this post was submitted on 17 Dec 2024
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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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[–] [email protected] 6 points 4 hours ago* (last edited 4 hours ago)

Big fucked if true.

I looked it up the other day. We crossed 1c in 2015/2016. News stories at the time talked about how 1.5 might happen as early as 2035 if we don’t get our climate act together.
Yikes.

[–] conicalscientist 9 points 5 hours ago

Grim milestone and barely a peep about it in popular discourse. Everyone needs to prepare personally for the consequences.

For one thing I'm not expecting food prices to level off for the rest of my life. Everything's just going to get more scarce and expensive. Is it possible common foods we enjoy now we may never have again at some point?

On a lighter note. I got a new winter jacket in 2019. Between covid and the rapid decline of cold winters I've barely worn it.

[–] x00z 14 points 6 hours ago (1 children)

I see so many people thinking that this isn't going to be a problem for them because they are thinking of heaters and AC and also that they'll probably die while it's still livable.

But meanwhile they put kids on this world, who will call our generations the worst people to have ever existed.

[–] Lennnny 8 points 6 hours ago

We at least didn't have kids, and I'll probably accidentally drink myself to death anyway.

[–] Pizza_Rat 17 points 7 hours ago

We did it guys 🥳

[–] HappycamperNZ 7 points 8 hours ago (1 children)

Sitting here in a beautiful sunny day, people can be forgiven for thinking its not a big deal.

Until you realise how much energy it takes to raise the temperature of the ocean and land by 1.5. And then that all that energy goes into every weather event forever until we reverse it.

[–] [email protected] 3 points 6 hours ago* (last edited 6 hours ago)

55 degrees F in Massachusetts a week before Christmas. I was driving with my windows down. I got nuthin else. What the shit, man.

[–] [email protected] 15 points 12 hours ago (1 children)

The shape of that curve scares me. I just hope it's a sigmoid curve, not an exponential.

[–] chonglibloodsport 10 points 6 hours ago

True exponentials are rare in nature. Things can look exponential in the short term but are really logistic.

Look at it this way: if the atmosphere gets hot enough it’ll boil off into space and then the earth will cool back down again due to the loss of greenhouse effect.

[–] disguy_ovahea 15 points 13 hours ago* (last edited 8 hours ago)

And with it, another group of mitigation advocates become doomsday acceptors in the scientific community.

[–] [email protected] 18 points 14 hours ago

Yeah, sadly not a suprise

[–] [email protected] 3 points 13 hours ago

I just binged la Palma on Netflix. Here we go.