Comparing greenhouse gases with each other using GWP* preserves the link between emissions and warming or cooling of the atmosphere. Therefore, GWP* is better suited than GWP100 to assessing whether the world is on track to limit warming to well below 2C.
The Paris climate conference set the ambitious goal of finding ways to limit global warming to 1.5 degrees Celsius, rather than the previous threshold of 2 degrees. But what would be the difference between a 1.5 and 2 degree world? And how realistic is such a target?
The value of science is undermined when we adopt questionable assumptions and fine-tune our analysis to conform to dominant political and economic sensibilities.
If greenhouse gas emissions aren’t stopped soon, unprecedented and deadly heat waves will become the new normal in most of the world.
The headline findings on a global level are that around 80% of coal reserves, 50% of gas and one third of oil reserves need to remain unburnt if we are to have this chance of 2°C.
On Oct. 1, David G. Victor and Charles F. Kennel wrote an opinion piece that appeared in the journal Nature, Ditch the 2 C warming goal.