this post was submitted on 21 Mar 2024
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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.

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Replacing a gas boiler in the UK with a new heat pump would cut emissions by 77-86% (slrpnk.net)
submitted 8 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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From a broader fact check about heat pumps

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[–] Alto@kbin.social 5 points 7 months ago

Properly sized heat pumps are nowhere near as expensive as many people think. It's primarily an issue of needed heating capacity bring massively over estimated. Technology Connections has put out a great video recently that goes over it far better than I could, and he has had a similar experience with his parents as I did mine. The HVAC company wanted to replace with a heat pump of the same size as the furnace. A furnace that had at minimum 2.5× the capacity that they actually needed.