this post was submitted on 28 Nov 2023
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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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Electric heat costs way less than reports say, new data suggests (www.theguardian.com)
submitted 2 years ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] neanderthal@lemmy.world 12 points 2 years ago (1 children)

No surprise. Not a physicist, but I would think moving electrons back and forth through wires would be more efficient than pumping gas molecules through pipes, burning it, and losing heat due to venting the exhaust. Safer too. No risk of explosion or CO poisoning. Breakers and fuses cause electricity to fail safe(er) than gas.

The 120/240 going to residences isn't necessarily fatal to humans. Fires are better than explosions and poison gas. Breakers protect against shorts causing both dangerous conditions. They also protect from fires by limiting the current draw through lines.

[–] ShadowRam@kbin.social 6 points 2 years ago

I think the idea is that you get more efficient heating out of burning Natural Gas -> Electricity -> Heat Pump than just burning the natural gas for heat.

Even better if you skip the natural gas -> electricity part and use Nuclear/Hydro/Solar/Wind

[–] blazera@kbin.social 5 points 2 years ago

Way less than reports say, report says

[–] sonori@beehaw.org 1 points 2 years ago

Basically a US agency tries to forecast how much the average american will spend on various utilities over the winter broken down by all gas appliances and heat, all electric appliances and heat, all fuel oil heating, etc. Thr just of the article is that it doesn’t, but probably should, differentiate between resistive heating and heat pumps, and since most modern heat pumps give you three to four times the heat per watt that kind of makes a big difference.

It also predicts your utility bill for a given tech if you use a given type of energy, not your energy useage. Ergo your fridge and lights are counted in that perdiction if you use electric but not if you use gas. Potentally useful info if used as a forecast for what you have, but not intended to compare apples to apples.