Gravity Changes, Soil Moisture and Data Assimilation

重力变化、土壤湿度和数据同化

• 批准号: DP0343778
• 负责人: Prof Jeffrey Walker
• 金额: $ 19.16万
• 依托单位: The University of Melbourne
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2003
• 资助国家: 澳大利亚
• 起止时间: 2003-01-07 至 2006-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0343778
• 关键词: Gravity; Changes; Soil; Moisture; Data

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.

该项目将评估空间和地面重力测量在区域尺度上监测水文循环变化的效用。目前还没有监测全球陆地储水量变化的方法，尽管它们对评估大规模土地利用变化和气候变化的影响很重要。今年晚些时候，美国宇航局发射的重力恢复和气候实验卫星将为地面研究提供5年的机会，以测试这种创新的技术，通过重力测量来监测陆地上的水储存——这在理论上是可能的，但直到现在还没有得到验证。