https://rogerpielkejr.substack.com/p/the...te-reality
INTRO: Last week John Kerry, the U.S. Special Presidential Envoy for Climate, said in a speech at the New York Climate Summit:
Kerry’s large change in outlook — from 4C to 2.5C or less — will come as no surprise to readers here, as for years I’ve been talking about the incredible shift in expectations for the future. Despite the growing recognition that our collective views of the future have changed quickly and dramatically, this change in perspective — a positive and encouraging one at that — has yet to feature in policy, media or scientific discussions of climate.
That silence can’t last, as reality is persistent... (MORE - details)
INTRO: Last week John Kerry, the U.S. Special Presidential Envoy for Climate, said in a speech at the New York Climate Summit:
“We're currently heading towards something like 2.4 degrees, 2.5 degrees of warming on the planet”
Let’s compare that to what Kerry said in another speech almost exactly 2 years before, in September 2021:“Currently, as we’re talking today, we are regrettably on course to hit somewhere between 3, 4 degrees at the current rate.”
Kerry’s latest views on projected global temperature change has no doubt been informed by the latest net-zero assessment of the International Energy Agency, released to the public yesterday, which projects a median warming in 2100 under “stated policies” of ~2.4 degrees Celsius as you can see in the figure below.Kerry’s large change in outlook — from 4C to 2.5C or less — will come as no surprise to readers here, as for years I’ve been talking about the incredible shift in expectations for the future. Despite the growing recognition that our collective views of the future have changed quickly and dramatically, this change in perspective — a positive and encouraging one at that — has yet to feature in policy, media or scientific discussions of climate.
That silence can’t last, as reality is persistent... (MORE - details)