Global Warming and Climate Emergency are not new words for the world as the temperature of the earth is rising with the level of CO2, SO2, and other harmful gases is rising in the atmosphere.Human life comes in a larger danger on the earth as the climate crisis is increasing rapidly with rising temperatures around the world including oceans.
A new study published by the PNAS, USA shows that more than a billion people on the planet will either be displaced or forced to survive in the extreme insufferable heat with every addition 1C rise in the global temperature.
The new study warns that in a worst-case scenario of increasing emissions, areas currently home to one-third of the world’s population will be as hot as the hottest parts of the Sahara within 50 years.
It also notes that even in the most optimistic cases about 1.2 billion people will have to survive in the most uncomfortable weather humans have been living on the planet for at least the last 6,000 years.
“The numbers are flabbergasting. I literally did a double-take when I first saw them, ” Tim Lenton, of Exeter University, said. “I’ve previously studied climate tipping points, which are usually considered apocalyptic. But this hit home harder. This puts the threat in very human terms.”
The main objective of the study published in the Proceedings of the National Academy of Sciences examines it as how it will affect the human habitat on the Planet.
The report notes that from a long time humanity has always been living in regions that have average annual temperatures are around 6ºC (43ºF) to 28ºC (82ºF), which is perfect for human well-being and food production. But human life is losing this sweet spot as a result of manmade global heating, which might push people into “near unliveable” extreme heat.
Since the land temperature is rising faster than the oceans and the report notes that the most extreme temperatures will be witnessed in already hot regions of Africa and Asia. In these regions, the average human will experience a temperature increase of 7.5ºC when global temperatures reach 3ºC, which is forecasted for the end of this century.
In the worst-case scenario — about 30% of the world’s population would live in extreme heat – defined as an average temperature of 29ºC (84ºF). Currently, this weather condition is extremely rare to find outside of Sahara Region, but with global heating of 3ºC they are projected to cover about 1.2 billion people in India, 485 million in Nigeria, and more than 100 million in each of Pakistan, Indonesia, and Sudan.
We were blown away by the magnitude,” he said. “There will be more change in the next 50 years than in the past 6,000 years.”
“I think it is fair to say that average temperatures over 29C are unliveable. You’d have to move or adapt. But there are limits to adaptation. If you have enough money and energy, you can use air conditioning and fly in food and then you might be OK. But that is not the case for most people,” said one of the lead authors of the study, Prof Marten Scheffer of Wageningen University.
“Clearly we will need a global approach to safeguard our children against the potentially enormous social tensions the projected change could invoke,” another of the authors, Xu Chi of Nanjing University, said.
The author of the study hopes that their findings should push lawmakers to quicken emission cuts and work together to cope with departure because each degree of warming can be avoided and it will save a billion people from falling out of humanity’s climate niche.