Satellite gravimetry and global sea level change

– Jianli Chen, professeur à l’Université de Hong Kong –

Résumé :

The Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow-On (FO) missions provide a revolutionary means for measuring large-scale mass redistribution within the Earth system on global basis with unprecedented accuracy. The over 20 years of GRACE/GRACE-FO time-variable gravity measurements have been successfully used in studies of mass redistribution and variation in different components of the climate system, including the atmosphere, ocean, land hydrology and cryosphere, and brought a new era of the global sea level change. This presentation will provide an overview of the applications of GRACE/GRACE-FO satellite gravity measurements in studying the global sea level change, as well as a novel application of Satellite Lasor Ranging in studying the global ocean mass change over the entire satellite altimeter era.