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<p>The Gravity Recovery and Climate Experiment (GRACE) and GRACE follow-on have enabled basin- to continental-scale monitoring of global water storage, cryospheric mass change, and sea-level variation since 2002. Yet key challenges remain in coarse spatial resolution, signal leakage, and dependence on auxiliary models. This review synthesizes research progress and frontiers by tracking thematic evolution, methodological innovation, and interdisciplinary integration. Analyzing 2417 publications from Web of Science Core Collection (2015–2025) with CiteSpace, we mapped publication patterns, research hot spots, collaboration networks, and emerging frontiers. Three main findings stood out: (1) a progression from “mission milestones” to “methodological innovation” and “cross-disciplinary expansion,” with terrestrial water storage, gravity inversion, and water balance as core themes, while machine learning and multi-source fusion as recent foci; (2) a global collaboration network dominated by the National Aeronautics and Space Administration, the Chinese Academy of Sciences, and the German Research Centre for Geosciences, showing strong cooperation among North America, Europe, and China but limited engagement elsewhere; and (3) expansion in interdisciplinary areas, such as carbon cycle–hydrology coupling and the water–energy–food nexus, underscoring GRACE’s role in sustainability. This study outlines priorities to advance GRACE applications through mission continuity, AI-based modeling, and high-resolution regional analysis, contributing to global change research and water resource management.</p>

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A knowledge map-based review of GRACE satellite applications across multiple domains: challenges and future directions

  • 期刊论文

  • 发表日期：

    2026年2月27日

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  • Junyu Sun,
  • Xin Sun,
  • Riquan Song,
  • Ran Hao,
  • Hongwei Li

摘要

The Gravity Recovery and Climate Experiment (GRACE) and GRACE follow-on have enabled basin- to continental-scale monitoring of global water storage, cryospheric mass change, and sea-level variation since 2002. Yet key challenges remain in coarse spatial resolution, signal leakage, and dependence on auxiliary models. This review synthesizes research progress and frontiers by tracking thematic evolution, methodological innovation, and interdisciplinary integration. Analyzing 2417 publications from Web of Science Core Collection (2015–2025) with CiteSpace, we mapped publication patterns, research hot spots, collaboration networks, and emerging frontiers. Three main findings stood out: (1) a progression from “mission milestones” to “methodological innovation” and “cross-disciplinary expansion,” with terrestrial water storage, gravity inversion, and water balance as core themes, while machine learning and multi-source fusion as recent foci; (2) a global collaboration network dominated by the National Aeronautics and Space Administration, the Chinese Academy of Sciences, and the German Research Centre for Geosciences, showing strong cooperation among North America, Europe, and China but limited engagement elsewhere; and (3) expansion in interdisciplinary areas, such as carbon cycle–hydrology coupling and the water–energy–food nexus, underscoring GRACE’s role in sustainability. This study outlines priorities to advance GRACE applications through mission continuity, AI-based modeling, and high-resolution regional analysis, contributing to global change research and water resource management.