this post was submitted on 09 Jan 2025
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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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Falsehoods around the L.A. fires are proliferating on the right | Anything to keep the realities of climate change from spreading. (wapo.st)
submitted 6 days ago* (last edited 6 days ago) by silence7@slrpnk.net to c/climate@slrpnk.net
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[โ€“] silence7@slrpnk.net 11 points 6 days ago (1 children)

There are two different parts to that:

  1. What was the ignition source, which is currently unknown
  2. What caused it to go from a tiny fire to a huge fire very quickly, which is the result of having a couple of fairly wet years, followed by a very dry year, combined with hot dry winds. A warming world is in part responsible for those conditions.
[โ€“] RvTV95XBeo@sh.itjust.works 2 points 5 days ago

You're really downplaying the winds here. Hurricane force winds with gusts north of 80 mph and <10% relative humidity grounded all air traffic, and these fires spread and grew in hilly areas inaccessible via ground vehicles.

Sometimes you're just totally fucked and there's nothing you can do but get out of the way.