Regular Gravity Field Variations and Mass Transport in the Earth System from DEOS Models Based on GRACE Satellite Data

摘要: Regular mass variations in the Earth system are analyzed using a new time series of gravity field models produced at DEOS. The subjects special attention secular trends as well seasonal (annual and semi-annual) variations. It is found, particular, that (i) largest negative trends, which associated with shrinking ice sheets polar areas, reach 18–20 cm terms water height per year; (ii) positive presumably related to post-glacial rebound, 7–9 cm/year; (iii) peak-to-peak variations, mostly observed large river basins, 50–100 cm/year. Furthermore, confidence computed point order isolate persistent trends. set locations where relatively small but includes Svalbard archipelago, Pamir mountains, Congo watershed, Enderby Land Antarctica.