this post was submitted on 16 Oct 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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Global Electricity Demand Is Rising Faster Than Expected, I.E.A. Says | A surge in power use worldwide could make it harder for nations to slash emissions and keep global warming in check. (www.nytimes.com)
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[–] WhatAmLemmy@lemmy.world 4 points 1 month ago* (last edited 1 month ago)

This was always going to be the case, and the unfounded optimism has always pissed me off.

Similarly, an extensive historical analysis of technological efficiency improvements has conclusively shown that energy efficiency improvements were almost always outpaced by economic growth, resulting in a net increase in resource use and associated pollution.

GHG emissions are still at their greatest in history and ALL renewables to date have been completely absorbed by growth in consumption.

Jevons paradox and the rebound effect pretty much guarantee that we'll continue consuming fossil fuels until their use is forcefully banned. Renewables haven't even begun to reduce their consumption, and they won't before it's too late to even the prevent the <= 3C that's currently locked in.