water (version 0.5)

METRIC.Rn: Estimates Net Radiation as in METRIC Model

Description

Estimates Net Radiation as in METRIC Model

Usage

METRIC.Rn(image.DN, WeatherStation, MTL, sat = "auto", thermalband, alb.coeff = "Tasumi", LAI.method = "metric2010", plain = TRUE, DEM, aoi)

Arguments

image.DN
raw imagen in digital counts to evaluate
WeatherStation
Weather Station data, can be a waterWeatherStation object
MTL
Landsat metadata file
sat
Landsat satellite version. "L7" or "L8"
thermalband
Landsat low gain thermalband
alb.coeff
coefficient to transform narrow to broad band albedo. See Details.
LAI.method
Method used to estimate LAI from spectral data. See Details.
plain
Logical. If TRUE surface is assumed plain
DEM
Digital Elevation Model of the study area. Not needed if plain = TRUE
aoi
SpatialPolygon object with limits of Area of interest

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