this post was submitted on 26 Apr 2026
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Climate

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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:

Anti-science, inactivism, and unsupported conspiracy theories are not ok here.

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[–] Tiresia@slrpnk.net 40 points 1 month ago

tl;dr: Another paper on the Atlantic meridional overturning circulation shutdown just dropped, bumping the reduction of circulation by the year 2100 from 32 ± 37% to 51 ± 8%. This means it is now certain that there will be catastrophic consequences through this particular form of climate change. Capitalist media don't tell you this because they're capitalist.

The catastrophic consequences include, but are not limited to:

  • Even more extreme hurricanes in the Caribbean

  • European biosphere freezing to death in cold snaps

  • European infrastructure collapsing in cold snaps

  • Faster-rising sea levels on the north American east coast

  • Extra CO2 released from the Antarctic Ocean

[–] RePsyche@lemmy.world 27 points 1 month ago (1 children)

:-(. Been watching this happen for much of my life. No sane person wants this to happen. sigh.

[–] Delafin@slrpnk.net 4 points 1 month ago

When I was young, this was a hypothetical scenario to explain what the AMOC was. Now it's our actual trajectory. Wish I was 13 again.

[–] Aceticon@lemmy.dbzer0.com 13 points 1 month ago

The part about the economist which "modelled" the impact of climate change and came up with hilariously optimist results that aren't anywhere close to those from the Scientists from hard-sciences is just so typical.

Economists lying with models (i.e. basically using Mathematics as a layer of complexity hidding purposeful lies, so as to deceive those with little familiary with the Scientific Method or modelling) is THE main tool that has been used to push Neoliberal politics for 5 decades and created the shit we're living in.

I worked in Finance and am intimatelly familiar with how you can make Mathematical Models to produce whatever the fuck effect you want: mainly by the formulas you chose for your model and by chosing what types of inputs it takes you can make a "machine" which will produce a specific fable from genuine real-life data.

Mind you, the Scientists and other people with Science Training won't be deceived, but that doesn't matter because those "models" and their "results" (generally produced in Think Tanks funded by the very people whose interests are, by an amazing coincidence, served by politicians acting as if the model is genuinelly representative) aren't meant to convince domain experts, they're meant as technocratic "arguments" for articles and opinion pieces in the Press to sway public opinion (or at the very least spread doubt on the consensus of the actual domain experts) and as a cover for the bought up politicians to chose the policies benefitting the interests of those who are or promise to be "good friends" to them.

[–] Birch@sh.itjust.works 1 points 1 month ago

Well that was a fun read just before bed.