this post was submitted on 16 Feb 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] 7 points 8 months ago

The Earth doesn't care how we move things around in our spreadsheets.

[–] [email protected] 2 points 8 months ago

Net zero isn't really well defined or meaningful at any level below the entire globe.

[–] [email protected] 1 points 8 months ago (1 children)

You can get to personal net zero but not with offsets.

See Carbon Dioxide Removal.

[–] [email protected] 3 points 8 months ago (2 children)

At what that costs, it's cheaper to move to a heat pump and induction stove.

[–] [email protected] 2 points 8 months ago (1 children)

You can make biochar at home and it's not expensive. The finished product is a valuable commodity.

[–] [email protected] 2 points 8 months ago (1 children)

Not at anything like the scale that matches typical home heating fossil fuel use unless you're bringing in biological material and then exporting the characoal. And once you're doing that, you're having significant land use impacts and using significant fossil fuels to move the biomass and charcoal. This usually doesn't make sense, especially if you're going to pay the cost of a system designed to limit particulate production.

[–] [email protected] 1 points 8 months ago (1 children)

What you describe (using fossil fuels) is a worst case scenario and not a requirement. I could turn the argument around and say don't use the heat pumps you recommend because after all, they require electricity, which requires fossil fuels. And then where are we?

You say that CDR is expensive, but it's not. As proof I'll give two examples:

  • companies that make and sell biochar
  • regenerative agriculture that sequesters many tons of carbon in soil while being more profitable than conventional agriculture
[–] [email protected] 1 points 8 months ago (1 children)

I've seen the efforts on biochar; there are examples of it being done well, and a lot of it being done badly. Without accounting and auditing to track what's going on, you often don't get great results.

Regenerative agriculture is ill-defined, and there's a lot of fraud in that space when it comes to carbon sequestration claims.

[–] [email protected] 1 points 8 months ago (1 children)

Without accounting and auditing to track what’s going on, you often don’t get great results.

You can say the exact same thing about the things you propose... so again, where are we? Please consider this line of reasoning and ask yourself why you're so quick to use it.

Regenerative agriculture is ill-defined, and there’s a lot of fraud in that space when it comes to carbon sequestration claims.

Can you show me a lot of fraud in regenerative agriculture in the context of USDA NRCS SOM tests? I'd like to see it.

[–] [email protected] 1 points 8 months ago (1 children)

That's too specific for me to turn one up; most of it is in the form of people saying "i'm doing regenerative ag, pay me" and doing no measurement and making all sorts of wild claims.

There are some serious limits to its scale as well.

[–] [email protected] 1 points 8 months ago

That’s too specific for me to turn one up; most of it is in the form of people saying “i’m doing regenerative ag, pay me” and doing no measurement and making all sorts of wild claims.

Big negative claims apparently backed by nothing.

There are some serious limits to its scale as well.

Gabe Brown's regenerative ag farm is 5000 acres. That's a specific claim. You can even visit his farm in person.

[–] [email protected] 1 points 8 months ago

Funnily enough it is for both:

electricity price / 3 + cost of heat pump or stove = gas price

Both gas and electricity price obviously over a longer period of time and the 3 can be higher for better heat pumps. Obviously if you have rooftop solar electricity cost can be lower as well.