this post was submitted on 03 Feb 2024
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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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The sea surface temperature is leaving the chart (climatereanalyzer.org)
submitted 9 months ago by eatthecake@lemmy.world to c/climate@slrpnk.net
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Is this really about a change to maritime fuels? I'm genuinely curious because the change is extreme.

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[–] protist@mander.xyz 9 points 9 months ago* (last edited 9 months ago)

I'd wager it's a combination of the cumulative effects of climate change and the first El Niño since 2015-16 developing following three consecutive years of below average ENSO temperatures. We'll probably see global average temperatures moderate a bit after this El Niño ends, and the current forecast is for it to subside by summer. But gods help us when the next El Niño comes around, and then the next, and then the next...

Also, if you look at the slope of the mean and standard deviation lines for the start of the year, this year is no different in that regard, so this very recent increase just seems more stark due to the unusual decrease that happened right before. It's just the starting was way higher than average. Well outside 2 standard deviations higher 😳