this post was submitted on 02 Mar 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] 4 points 6 months ago* (last edited 6 months ago) (1 children)

We live in Maryland, and our house has a 30 year old natural gas furnace in the basement. When that goes we are definitely planning on switching to something more eco-friendly. Anyone else on here in this area who has a heat pump? I admittedly have not done a ton of research on them or if they are effective in our climate zone.

[–] [email protected] 7 points 6 months ago

I'm not in your area, but the big thing is to find a contractor familiar with heat pumps. A lot of them just haven't done them before, and will say anything to get you to choose something they're familiar with.

[–] [email protected] 0 points 6 months ago (1 children)

Only works on super well insulated homes. If you have a slightly drafty house they'll never get you there and you'll need supplemental heating still.

[–] [email protected] 7 points 6 months ago

This depends enormously on the house, and fixing heat leaks is a way to cut your bills whether or not you install a heat pump.

[–] [email protected] 10 points 6 months ago* (last edited 6 months ago) (1 children)

kind of similar situation up here in nova scotia, they work really well for our situation

it's good to see people finally converting!

[–] [email protected] 6 points 6 months ago (1 children)

The technology is making it possible... They can work "as heat pumps" in far colder climates than they used to not all that long ago. Allowing them to avoid switching over to electric strips heat longer.

I'm not wishing our system to have problems but the new compressors are pretty amazing! But of course, like everything, they're expensive too :)

[–] [email protected] 7 points 6 months ago* (last edited 6 months ago) (1 children)

The cost isn't that bad if you are up to DIY. You can get 3 ton/36k btu mini split units that will heat/cool 1500 sqft for around 3k.

You have to have power pulled to the outdoor compresor, but otherwise you drill a first sized hole in your external wall, mount the internal "head" unit over the hole and run the power/compressor/drainage hoses down to the outside unit. Bend the compressor hoses into a bundle, plug everything in, turn it on. Lots of great youtube guides.

Depending on what the electrical runs costs you, you may be able to get it all done for 5k.

[–] [email protected] 3 points 6 months ago

That's true, I was mostly thinking of full central air/heat systems.