 The paper presents an extended temperature and emissivity separation, TS, algorithm named the Agri TS algorithm for retrieving land surface temperature and emissivity using the advanced geosynchronous radiation imager, AGI, on-board Phonion 4A, which outperforms the official LST and LSE products from MODIS in terms of accuracy and spatial integrity. This article was authored by Wei Hanyu, Jian Chengxia, Shen Linliang, and others.