this post was submitted on 27 Nov 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] 4 points 11 months ago* (last edited 11 months ago) (1 children)

That's not what I was saying at all.

What I was saying is that single-family house in a car-dependent neighborhood, even one that's a net-zero passivehaus, is likely to cause more overall greenhouse gas emissions than an apartment in a walkable city center, even an old, uninsulated one, simply because the former forces the occupants to drive everywhere but the latter doesn't.

Sure, we need to regulate industrial emissions at the source instead of transferring blame to consumers, but housing and transportation emissions have nothing to do with that. Increasing energy efficiency of housing really would do a lot to lower emissions, but ending car-dependency of housing would do even more.

[–] [email protected] -1 points 11 months ago* (last edited 11 months ago) (1 children)

"That's not what I was saying at all."

Oh that's too bad. Good that both things can be true.

"Increasing energy efficiency of housing really would do a lot to lower emissions, but ending car-dependency of housing would do even more."

And yet still be a drop in the bucket.

[–] [email protected] 2 points 11 months ago

And yet still be a drop in the bucket.

That's not true. Housing and (car) transportation are a large fraction of total greenhouse gas emissions.