this post was submitted on 15 Sep 2023
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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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Odds that 2023 will be Earth’s hottest year have doubled, NOAA reports (www.washingtonpost.com)
submitted 1 year ago by silence7 to c/climate
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There’s now a greater than 93 percent chance 2023 will surpass 2016 as the planet’s warmest year

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[–] m88youngling 1 points 1 year ago* (last edited 1 year ago) (1 children)

I get what they're trying to say, and it's very concerning, but the headline is slightly misleading. I think earth's hottest year would probably be during it's formation when the surface was molten rock lol

[–] silence7 1 points 1 year ago

It's the hottest in 125,000+ years, likely several million, which would mean hotter than since modern humans first walked the earth. I don't think people much care that it was hotter during the Hadean Eon.