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Laboratoire d’Etudes en Géophysique et Océanographie Spatiales

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Monitoring of long term sea level trend

At the global scale, the mean sea elevation is about 1 to 2 mm/year. This estimation is based on the last century tide gauge analysis. With the global warming by greenhouse effect, we can estimate a mean sea level elevation of 50 cm during the following century. If we would like to detect this trend on 10 years with 10% of error, we are aimed at measuring a global elevation of 5 cm with an error of 5 mm. So as to validate this variation, we need high quality recording of independent tide gauges. Thus, the GLOSS/WOCE program was created to peform this scientific needing. The four tide gauges of ROSAME are part of the global GLOSS network.

First tide pole installed at Keguelen by SHOM in 1949

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