Determination of Weak Terrestrial Water Storage Changes from GRACE in the Interior of the Tibetan Plateau

Time series of the Gravity Recovery and Climate Experiment (GRACE) satellite mission have been successfully used to reveal changes in terrestrial water storage (TWS) many parts world. This has hindered interior Tibetan Plateau since derived TWS there are very sensitive selections different available GRACE solutions, filters remove north-south-oriented (N-S) stripe features observations. resulted controversial distributions previous studies. In this paper, we produce aggregated hydrology signals (AHS) from 2003 2009 test a large set solution-filter combinations mascon models identify best combination or model whose filtered results match our AHS. We find that application destriping filter is indispensable correlated errors shown as N-S stripes. Three best-performing identified and, combined with two they represent most reliable for determination weak GRACE. turn, more than 100 other tested solutions lead inside outside plateau partly disagree largely mainly attributed less effective suppression noises. Our also show performed within maximum degree order 60 spherical harmonic solutions. The one single anomaly trend when additional smoothing 340-km-radius Gaussian applied. suggest using adjacent areas during whole operation time span 2002 2017 well succeeding GRACE-FO mission.