Gravity Changes, Soil Moisture and Data Assimilation

该项目将评估空间和地面重力测量在监测区域水文循环变化方面的效用。目前还没有监测地球仪陆地水储存变化的方法，尽管这些方法对于评估土地使用和气候变化的大规模变化的影响很重要。今年晚些时候发射的美国宇航局重力恢复和气候实验卫星提供了一个为期5年的机会窗口，可以进行地面研究，以测试这种通过重力测量监测陆地水储存的创新技术-这在理论上是可能的，但直到现在还没有测试过。

This project will assess the utility of space and ground based gravity measurements for monitoring changes in the hydrological cycle at regional scales. At present there are no methods available for monitoring changes in terrestrial water storage over the globe, despite their importance for assessing the effects of large-scale changes in land use and climate change. The launch of NASA's Gravity Recovery and Climate Experiment satellites later this year provides a 5-year window of opportunity to undertake ground-based research to test this innovative technique for monitoring terrestrial water storage from gravity measurements - something that has been shown to be possible theoretically, but has not been testable until now.