Improvement of TVDI for soil moisture estimation

Abstract

In the paper, we developed a novel method of soil moisture estimation in vegetated area base on the simulation result of Cupid model[1], and it was found that LAI and land surface temperture (Ts) appeared in logarithmic relation rather than linear traditionally TVDI (Temperature Vegetation Dryness Index) assumed. Then the soil moisture in vegetated area was calculated through a look-up table. The validation result shown that R2 of the novel method was better than TVDI.