Monitoring groundwater storage changes in the highly seasonal humid tropics: Validation of GRACE measurements in the Bengal Basin
نویسندگان
چکیده
ion for dry-season irrigation and wet-season (monsoonal) recharge. We show that 20 GRACE (CSR, GRGS) datasets of recent (2003 to 2007) groundwater storage changes 21 (ΔGWS) correlate well (r=0.77 to 0.93, p-value <0.0001) with in situ borehole records from a 22 network of 236 monitoring stations and account for 44% of the total variation in terrestrial 23 water storage (ΔTWS); highest correlation (r=0.93, p-value <0.0001) and lowest root mean 24 square error (<4 cm) are realized using a spherical harmonic product of CSR. Changes in 25 surface water storage estimated from a network of 298 river gauging stations and soil26 moisture derived from Land Surface Models explain 22% and 33% of ΔTWS respectively. 27
منابع مشابه
Monitoring groundwater storage changes in the highly 1 seasonal humid tropics : validation of GRACE measurements 2 in the Bengal Basin
ion for dry-season irrigation and wet-season (monsoonal) recharge. We show that 20 GRACE (CSR, GRGS) datasets of recent (2003 to 2007) groundwater storage changes 21 (ΔGWS) correlate well (r=0.77 to 0.93, p-value <0.0001) with in situ borehole records from a 22 network of 236 monitoring stations and account for 44% of the total variation in terrestrial 23 water storage (ΔTWS); highest correlati...
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