Estimates Net Radiation as in METRIC Model
METRIC.G(image.DN, WeatherStation = WeatherStation, Rn, plain = TRUE, DEM,
aoi)raw imagen in digital counts to evaluate
Weather Station data, can be a waterWeatherStation object
RasterLayer with Net Radiation data in W/m2
Logical. If TRUE surface is assumed plain
Digital Elevation Model of the study area. Not needed if plain = TRUE
SpatialPolygon object with limits of Area of interest
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