this post was submitted on 23 Sep 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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[–] [email protected] 6 points 4 weeks ago* (last edited 4 weeks ago)

Should have been doing this since the oil embargos in the 70s.

GSI’s researchers used modelling to predict the impact of different kinds of government interventions – taxation, subsidies and regulatory mandates – in encouraging decarbonisation in energy generation, heating, and light and heavy road transport.

The study found taxation – hitherto the most commonly used policy – to be the weakest intervention, while regulatory mandates had the biggest impact, quickly leading adoption of clean technologies to levels that triggered positive tipping points in related industries.

Four such mandates were assessed and are recommended by the report, including: phasing out coal power by 2035 for developed countries and by 2045 for developing countries; requiring a rising proportion of heating appliance sales to be heat pumps from 2025, reaching 100% by 2035; requiring a rising proportion of car sales to be zero-emission vehicles, reaching 100% by 2035; and requiring a rising proportion of truck sales to be zero-emission vehicles, reaching 100% by 2040.