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SEA LEVEL RISE IS ACCELERATING FASTER THAN THOUGHT

New researches prove the IPCC climate modelling right and belie previous studies that suggested that the rate of sea level rise had slowed down in the 1990s.

A new study conducted by the University of Tasmania and led by Dr Christopher Watson analysed sea level data between the years 1993 and 2014, and found that –unlike what previous researches maintained - sea level rise accelerated throughout this timespan; in fact, foregoing figures of the rise during the early 1990s were too high, and gave the false impression that the rate of sea level rise had decreased by 0.058 mm/year2 between 1993 and 2014, while it actually sped up by between 0.041 and 0.058 mm/year2 .

Sea level rise is calculated through tide measuring instruments placed around the world and, since 1993, through altimetric satellites, but both these instruments may supply imperfect data. Indeed, tide gauges sit on lands that are constantly shifting, and satellite instrumentation has lost some of its accuracy during the 1990s due to degradation, which led to imperfections in the measurement of the slight but significant changes occurred in sea levels because of climate change. Dr Watson’s team compared the two data sets, and was therefore able to identify where each was going wrong.

The outcome of this new research is into line with the modelling of the UN’s climate science body, the Intergovernmental Panel on Climate Change (IPCC), and Professor Jonathan Gregory from the University of Reading, who is one of the lead authors of the IPCC’s most recent climate report, said the study was indeed “interesting and useful” and supported the predictions of the models.

The IPCC’s landmark report in 2013 stated that sea had risen on average by 3.2 mm per year since 1993, and Professor Gregory’s report predicted that sea level could rise between 28cm and 98cm by 2100 depending on the amount of human-caused carbon emissions.

 

 

The gLAWcal Team

LIBEAC project

Tuesday, 12 May 2015

(Source: Guardian)

 

This news has been realized by gLAWcal—Global Law Initiatives for Sustainable Development in collaboration with the University Institute of European Studies (IUSE) in Turin, Italy and the University of Piemonte Orientale, Novara, Italy which are both beneficiaries of the European Union Research Executive Agency IRSES Project “Liberalism in Between Europe And China” (LIBEAC) coordinated by Aix-Marseille University (CEPERC). This work has been realized in the framework of Workpackages 4, coordinated by University Institute of European Studies (IUSE) in Turin, Italy.