Science Applications Summary

The estimates of the Earth gravity field from GRACE, in conjunction with other space-based measurements, in situ data and geophysical models will be used to determine the time varying changes in the mass of the Earth's dynamical system due to different geophysical processes as described in detail in this brochure.

Static Gravity Field Measurements

APPLICATION	RESOLUTION
Oceanic Heat Flux	>1000 km
Ocean Currents	>1000 km
Solid Earth Sciences	>300 km

Time Variable Gravity Field Measurements

APPLICATION	RESOLUTION	TIME SCALE	COMMENTS
Oceanic Heat Flux	>1000	Seasonal	30 day estimate
Ocean Bottom Pressure	>500 km	Seasonal	30 day estimate
Deep Ocean Currents	>500 km	Seasonal	30 day estimate
Sea Level Rise	>700 km	Secular	5 year estimate
Evapo-Transpiration	>300 km	Seasonal	30 day estimate
Greenland/Antarctic Ice		Secular Seasonal	5 year estimate 1 year estimate

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