Post-processing removal of correlated errors in GRACE data

Details Post-processing removal of correlated errors in GRACE data Post-processing removal of correlated errors in GRACE data

Apr 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3308402s&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 8, CiteID L08402

Physics

135

Geodesy And Gravity: Time Variable Gravity (7223, 7230), Geodesy And Gravity: Satellite Geodesy: Results (6929, 7215, 7230, 7240), Geodesy And Gravity: Satellite Geodesy: Technical Issues (6994, 7969), Geodesy And Gravity: Instruments And Techniques, Geodesy And Gravity: General Or Miscellaneous (1709)

Scientific paper

Gravity fields produced by the Gravity Recovery and Climate Experiment (GRACE) satellite mission require smoothing to reduce the effects of errors present in short wavelength components. As the smoothing radius decreases, these errors manifest themselves in maps of surface mass variability as long, linear features generally oriented north to south (i.e., stripes). The presence of stripes implies correlations in the gravity field coefficients. Here we examine the spectral signature of these correlated errors, and present a method to remove them. Finally, we apply the filter to a model of surface-mass variability to show that the filter has relatively little degradation of the underlying geophysical signals we seek to recover.

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