August 19, 2025GeosciencesOpen Access

Least Squares Collocation for Estimating Terrestrial Water Storage Variations from GNSS Vertical Displacement on the Island of Haiti

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LSC effectively reduces errors in estimating terrestrial water storage changes, enhancing overall accuracy.
In dense GNSS areas, a strong correlation of 0.83 between TWS and hydrological input indicates improved reliability.
The method faced challenges in sparse regions, showing a root-mean-square-error of 115 kg/m2 with poor data agreement.
Utilizing covariance functions in LSC aids in stabilizing inverse modeling for tangled hydrological signals.

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Analysis reveals GNSS vertical displacement impacts terrestrial water storage estimation, highlighting data interdependence.

Sauveur et al. (2025) studied this question.

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