Rates of sea-level change over the past century in a geocentric reference frame

Details Rates of sea-level change over the past century in a geocentric reference frame Rates of sea-level change over the past century in a geocentric reference frame

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3612607w&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 12, CiteID L12607

Statistics

Computation

17

Geodesy And Gravity: Ocean Monitoring With Geodetic Techniques (1225, 1641, 3010, 4532, 4556, 4560, 6959), Oceanography: Physical: Sea Level: Variations And Mean (1222, 1225, 1641), Global Change: Sea Level Change (1222, 1225, 4556), Geodesy And Gravity: Control Surveys

Scientific paper

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.

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