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Global heating will pass 1.5C threshold this year, top ex-Nasa scientist says
(www.theguardian.com)
this post was submitted on 09 Jan 2024
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This is the best summary I could come up with:
The internationally agreed threshold to prevent the Earth from spiraling into a new superheated era will be “passed for all practical purposes” during 2024, the man known as the godfather of climate science has warned.
This temperature high, measured over the 12-month period to May, will not by itself break the commitment made by the world’s governments to limit global heating to 1.5C (2.7F) above the time before the dominance of coal, oil and gas.
The heating of the world from greenhouse gas emissions is being reinforced by knock-on impacts, Hansen said, such as the melting of the planet’s ice, which is making the surface darker and therefore absorbing even more sunlight.
“Passing through the 1.5C world is a significant milestone because it shows that the story being told by the United Nations, with the acquiescence of its scientific advisory body, the IPCC, is a load of bullshit,” Hansen said.
For developing countries and small island states at existential risk from sea level rise and extreme weather, the agreed goal is a hard-fought and totemic one, with “1.5 to stay alive” now a common mantra heard at international climate talks.
Even if the world’s temperature is to break the 1.5C barrier, researchers stress that this doesn’t mean that all will irretrievably be lost, with every fraction of a degree added, or not, significant in shaping the severity of climate impacts.
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