Geophysical Research Letters

Climate-related change of sea level in the extratropical North Atlantic and North Pacific in 1993–2003

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Abstract

[1] Climate-related change of sea level is one of the most challenging concerns for the humankind. Here we present a comparative analysis of the interannual variability of sea level in the extratropical North Atlantic and North Pacific oceans based on the high-accuracy TOPEX/Poseidon, Jason-1 and ERS-1/2 measurements from November 1992 to June 2003. We found indications of the interdecadal variability of the sea level in the North Pacific possibly related to the Pacific Decadal Oscillation and suggested that the observed decadal rise of sea level in the subpolar and eastern North Atlantic may have been related to the interdecadal change. While the North Atlantic subtropical and subpolar gyres decelerated, the opposite occurred in the North Pacific. The year-to-year variations of sea level showed coherence between the North Atlantic Oscillation, El Niño/La Niña and Pacific Decadal Oscillation events and respective gyre-scale changes.

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