4.2 Comparison of estimated and observed Groundwater variations
To validate results obtained from the GRACE-GLDAS groundwater
variations, comparison of estimated groundwater variations with observed
groundwater variations are presented in figure 9.
[CHART]
Figure 9 Comparison of GWS observed and GWSGRACE-GLDAS
[CHART]
Figure 10 Correlation between GWS observed and GWSGRACE-GLDAS
The coefficient of determination (R2) and coefficient
of correlation (R) of observed groundwater variations and analysed
groundwater variations are estimated as 0.6833 and 0.827 respectively.
As compared to estimation of other methods the integrated approach is
more suitable for searching ground water storage in plain region of the
globe.