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Nations Are Getting Serious About Climate Action. Just Not Serious Enough. There’s a lot more work to do to keep global temperatures at relatively safe levels (www.nytimes.com)
submitted 11 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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If every single country were to follow through on its stated plans (a big if) then global greenhouse gas emissions would be 2 percent to 9 percent lower at the end of the decade than they are today.

But that would still put Earth on track to heat up roughly 2.5 to 2.9 degrees Celsius over preindustrial levels by the century’s end, the report found. With every fraction of a degree of warming, the risks from deadly heat waves, wildfires, droughts, storms and species extinctions increase significantly, scientists have said.

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[-] Jummit@lemmy.one 1 points 11 months ago

But that would still put Earth on track to heat up roughly 2.5 to 2.9 degrees Celsius over preindustrial levels by the century’s end, the report found

Doesn't that still mean extinction of nearly all life on earth? What's with the headline saying "safe levels"?

[-] MrMakabar@slrpnk.net 3 points 11 months ago

"relativly safe levels" is 2 degrees, as we did have that a 120,000 years ago without too much of a problem and it going back down again. Save would be 1.5 degrees.

this post was submitted on 20 Nov 2023
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Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.

As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world. About 1C of total warming. Second chart: about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability. Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases. About 0.5C of cooling with large error bars from SO2.

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