Leaderboard

For the Emissivity: I used the NDVI threshold method to derive the emissivity, developed bt Sobrino et al. (2004; 2008) and adapted to my study area (land cover/land use classes) here is a detailded document about emissivity methods: https://anonfiles.com/file/aa5097c0b21fe6ebf9abb5261bc33fce For the Land Surface Temperature (LST): I used the Radiative Transfer Equation - RTE (Berk et al. 1989) and the Atmospheric Correction Parameter Calculator (ACPC) to facilitate calculation for the atmospheric transmission, upwelling and downwelling radiances, with uncertaiuies in the inferred surface temperatures by approximately ±2-3 Kelvin degrees (Barsi et al. 2005) http://landsat.gsfc.nasa.gov/atm_corr/ Then, based on the formulaes, I extracted the Emissivity and the LST using the Model Maker in ERDAS. P.S: there is no method that can offer you a precise emissivity, 100%. The methods only offer an estimation for the emissivity and finally, for the LST. P.S: you can also make an account on ERDAS forum and search there for more informations. Good luck !