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GRACE & GFO SATELLITE GRAVIMETRY DATA FOR HYDROLOGY AND EARTH ROTATION
The GRACE and GRACE-FO satellites provide data on the Earth's gravitational field changes and are among the most successful NASA/DLR geodetic missions in recent decades. Based on their data, the melting of glaciers, redistribution of masses in the river basins, and changes in the ocean mass are studied. We use multichannel singular spectral analysis (MSSA) to filter these data and separate into principal components. As a result, it is possible to track regional trends associated with floods, droughts, and other climatic anomalies. Geoid monitoring from space also allows to identify global changes in the flattening of the Earth's figure, related to its rotational velocity. The mass component measured from space affects the drift of the Earth's pole, which has changed in recent decades. The report identifies the connections between the mass redistributions on the planet, climate processes, and Earth's rotation.