Recent relative sea-level trends: an attempt to quantify the forcing factors

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
Hans-Peter Plag

Abstract

Local sea-level is affected by a number of forcing factors, which all contribute to the trends observed by tide gauges. Here we use the fingerprints of main factors contributing to secular sea-level trends to construct an initial empirical model that explains best the trends in sea-level as recorded by the large number of coastal tide gauges over the last 50 years. The forcing factors considered include steric changes derived from observations, post-glacial rebound as predicted by geophysical models and mass changes in the Greenland and Antarctic ice sheets as predicted by the static sea-level equation. The approximation of the observed spatial pattern of sea-level trends through a model based on the spatial fingerprints of the main forcing factors fully utilizes the information contents of the available observations and models and allows the interpolation of the sea-level trends between the tide gauges. As a result, we obtain the global picture of sea-level trends due to the forcing factors accounted for in the analysis. Moreover, we derive constraints on the mass changes of the large ice sheets. The empirical models explain about 15% of the variance of the sea-level trends. Nevertheless, the models are correlated with the obs...Continue Reading

References

Oct 16, 2001·The Journal of Clinical Endocrinology and Metabolism·UNKNOWN Advisory Panel on Testosterone Replacement in Men

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Citations

Jul 10, 2010·International Journal of Environmental Research and Public Health·Shilu TongDylan Walker
Dec 15, 2010·Annual Review of Marine Science·Anny Cazenave, William Llovel

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