Squeezing more information out of Time Variable Gravity data

Space gravity missions (GRACE, GOCE) give us the unique opportunity to measure mass redistribution within the Earth and at its surface due to a variety of geophysical phenomena involving all the facets of our planet, the solid Earth, the atmosphere, the hydrosphere and the cryosphere. GRACE, flying since 2002, was expressly designed to detect the time-dependent gravity field, and revealed the hydrological cycle of the Earth, but has also evidenced secular trends due to the slow but continuous upwarping of the crust in North America and Scandinavia due to Post Glacial Rebound (PGR). After more than 6 years of GRACE data, the time-series are long enough to allow more elaborate analysis.

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