this post was submitted on 09 Aug 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] 10 points 3 months ago (7 children)

Sensationalist headline as far as I can tell.

(I wrote the same in a different sub as this seems to have been posted all over)

Comparing carbon emissions and only telling that it is more than another plants/industrial sites, is pretty useless. It needs to be normalized to emissions/kWh so it would be a useful comparison. That alone gives me pause as to how accurate/honest the comparison is.

For example: the plant could be the largest in the country which would mean emoting more is normal. Or it could be the smallest and have a disproportionate emission rate.

It also seems like the spokesperson of the plant claims that the wood is sourced from sustainably managed forests, and though I won't take that at face value, I see how that could further mitigate impact compared to what the sensationalist headline claims.

I don't have time right now to do much more research on this specific site such as where the forest is, transportation emissions, processing emissions, etc. However, it is clear that the author of the article didn't do any research either, and/or intentionally cherry picked a way to display the data to come up with an article that would drive traffic.

[–] [email protected] 6 points 3 months ago (4 children)

Additionally, The CO2 emitted from a biomass electricity generation plant isn't new CO2 pumped out of the ground. It's the CO2 that was already captured from the atmosphere by living things. On balance, net carbon emission is zero, since the input fuel is a net negative CO2 source.

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

It's probably more complex than this. For example, every tree you remove mean less carbon capture in the world.

[–] [email protected] 2 points 3 months ago

If you remove a mature tree and replace it with a young one, you will actually increase uptake as the growing tree will absorb more CO2 than a mature one will.

However, I agree that it is complex because you need to take a long term view and there are always risks. For example a wild fire would offsetting the equation as the young trees are more vulnerable.

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