Global median relative uncertainty in GIA gravity rates is estimated at roughly 44%, driven by limitations in our knowledge of ice history and Earth's rheology.
Twin satellite missions that measure changes in Earth's gravity field over time. These changes indicate how mass—mostly water and ice—moves around the planet. 2. Why GIA is Vital to GRACE Data gia grace
GIA influences the movement of Earth's center of mass (the geocenter), which shifted by approximately 0.4 mm per year between 2003 and 2016. 4. Current Challenges in Modeling Global median relative uncertainty in GIA gravity rates
The ongoing "rebound" or visco-elastic response of the solid Earth to the removal of massive ice sheets from the last Ice Age. gia grace