So the GRACE satellite time-variable gravity field can only determine water storage variation over thousands kilometers or more with high accuracy presently.
可见，当前GRACE卫星时变重力场只能确定出上千公里及以上尺度区域的水储量变化。
Using measurements of time-variable gravity field from the Gravity Recovery and Climate Experiment(GRACE)satellite, mass variations of the Antarctic ice and snow are estimated.
利用GRACE重力卫星提供的时变重力场反演了南极大陆冰雪质量变化。
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