water (version 0.5)

netRadiation: Estimates net radiation

Description

This function estimates net radiation considering a surface radiation balance. Equations use the information from the image, in addition of measurements of actual vapor pressure and altitude.

Usage

netRadiation(LAI, albedo, Rs.inc, Rl.inc, Rl.out)

Arguments

LAI

raster layer with leaf area index. See LAI()

albedo

broadband surface albedo. See albedo()

Rs.inc

incoming short-wave radiation

Rl.inc

incomin long-wave radiation

Rl.out

outgoing long-wave radiation

References

R. G. Allen, M. Tasumi, and R. Trezza, "Satellite-based energy balance for mapping evapotranspiration with internalized calibration (METRIC) - Model" Journal of Irrigation and Drainage Engineering, vol. 133, p. 380, 2007