
Author  Methodology  Time and region  Result 

Merlin et al., [49]  Based on the relationship between soil evaporative efficiency and soil moisture  NAFE 2006 (OctNov), Yanco, Southeastern Australia  Mean correlation slope between simulated and measured data is 0.94, the most accuracy with an error of 0.012 
Piles et al., [50]  Build model between LST, NDVI, and soil moisture  JanFeb 2010, Murrumbidgee catchment, Yanco, Southeastern Australia  is between 0.14~0.21 and RMSE 0.9~0.17 
Merlin et al., [51]  Downscaling algorithm is derived from MODIS and physicalbased soil evaporative efficiency model  NAFE 2006 (OctNov), Murrumbidgee catchment, Yanco, Southeastern Australia  Overall RMSE is between 1.4%~1.8% v/v 
Merlin et al., [51]  Based on two soil moisture indices EF and AEF  June and August 1990 (Monsoon' 90 experiment), USDAARS WGEW in southeastern Arizona  Total accuracy is 3% vol. for EF and 2% vol. for AEF, and correlation coefficient is 0.66~0.79 for EF and 0.71~0.81 for AEF 
Merlin et al., [52]  Sequential model  NAFE 2006 (OctNov), Yanco, Southeastern Australia  RMSE is −0.062 vol./vol. and the bias is 0.045 vol./vol. 
