Publications related to the GRACE Missions (no abstracts)

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Determination of Mass Changes in the Totten Glacier Basin, East Antarctica, Using an Improved Mascon Method With GRACE/GRACE–FO Data

Lu, Tingguo, Zhang, Shengkai, Xiao, Feng, Li, Jiaxing, Geng, Tong, Luo, Hui, Yang, Yidi, and Wu, Haojian, 2025. Determination of Mass Changes in the Totten Glacier Basin, East Antarctica, Using an Improved Mascon Method With GRACE/GRACE–FO Data. Journal of Geophysical Research (Solid Earth), 130(12):e2025JB031384, doi:10.1029/2025JB031384.

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@ARTICLE{2025JGRB..13031384L,
       author = {{Lu}, Tingguo and {Zhang}, Shengkai and {Xiao}, Feng and {Li}, Jiaxing and {Geng}, Tong and {Luo}, Hui and {Yang}, Yidi and {Wu}, Haojian},
        title = "{Determination of Mass Changes in the Totten Glacier Basin, East Antarctica, Using an Improved Mascon Method With GRACE/GRACE-FO Data}",
      journal = {Journal of Geophysical Research (Solid Earth)},
     keywords = {Antarctic, mass balance, Totten Glacier, mascon, GRACE, generalized additive model},
         year = 2025,
        month = dec,
       volume = {130},
       number = {12},
          eid = {e2025JB031384},
        pages = {e2025JB031384},
     abstract = "{Global warming intensifies Antarctic ice sheet mass loss, significantly
        impacting sea level rise. The Totten Glacier Basin, a dynamic
        region in East Antarctica, critically influences global sea
        levels due to its substantial mass balance variability. Using
        Gravity Recovery and Climate Experiment (GRACE)/GRACE Follow-On
        (GRACE-FO) gravity data, we developed an enhanced mascon
        inversion method incorporating satellite altimetry data to
        analyze mass balance changes in the Totten Glacier Basin and its
        subbasins from 2002 to 2023. The basin exhibited a mass loss of
        {\ensuremath{-}}17.93 {\ensuremath{\pm}} 0.43 Gt/yr, consistent
        with Center for Space Research (CSR), Jet Propulsion Laboratory
        (JPL), and German Research Centre for Geosciences (GFZ) mascon
        products ({\ensuremath{-}}18.19 {\ensuremath{\pm}} 0.46 Gt/yr
        mean). The regional atmospheric climate model RACMO2.3p2
        estimated higher losses ({\ensuremath{-}}25.00
        {\ensuremath{\pm}} 0.53 Gt/yr). Subbasin analysis revealed mass
        losses of {\ensuremath{-}}7.71 {\ensuremath{\pm}} 0.15 Gt/yr
        (our estimate), showing consistent long-term trends with
        CSR/JPL/GFZ means ({\ensuremath{-}}10.72 {\ensuremath{\pm}} 0.12
        Gt/yr) and RACMO2.3p2 ({\ensuremath{-}}11.88 {\ensuremath{\pm}}
        0.12 Gt/yr) despite spatial heterogeneity in magnitude. A
        generalized additive model (GAM) integrating climatic and
        environmental variables identified key drivers of mass balance
        changes: ice discharge, ocean temperature, surface pressure,
        evaporation, precipitation, Southern Hemisphere Annular Mode
        (SAM), and Southern Oscillation Index (SOI). Ice discharge and
        ocean temperature exerted dominant nonlinear impacts, while
        other factors exhibited spatiotemporal variability. These
        findings highlight the complex interplay of oceanic and
        atmospheric processes in Antarctic ice loss, emphasizing the
        need for multi-scale observational and modeling approaches to
        refine sea level projections.}",
          doi = {10.1029/2025JB031384},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2025JGRB..13031384L},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

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