Comparison of Two Simulation Methods of the Temperature Vegetation Dryness Index (TVDI) for Drought Monitoring in Semi-Arid Regions of China. - Lingtong Du; Naiping Song; Ke Liu; Jing Hou; Yue Hu; Yuguo Zhu; Xinyun Wang; Lei Wang; Yige Guo (Remote. Sens., 2017)