Rates of sea-level change over the past century in a geocentric reference frame
Article first published online: 24 JUN 2009
Copyright 2009 by the American Geophysical Union.
Geophysical Research Letters
Volume 36, Issue 12, June 2009
How to Cite
2009), Rates of sea-level change over the past century in a geocentric reference frame, Geophys. Res. Lett., 36, L12607, doi:10.1029/2009GL038720., , , , , , , and (
- Issue published online: 24 JUN 2009
- Article first published online: 24 JUN 2009
- Manuscript Accepted: 21 MAY 2009
- Manuscript Received: 15 APR 2009
- sea-level change;
- vertical land motion;
- tide gauge records
 The results from a carefully implemented GPS analysis, using a strategy adapted to determine accurate vertical station velocities, are presented. The stochastic properties of our globally distributed GPS position time series were inferred, allowing the computation of reliable velocity uncertainties. Most uncertainties were several times smaller than the 1–3 mm/yr global sea level change, and hence the vertical velocities could be applied to correct the long tide gauge records for land motion. The sea level trends obtained in the ITRF2005 reference frame are more consistent than in the ITRF2000 or corrected for Glacial-Isostatic Adjustment (GIA) model predictions, both on the global and the regional scale, leading to a reconciled global rate of geocentric sea level rise of 1.61 ± 0.19mm/yr over the past century in good agreement with the most recent estimates.