this post was submitted on 17 Sep 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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BBC News - Antarctic sea-ice at 'mind-blowing' low alarms experts (www.bbc.co.uk)
submitted 1 year ago by [email protected] to c/[email protected]
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The sea-ice surrounding Antarctica is well below any previous recorded winter level, satellite data shows, a worrying new benchmark for a region that once seemed resistant to global warming.

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[–] [email protected] 3 points 1 year ago

Incredibly worrying. I've been keeping my eye on this. Now, going into an el Niño charged summer with an already significantly lower sea ice extent is potentially catastrophic. Not only because of the albedo effect but for penguin populations too.