this post was submitted on 24 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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‘You can walk around in a T-shirt’: how Norway brought heat pumps in from the cold | Device installed in two-thirds of households of country (www.theguardian.com)
submitted 11 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] JoBo@feddit.uk 1 points 11 months ago

Ground source heat pumps are not air source heat pumps. They're not an option for people without either very large gardens for horizontal installation, or access for very large machinery to dig the holes to install them vertically.

The claims you have seen likely came from a pro-carbon lobbyist or someone with a badly-installed heat pump. Air source isn't as efficient as ground source but they are cheaper to run, as long as the house is reasonably well-insulated, has large enough radiators or underfloor heating, and enough air circulates around the pump.