this post was submitted on 26 Sep 2024
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Climate - truthful information about climate, related activism and politics.

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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.

Recommended actions to cut greenhouse gas emissions in the near future:

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Returning to British suburbia from the Brazilian Amazon is always disconcerting, but it has been doubly weird in the past few days because the London commuter belt has been inundated with volumes of rain that normally belong in the tropics.

Mini-tornadoes, flash floods and the dumping of a month’s worth of rain in a single day have flooded transport hubs, high street pubs, and the shrubs of semidetached homes.

If that sounds unnatural, it is. This weather does not belong in the safe, predictable, home counties of England. At least, not in a normal state of affairs.

But ever-greater combustion of fossil fuels has turned the world’s climate on its head. In the past week, the northern latitudes are behaving like the equatorial margins...

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