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Duan, X.J. (author), Guo, J.Y. (author), Shum, C.K. (author), Van der Wal, W. (author)We revisit the empirical moving window filtering method of Swenson and Wahr (Geophys Res Lett 33:L08402, 2006) and its variants, Chambers (Geophys Res Lett 33:L17603, 2006) and Chen et al. (Geophys Res Lett 34: L13302, 2007), for reducing the correlated errors in the Stokes coefficients (SCs) of the spherical harmonic expansion of the GRACE...journal article 2009
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Schmidt, M. (author), Han, S.C. (author), Kusche, J. (author), Sanchez, L. (author), Shum, C.K. (author)We determine a regional spatiotemporal gravity field over northern South America including the Amazon region using GRACE inter-satellite range-rate measurements by application of a wavelet-based multiresolution technique. A major advantage of this method is that we are able to represent the Amazon hydrological signals in form of time series of...journal article 2006