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submitted 10 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[-] Sir_Osis_of_Liver@kbin.social 74 points 10 months 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 10 months 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 10 months ago

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

[-] PoisonedPrisonPanda@discuss.tchncs.de 13 points 10 months ago

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

Thanks. :)

[-] WalrusDragonOnABike@kbin.social 10 points 10 months ago

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

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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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