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submitted 1 year ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[-] Sir_Osis_of_Liver@kbin.social 73 points 1 year ago

Positive feedback loops, how do they work?

We've known about this for decades. An example: heating causes permafrost to melt releasing CO2 and methane, which cause more heat to be trapped, which melts more permafrost, which releases more green house gasses, etc.

Positive feedback loops tend to be very unstable, and can lead to runaway situations.

[-] Notyou@sopuli.xyz 28 points 1 year ago

Can't wait for all those ice caps to go away and stop reflecting all the heat that they do reflect being white. It'll just add to it.

[-] Droechai@lemm.ee 34 points 1 year ago

And when the last ice is gone we will finally have revenge for the Titanic

Hey I found time to laugh in between my doomsday crying.

Thanks. :)

[-] WalrusDragonOnABike@kbin.social 10 points 1 year ago

Not if blackhat has anything to say about it: https://xkcd.com/2829/

[-] Cannacheques@slrpnk.net 4 points 1 year ago

Looks like it might be a good idea to paint sections of buildings black and white, colour coded for heating lol

[-] Notyou@sopuli.xyz 3 points 1 year ago

We actually paint the top of some helicopters to make the ride cooler for everyone inside.

[-] LillyPip@lemmy.ca 3 points 1 year ago

Worse, when that influx of arctic water shuts down the North Atlantic current and others that cycle heat and cold throughout the world. That will be very bad for quite a lot of us.

Can't wait until we turn the planet into Venus 2.0

Ive read somewhere that living in the clouds is in theory still possible. :)

I'd like to live on the ground with the grass and the trees, thanks

[-] GreenMario@lemm.ee 8 points 1 year ago

"go touch grass" will be the new "kill yourself" in a century ๐Ÿ˜‚

[-] burgersc12@sh.itjust.works 4 points 1 year ago

Sorry, best I can do is underground bunker

pawn stars

[-] burgersc12@sh.itjust.works 7 points 1 year ago

The article goes out of its way to claim this isn't the case. Theres a line that says something like there is no extra heat in the pipeline.

[-] Spzi@lemm.ee 10 points 1 year ago

I followed the links in that quote:

Climate models have consistently found that once we get emissions down to net zero, the world will largely stop warming; there is no warming that is inevitable or in the pipeline after that point.

Neither addresses tipping points. They seem to talk about something else entirely, like wether a model assumes constant atmospheric concentration, or constant emissions, that kind of difference.

[-] burgersc12@sh.itjust.works 3 points 1 year ago* (last edited 1 year ago)

Ah, i see what you are saying now, sorry

[-] grabyourmotherskeys@lemmy.world 7 points 1 year ago

People are really bad at conceptualizing exponential change from feedback. Our brains expect incremental change. I think that's one of the reasons people can't know accept what is happening.

"I know things are changing, but it's only a bit each day, and it can go like that for years and it won't be that bad."

this post was submitted on 13 Oct 2023
291 points (96.2% liked)

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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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