BT                      At-Sensor Temperature or brightness temperature
E_Skokovic              Land Surface Emissivity according to Skokovic
                        et al. 2014
E_Sobrino               Land Surface Emissivity according to Sobrino et
                        al. 2008
E_Valor                 Land Surface Emissivity according to Valor and
                        Caselles 1996
E_VandeGriend           Land Surface Emissivity according to Van de
                        Griend and Owe 1993
E_Yu                    Land Surface Emissivity according to Yu et al.
                        2014
MWA                     Mono window algorithm
NDVI                    NDVI
Pv                      Proportion of vegetation or fractional
                        vegetation cover
RTE                     Radiative transfer equation method
SCA                     Single channel algorithm
SWA                     Split-window algorithm
Ta                      Mean atmospheric temperature
tau                     Atmospheric transmittance calculation
