Detection of Continental Hydrology and Glaciology Signals from GRACE: A Review

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Abstract
Since its launch in March 2002, the Gravity Recovery and Climate Experiment (GRACE) has provided a global mapping of the time-variations of the Earth\textquoterights gravity field. Tiny variations of gravity from monthly to decadal time scales are mainly due to redistributions of water mass inside the surface fluid envelops of our planet (i.e., atmosphere, ocean and water storage on continents). In this article, we present a review of the major contributions of GRACE satellite gravimetry in global and regional hydrology. To date, many studies have focused on the ability of GRACE to detect, for the very first time, the time-variations of continental water storage (including surface waters, soil moisture, groundwater, as well as snow pack at high latitudes) at the unprecedented resolution of ~400-500 km. As no global complete network of surface hydrological observations exists, the advances of satellite gravimetry to monitor terrestrial water storage are significant and unique for determining changes in total water storage and water balance closure at regional and continental scales.
Year of Publication
2008
Journal
Surveys in Geophysics
Volume
29
Number of Pages
361-374
Date Published
10/2008
URL
http://adsabs.harvard.edu/abs/2008SGeo...29..361R
DOI
10.1007/s10712-008-9048-9