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1.5C climate target ‘deader than a doornail’ (www.theguardian.com)
submitted 1 day ago by Aksamit@slrpnk.net to c/climate@slrpnk.net
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[-] Nyssa@slrpnk.net 2 points 1 day ago* (last edited 1 day ago)

Yeah, I think given current trajectories somewhere between RCP 3.4 and 4.5, with emissions peaking around 2050. Given technological and political headwinds, I just can't see emissions peaking in 2080 or 2100 with growth rates already slowing globally and peaking in North America and Europe

this post was submitted on 18 Nov 2024
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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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