What’s the difference between 1.5 and 2 degrees of global warming?

-The risks to our climate of a rise in global temperatures of 2C over pre-industrial levels could make life unbearable for millions of people.

-While limiting global warming to 1.5C could, for example, reduce the number of people who will experience water stress by 50%.

-Ice-free summers will be increasingly common in the Arctic Ocean if average global warming reaches 2C.

-An effective energy transition is vital to reducing climate change. Although it is underway, progress is still too slow, according to some experts.

A difference of half a degree celsius might not mean much to someone sitting in the sun or adjusting the heating in their home. But in terms of how much warming we are subjecting the planet to, it could mean many millions more people are subjected to life-threatening climate events.

If average global temperatures reach 1.5C above pre-industrial levels, we can expect the Arctic ocean to have one ice-free summer every 100 years. But if warming rises to 2C, ice-free summers in the Arctic could happen every 10 years. That’s just one example given in a recent Intergovernmental Panel on Climate Change (IPCC) report that illustrates just how significant that extra 0.5C of warming could be.

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Πηγή: weforum.org

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