this post was submitted on 25 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:

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[–] [email protected] 20 points 1 year ago (3 children)

This looks like what they call a bifurcation point in complexity theory, the point at which a small change in the parameters of the system leads to a big qualitative change. The environment has been absorbing heat and greenhouse gases but staying relatively stable. But this year, it feels like things have suddenly shifted to a new scary equilibrium.

[–] Zeth0s 9 points 1 year ago* (last edited 1 year ago)

"Crossing a saddle point" in other areas of physics

[–] [email protected] 9 points 1 year ago (3 children)

Are we getting to the part where feedback loops start running wild?

[–] Nudding 8 points 1 year ago
[–] [email protected] 3 points 1 year ago

yup. they started going about a decade ago when the permafrost started to melt.

[–] [email protected] 2 points 1 year ago

Let us all watch the world burn as we see that capitalism propaganda worked just long enough for so it's almost too late now

[–] neanderthal 2 points 1 year ago* (last edited 1 year ago)

Since we all love capitalism, I wonder if GHG and warming work like compounding in business.

A little bit might not seem like much at first, but the old chess board and rice story.

At a consistent 5% more GHG, say we get 5% more bad things in a year. Say GHG and bad things are both 100.

  • Year 1 is +5 = 105
  • Year 2 is +5.25. = 110.25
  • Year 3 is +5.5125 = 115.7625
  • ....
  • Year 30 is +20.58 = 432.19

If you just added 5 per year for 30 years you just get 250. With compounding it is almost twice as bad at a mere 5% annual compounding. If you go with, monthly, daily, or continuous (e^x) compounding, it is even worse.

Speaking of capitalism, understanding compounding is they key to wealth. Once a person gets on the good side of it (assets vs debt) they just get richer. If you keep accumulating debt, you get poorer and poorer. Wealth inequality without government intervention is just math. Hard work, super intelligence, etc aren't as big of factors as luck and environment to have those traits or the biggest, the starting factor. Consider the prior example and run the number with a 200 starting point.