Table 5 shows the results of statistical evaluation of soil surface moisture values estimated from remote sensing data with observational data of Tabriz University station for 2010 and Khosroshah and Miandoab stations for 2014 in the form of introduced indicators. According to the values shown in the table, in 2010, the LPRM product with the lowest values of MBE, MAE, RMSE, CRMSD and the highest values of R and EF has the best results and AMSRE product shows the weakest results. ESA-CCI product ranks second in 2010 with weaker statistical index values than the LPRM product. In 2014, in both Khosroshah and Miandoab stations, ESA-CCI product shows the best results except R-correlation coefficient. For both stations, the LPRM product has the weakest results and GLDAS product with the highest correlation coefficient among the three products, but, with weaker results of other indicators compared to the ESA-CCI product, is in second place in 2014.

Table 5

The results of statistical indicators for soil surface moisture of remote sensing data with observational data in 2010 and 2014

MBE (%)MAE (%)RMSE (%)EFCRMSDR
Tabriz University Research Farm – 2010 
2010-AMSRE-SM 129.77 9.27 10.98 − 3.07 5.57 − 0.57* 
2010-LPRM-SM 16.38 3.87 5.13 0.11 9.35 0.94** 
2010-ESA-CCI-SM 43.18 4.14 6.39 − 0.38 8.77 0.92** 
Khosrowshah Meteorological Station – 2014 
2014-GLDAS-SM − 5.32 7.09 8.18 0.25 12.71 0.75** 
2014-LPRM-SM − 16.12 16.67 17.93 − 2.55 10.91 0.57* 
2014-ESA-CCI-SM − 0.50 7.04 7.95 0.35 10.51 0.70** 
Miandoab Meteorological Station – 2014 
2014-GLDAS-SM − 5.23 5.23 6.13 − 3.62 5.01 0.75** 
2014-LPRM-SM − 30.97 30.97 31.63 − 125.70 5.21 − 0.61* 
2014-ESA-CCI-SM − 1.28 2.23 2.59 0.15 3.11 0.62* 
MBE (%)MAE (%)RMSE (%)EFCRMSDR
Tabriz University Research Farm – 2010 
2010-AMSRE-SM 129.77 9.27 10.98 − 3.07 5.57 − 0.57* 
2010-LPRM-SM 16.38 3.87 5.13 0.11 9.35 0.94** 
2010-ESA-CCI-SM 43.18 4.14 6.39 − 0.38 8.77 0.92** 
Khosrowshah Meteorological Station – 2014 
2014-GLDAS-SM − 5.32 7.09 8.18 0.25 12.71 0.75** 
2014-LPRM-SM − 16.12 16.67 17.93 − 2.55 10.91 0.57* 
2014-ESA-CCI-SM − 0.50 7.04 7.95 0.35 10.51 0.70** 
Miandoab Meteorological Station – 2014 
2014-GLDAS-SM − 5.23 5.23 6.13 − 3.62 5.01 0.75** 
2014-LPRM-SM − 30.97 30.97 31.63 − 125.70 5.21 − 0.61* 
2014-ESA-CCI-SM − 1.28 2.23 2.59 0.15 3.11 0.62* 

*Correlation is significant at the 0.05 level (1-tailed).**Correlation is significant at the 0.01 level (1-tailed).

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