Acceleration of the global coastal sea level rise during the 20th century re-evaluated
Author(s)Bâki Iz H.
Sea level acceleration
Sea level rise
Mean sea level
PSMSL Tide Gauge data. Confounders. Autocorrelated disturbances
Full recordShow full item record
AbstractIn contrast to some of the recent investigations, this study shows that far less number of tide gauge stations experienced statistically significant accelerations in sea level rise during the 20th century. Twenty-seven tide gauge stations with century long data were analyzed for the presence of an acceleration in global sea level rise using a kinematic model inclusive of a secular trend, acceleration, and compounded periodicities with autocorrelated random effects. Eight out of twenty-seven stations revealed statistically significant but slow sea level rise acceleration (p<0.01) within the 0.01-0.02 mm/yr2 range compared to the sixteen stations with accelerations estimated using the models by the previous investigations,which did not account for the compounded periodicities and autocorrelations in sea level changes.