this post was submitted on 03 Dec 2023
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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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[–] sour@kbin.social 16 points 11 months ago (3 children)
[–] mojo@lemm.ee 4 points 11 months ago (1 children)

Woah there, we've got to liberate countries for some reason

[–] floofloof@lemmy.ca 4 points 11 months ago

The USA could "liberate" them for their supply of wind. Scotland had better watch out.

[–] Telorand@reddthat.com 3 points 11 months ago (1 children)

On a practical level, that will probably not happen for a long time. My understanding is that most high performance lubrication is petroleum-based, even if only in part. We'd have to find alternative sources for those lubricants before we could completely drop oil.

[–] MrMakabar@slrpnk.net 4 points 11 months ago (1 children)

We have natural oils and we are good enough in organic chemistry to turn that into what we need. The amounts needed are so small that it basically does not matter.

[–] Telorand@reddthat.com 2 points 11 months ago (1 children)

I'm not being pedantic, but do you have examples of natural oils that we could use as viable replacements? I would seriously love to learn about them.

[–] Shirasho@lemmings.world 12 points 11 months ago

I'll believe it when it actually happens. Until then it is platitudes as usual.

[–] Hyggyldy@sffa.community 6 points 11 months ago (1 children)

Without major reforms to how politicians can get money this is just a bunch of rich people jerking off. We will never be free of coal and oil when our politicians are all sold in the dollar store.

[–] MrMakabar@slrpnk.net 4 points 11 months ago (1 children)

If the alternatives are cheaper then it will change. Coal is mostly used to produce electricity, so when solar and wind can compete they will start lobbying as well against coal as a competitor. Combined with citizens working towards and end of it, that can really change something. That is also true for things like evs and oil, gas heating and heat pumps and so forth.

[–] sonori 3 points 11 months ago

Except money is not the only factor. Solar and Wind may be cheaper, but they are paid for upfront while oil and gas are effectively subscription based. Nations and companies like having the ability to cut off and sanction poorer country’s power grid for instance, since even just the threat of it can keep them from doing anything too radical. While it may be a factor in politics, i really don’t see OPEC and the executives of major oil companies letting go of that power lightly.

[–] lntl@lemmy.ml 5 points 11 months ago (1 children)

No date was given for when the existing plants would have to go...

Unless legislation is passed, it's bullshit.

[–] silence7@slrpnk.net 3 points 11 months ago* (last edited 11 months ago)

The reality is that the US has shut down a large chunk of its coal-burning power plants as uneconomic already.

This is largely an agreement to 'do what is cheap' which is the kind of thing which happens with relatively little government intervention (though some intervention can speed the process up)

[–] huginn@feddit.it 4 points 11 months ago

This is just the international commitment: internally the US was committed to passing off by 2035.

Which is fucking insane. We should be off coal by 2024.