this post was submitted on 13 Oct 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:

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

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[–] Sir_Osis_of_Liver@kbin.social 68 points 1 year ago (21 children)

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 26 points 1 year ago (4 children)

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 33 points 1 year ago (2 children)

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 (1 children)

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.

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