this post was submitted on 11 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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[โ€“] hanrahan@slrpnk.net 3 points 1 week ago (1 children)

That misunderstands the problem of climate change.

A managed phase out was a solution 20-30 years ago, nothing but drastic change can work now. After about 2c (or thereabouts) theres no meaningful way of coming back from tipping points and civilisations lost from there. We're likely to have emitted enough for 2c to be locked in, in about 4 or 5 years.

We need a 10% emissions cut per annum, at keast and more to be cautious, that means ditching low hanging fruit now, like no flying, no cruise ships, no personal jets, no water craft, cut defence expenditure by 50% etc, so harder stuff, like closing roads and car parks and buildibg medium density small homes to house those from the needed managed abandonment of places like Miami, Las Vegas, Phoenix etal using the sliver of emissons budget left

Incremetalism is just denail wrapped in a diffent colored shroud, that's whats getting nothing done now as emissons keep increasing.

What most people think needs doing is a few solar panels and ecars when they get aroubd to it i.e the ones surveyed, what needs doing is the complete reworking of the political and economic systems we live under, likely dissolving nation states etc.

Now we can do this in a hectic, best we can kind of way ... or ... nature will do it for us and it will be beyond traumatic but it will happen.

[โ€“] MrMakabar@slrpnk.net 2 points 1 week ago

10% per annum are also increments.