, doi:10.1175/1520-0493(1972)100<0081:OTAOSH>2.3.CO;2.

See Also

surfaceWetness, radNetCanopy.

environmentalinformatics-marburg/reset documentation built on May 16, 2019, 7:54 a.m.