Research on Yellow River Basin Water Storage Change Based on GRACE Gravity Satellite Data

Using the GRACE RL05 Level-2 60 rank gravity field spherical harmonic coefficient model,it rechecks the space-time distribution of Yellow River basin water storage change from 2004 to 2010.The results show that the Yellow River basin water storage have obvious seasonal and annual changes.From 2004 to 2010,the total water storage decreased at a rate of 0.25 mm/a, and the rate of reduction of water reserves from January 2006 to May 2007 was relatively large,which was approximately 1.6 mm/a.Comparing the calculation results with the GLDAS hydrological model’s, it shows this two results have obvious correlation,the correlation coefficient is 0.81.