课题组应用卫星重力、卫星测高、GNSS等对地观测技术，融合多源观测资料探测了多时空尺度下典型区域的地表物质迁移境况，结合主成分分析、奇异谱分析以及独立分量分析等先进信号分析手段，深入理解地表物质迁移机制及演化规律，揭示了人类活动与环境、气候变化之间的内在联系，服务于国家需求，为环境治理、灾害防治等重大决策提供理论依据。主要研究成果包括：构建了南极和格陵兰冰盖高分辨率点质量模型并准确估计其消融速率；全面分析了影响海平面变化估计的多个潜在因素，进一步提升了全球海平面闭合度；利用数据驱动方法填补了GRACE和GRACE Follow-on之间的缺失数据，为两代卫星重力的数据延续性提供了有利保障；利用高分辨率时变重力场和水文模型准确测定了华北平原地下水、多层土壤水的损耗速率及驱动因素、驱动机制，并分析了与地表垂直形变的紧密联系；探究了珠江流域陆地水变化及驱动因素；分析了珠江流域和澳大利亚极端干旱事件的成因。

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