Disclaimer: The Physical Oceanography Research Group (PO-Res. Grp) makes every
effort to ensure that information contained in these pages is accurate and up to
date. However, the PO-Res. Grp accepts no liability and/or responsibility for the
reliance placed by the users of these pages on the information contained in these
pages or any other information accessed via this web page. The information provided
in these pages is provided on an "as is" basis and no warranties of any kind are
issued whether expressly or implied by the PO-Res. Grp on the information provided.
The OSR is a periodically published scientific report written by more than 100
scientific experts from more than 30 European institutions. It is a comprehensive
and state-of-the-art assessment of the current state, natural variations, and
changes in the ocean meant to act as a reference document for scientists, the
Blue business community, policy and decision-makers as well as the general public.
Over the past quarter of a century, global sea ice melted at a pace far faster
than ever observed since our earliest records dating back to the 1980s and there
was a record sea ice extent low at both poles during the year 2016.
In the Arctic, sea ice extent is decreasing at a rate of 6.2% per decade, while
sea ice volume has decreased at a rate of 15.4% per decade.
Over the past quarter of a century, the global ocean and the European seas are
warming and the sea level is rising, and a number of record-breaking extreme
events occurred in Europe.
Global sea level is rising at a rate of 3.3 millimetres per year.
About 30-40% of this sea level rise is due to the thermosteric (warming)
effect (water expands when heated).
Sea level rise in European seas increased at a rate of 2.5 to 4 millimetres
Global ocean heat content (heat absorbed by the ocean) increased at a rate of
0.8 Watts (heat) per meters squared. About 93% of the excess heat created by human
activities on Earth is absorbed by the ocean.