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@ARTICLE{2026ComEE...7..518S,
       author = {{Sasgen}, Ingo and {Cruz Bacca}, Sebastian and {Klemann}, Volker and {Vlug}, Anouk and {Zemp}, Michael},
        title = "{Rapid rebound hides glacier mass loss from satellite observations in Alaska and Iceland}",
      journal = {Communications Earth and Environment},
     keywords = {Earth Sciences, Physical Geography and Environmental Geoscience},
         year = 2026,
        month = jun,
       volume = {7},
       number = {1},
          eid = {518},
        pages = {518},
     abstract = "{Time-variable satellite gravimetry constrains global glacier mass
        change, but requires correction for glacial isostatic
        adjustment. These corrections are commonly treated as slowly
        varying background signals from past ice loading and assumed to
        be separable from present-day glacier loss. Here we show that
        this separation can fail in low-viscosity settings, where
        viscoelastic rebound can approach isostatic compensation on
        annual-to-decadal timescales and covary with ongoing ice
        retreat. Using millennium-scale glacier reconstructions and
        viscoelastic Earth modelling, we incorporate rapid rebound into
        gravimetry trend inversions for Alaska and Iceland. This reveals
        additional ice loss of \raisebox{-0.5ex}\textasciitilde7
        {\ensuremath{\pm}} 1 Gt yr$^{{\ensuremath{-}}1}$ in Alaska and
        \raisebox{-0.5ex}\textasciitilde3 {\ensuremath{\pm}} 1 Gt
        yr$^{{\ensuremath{-}}1}$ in Iceland (2002--2025), with
        uncertainties spanning Earth-model spread. Globally, gravimetry-
        inferred glacier mass loss increases by
        \raisebox{-0.5ex}\textasciitilde10 Gt yr$^{{\ensuremath{-}}1}$
        (\raisebox{-0.5ex}\textasciitilde0.03 mm
        yr$^{{\ensuremath{-}}1}$ global mean sea-level rise;
        \raisebox{-0.5ex}\textasciitilde4\%), with
        \raisebox{-0.5ex}\textasciitilde9\% more loss in Alaska and
        about one-third more in Iceland. Similar inversion biases are
        expected elsewhere in low-viscosity regions.}",
          doi = {10.1038/s43247-026-03738-y},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2026ComEE...7..518S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}