A big step forward
Posted on the 10.11.2013 by Jérôme Coupé
On 27 september 2013, the Fifth Assessment Report (AR5) has finally been published by the IPCC (United Nations Intergovernmental Panel on Climate Change. At least the first of its three volumes to come.
Despite the eternal pros and contras, despite the various communiqués published in the worldwide media since Septembre 2013, this AR5 marks another step towards the reconnaissance by the international science that the climate change is a reality.
This report is quite a long and serious document : a total of 209 lead authors and 50 review editors from 39 countries and more than 600 contributing authors from 32 countries contributed to the preparation of Working Group I AR5. For more on how the Working Group I report was prepared click here.
Here are nevetheless the AR5 highlights.
- This is now an evidence that, in most countries and regions of our planet, human activities do influence the evolution of the Climate Change.
- Our globe is getting warmer and warmer.
- Global warming for the end of the 21st century is projected to be likely to exceed 1.5°C relative to 1850 to 1900 in all, but the lowest scenario considered, and likely to exceed 2°C for the two high scenarios
- Projections of climate change are based on a new set of four scenarios of future greenhouse gas concentrations and aerosols, spanning a wide range of possible futures. The Working Group I report assessed global and regional-scale climate change for the early, mid-, and later 21st century.
On 11-22 November this year, The 19th annual meeting of the UN Climate Change Convention will be held in Warsaw. According to press release, the IPCC should then deliver other scientifice evidence to politicians in order to force them to take right policy decisions.
One can be sure that from now on, the political decisions taken by the big people of our planet will never be the same. IPCC work, although not always very accurate, has drawn a new world where respect to carbon emission has to be taken into account.