incLWradiation: Calculates long wave incoming radiation

In midraed/water: Actual Evapotranspiration with Energy Balance Models

Description

This function estimates the long wave incoming radiation using the Stefan-Boltzmann equation. In addition, empirical equation of Bastiaanssen (1995) with coefficients developed by Allen (2000) are used to estimate the effective atmospheric emissivity.

Usage

incLWradiation(WeatherStation, DEM, solar.angles, Ts)

Arguments

WeatherStation	Weather Station data
DEM	digital elevation model in meters.
solar.angles	rasterStack with latitude, declination, hour.angle, incidence.hor and incidence.rel. See solarAngles()
Ts	Land surface temperature. See surfaceTemperature()

Author(s)

Guillermo Federico Olmedo

Fonseca-Luengo, David

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

Bastiaanssen W. Regionalization of surface flux densities and moisture indicators in composite terrain: A remote sensing approach under clear skies in Mediterranean climates. Ph.D. dissertation, CIP Data Koninklijke Bibliotheek, Den Haag, The Netherlands, 1995, p273

Allen R. RAPID long-wave radiation calculations and model comparisons Internal report, University of Idaho, Kimberly, Idaho, 2000

See Also

Other net radiation related functions: LAI(), METRICtopo(), SWtrasmisivity(), albedo(), incSWradiation(), netRadiation(), outLWradiation(), soilHeatFlux(), solarAngles(), surfaceTemperature()

midraed/water documentation built on Feb. 20, 2022, 7:30 a.m.