Validation of Terrestrial Water Storage Change Estimates Using Hydrologic Simulation
Journal of Water Resources and Ocean Science
Volume 3, Issue 1, February 2014, Pages: 5-9
Received: Feb. 25, 2014;
Published: Mar. 30, 2014
Views 3659 Downloads 182
Sang-Il Lee, Department of Civil and Environmental Engineering, Dongguk University, Seoul, South Korea
Jae Young Seo, Department of Civil and Environmental Engineering, Dongguk University, Seoul, South Korea
Sang Ki Lee, Department of Civil Engineering, University of Idaho, Boise, ID, USA
New methods estimating the amount of water storage on Earth have evolved over the years. One of them utilizes the gravitational field variation observed from the GRACE satellite. Compared to conventional methods such as water balance analysis, the method makes it simple and straightforward to obtain the terrestrial water storage change (TWSC). Previous studies show that there is a discrepancy between GRACE-based and water balance-based estimates especially in wet periods. Along with precipitation and evapotranspiration, it is common that runoff data needed for the water balance analysis are obtained from GLDAS (Global Land Data Assimilation System). In this study, GLDAS runoff data are replaced with hydrologic simulation results with such anticipation that local geomorphologic and hydrologic characteristics can be better incorporated. In an application to a relatively small basin during a wet period, GLDAS- and simulation-based TWSCs showed values 2.73~3.58 times higher than the GRACE-based estimate. It implies that the GRACE-approach underestimates TWSC during wet periods. It also suggests the need for correction factors to adjust the GRACE-based estimates in the rainy season.
Jae Young Seo,
Sang Ki Lee,
Validation of Terrestrial Water Storage Change Estimates Using Hydrologic Simulation, Journal of Water Resources and Ocean Science.
Vol. 3, No. 1,
2014, pp. 5-9.
B. D. Tapley, S. Bettadpur, J. C. Ries, P. F. Thompson, and M. M. Watkins, “GRACE measurements of mass variability in the earth system,” Science, 2004, vol. 305, pp. 503–505.
M. Rodell, J. S. Famiglietti, J. Chen, S. I. Seneviratne, P. Viterbo, and S. Holl, “Basin scale estimates of evapotranspiration using GRACE and other observations,”Geophys. Res. Lett., 2004, vol. 31, pp. L20504.
M. Rodell, J. Chen, H. Kato, J. S. Famiglietti, J. Nigro, and C. R. Wilson, “Estimating groundwater storage changes in the Mississippi River Basin (USA) using GRACE,” Hydrogeol. J., 2007, vol. 15, pp. 159-166.
P. J. F. Yeh, S. C. Swenson, J. S. Famiglietti, and M. Rodell, “Remote sensing of groundwater storage changes in Illinois using the Gravity Recovery and Climate Experiment (GRACE),” Water Resour. Res., 2006, vol. 42, pp. W12203.
S. Swenson, J. Wahr, and P. C. D. Milly, “Estimated accuracies of regional water storage variations inferred from the Gravity Recovery and Climate Experiment (GRACE),”WaterResour. Res., 2003, vol. 39, pp. 1223.
J. Wahr, S. Swenson, I. Velicogna, “Accuracy of GRACE mass estimates,”Geophys. Res. Lett., 2006, vol. 33, pp. L06401.
J.W. Crowely, J.X. Mitrovica, R.C. Bailey, M.E. Tamisiea, and J.L. Davis, “Land water storage within the Congo Basin inferred from GRACE satellite gravity data,”Geophys. Res. Lett., 2006, vol. 33, pp. L19402.
M. Rodell, I. Velicogna, and J.S. Famiglietti, “Satellite-based estimates of groundwater depletion in India,” Nature, 2009, vol. 460, pp. 999-1002.
M. Becker, W. LLovel, A. Cazenave, A. Guntner, and J. F. Cretaux, “Recent hydrological behavior of the East African great lakes region inferred from GRACE, satellite altimetry and rainfall observations,” C. R. Geosci., 2010, vol. 342, pp. 223–233.
B. R. Sacanlon, L. Longuevergne, and D. Long, “Ground referencing GRACE satellite estimates of groundwater storage changes in the California Central Valley, USA,”WaterResour. Res., 2012, vol. 48, pp. W04520.
O. Lenk, “Satellite based estimates of terrestrial water storage variations in Turkey,” J. Geodyn., 2012, vol. 67, pp. 106-110.
S.-I. Lee, J. S. Kim, and S. K. Lee, “Estimation of average terrestrial water storage changes in the Korean Peninsula using GRACE satellite gravity data,” J. Korean Water Resour. Asso., 2010, vol. 45, pp. 805-814.
NASA GES DISC, 2012, Available online at: http://daac. gsfc.nasa.gov/.
Water Management Information System (WAMIS). 2012. Available online at: http://www.wamis.go.kr/.
T. H. Syed, J. S. Famiglietti, M. Rodell, J. Chen, and C. R. Wilson, “Analysis of terrestrial water storage changes from GRACE and GLDAS,” Water Resour. Res., 2008, vol. 44, pp. W02433.
U.S. Army of Civil Engineers, HEC-HMS Manual, 2012.
National Geographic Information Institute (NGII), 2012, Available online at: http://www.ngii.go.kr/.