Publications related to the GRACE Missions (no abstracts)

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Spatial roles of cryospheric and hydrological mass redistribution in Earth's oblateness J$_2$ trend using GRACE/GFO measurements

Shi, Qiqi, Zhou, Yonghong, Chen, Jianli, Jin, Shuanggen, Xu, Cancan, and Xu, Xueqing, 2026. Spatial roles of cryospheric and hydrological mass redistribution in Earth's oblateness J$_2$ trend using GRACE/GFO measurements. Advances in Space Research, 77(6):6976–6989, doi:10.1016/j.asr.2026.01.067.

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@ARTICLE{2026AdSpR..77.6976S,
       author = {{Shi}, Qiqi and {Zhou}, Yonghong and {Chen}, Jianli and {Jin}, Shuanggen and {Xu}, Cancan and {Xu}, Xueqing},
        title = "{Spatial roles of cryospheric and hydrological mass redistribution in Earth's oblateness J$_{2}$ trend using GRACE/GFO measurements}",
      journal = {Advances in Space Research},
     keywords = {Earth'soblatenessJ$_{2}$, Mass redistribution, Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow-On (GFO), Ice melting, Terrestrial water storage (TWS)},
         year = 2026,
        month = mar,
       volume = {77},
       number = {6},
        pages = {6976-6989},
     abstract = "{The large-scale global mass distribution affects Earth's oblateness
        J$_{2}$. Since the 21st century, the previously observed secular
        decrease in J$_{2}$ attributed to glacial isostatic adjustment
        has been reversed, with J$_{2}$ now increasing under climate
        change. Revealing the spatial roles of mass redistribution
        contributing to the J$_{2}$ trend is essential for understanding
        Earth's dynamic processes. In this paper, we quantify the
        cryospheric and hydrological contributions to the J$_{2}$ trend
        utilizing the Gravity Recovery and Climate Experiment (GRACE)
        and GRACE Follow-On (GFO) measurements. Unlike previous efforts
        that drew merely general conclusions about J$_{2}$ contribution
        sources, we conduct a detailed analysis to identify the
        underlying spatial patterns of mass migration associated with
        these sources. The Greenland and Antarctic ice sheets (GrIS and
        AIS) remain the dominant contributors to the increasing J$_{2}$
        trend; however, the contribution from AIS melting has slowed and
        recently tended toward stabilization, due to mass gains in East
        Antarctica. Mass changes in mountain glaciers, independently
        determined through GRACE/GFO and results from satellite
        radiometry measurements of changes in glacier size, provide a
        substantially large contribution to the J$_{2}$ trend, mainly
        from mountain glaciers in mid- to high-latitude North America
        and Eurasia, even surpassing the effect of AIS melting. The
        contributions of land hydrology to the increasing J$_{2}$ trend
        are ascertained to be driven by increased terrestrial water
        storage (TWS) in Africa and by TWS depletion together with
        potential ice loss in Eurasia. These findings provide an
        improved understanding of how global ice and TWS changes
        influence geodynamic processes.}",
          doi = {10.1016/j.asr.2026.01.067},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2026AdSpR..77.6976S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

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