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A Tool to Assess the Accuracy of Glacial Isostatic Adjustment Predictions of Present-Day Crustal Uplift Rates

Alvarez Rodriguez, Guadalupe, Tregoning, Paul, and McGirr, Rebecca, 2025. A Tool to Assess the Accuracy of Glacial Isostatic Adjustment Predictions of Present-Day Crustal Uplift Rates. Geophysical Research Letters, 52(20):e2025GL116421, doi:10.1029/2025GL116421.

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@ARTICLE{2025GeoRL..5216421A,
       author = {{Alvarez Rodriguez}, Guadalupe and {Tregoning}, Paul and {McGirr}, Rebecca},
        title = "{A Tool to Assess the Accuracy of Glacial Isostatic Adjustment Predictions of Present-Day Crustal Uplift Rates}",
      journal = {\grl},
     keywords = {GIA, GPS, spcae geodesy, GRACE/GRACE-FO, cryosphere},
         year = 2025,
        month = oct,
       volume = {52},
       number = {20},
          eid = {e2025GL116421},
        pages = {e2025GL116421},
     abstract = "{Ongoing glacial isostatic adjustment (GIA) is detectable in geodetic
        height time series and changes in the temporal gravity field.
        Global GIA models are often used to remove these signals from
        data but quantifying the errors in such models is difficult due
        to insufficient knowledge of Earth rheology and past ice
        history. Here we describe how estimates of Earth's temporal
        gravity field and observed height time series can be used to
        quantify errors in GIA models. We tested several GIA models in
        Fennoscandia, Laurentia and Greenland and found spatial
        coherence in the pattern of errors, with root mean square
        velocity errors of ${\sim} $1 mm/yr, ${\sim} $2 mm/yr and
        ${\sim} $5 mm/yr, respectively. Surprisingly, there are
        substantial similarities in the errors of the models tested. Our
        diagnostic tool can be used to identify regions where ice
        histories and/or Earth rheology parameters are deficient in the
        GIA models.}",
          doi = {10.1029/2025GL116421},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2025GeoRL..5216421A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

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