this post was submitted on 15 Sep 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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Oil companies granted licences to store carbon under the North Sea (www.theguardian.com)
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[–] PeepinGoodArgs@reddthat.com 5 points 1 year ago (1 children)

...in the end it’s the only practical way we can currently sequester all of the CO2 we dumped into the atmosphere over the last 200 years of coal burning.

And that's why it's unrealistic. That's a lot. And it's not only in the air, it's in the oceans, too. The scale at which CCS needs to work is...honestly almost impossible for me to wrap my head around.

Not to mention, oil companies use CCS to justify their business model. Because, if you can remove CO2 in the atmosphere, why not dump more?

[–] Buelldozer@lemmy.today 1 points 1 year ago* (last edited 1 year ago)

The scale at which CCS needs to work is…honestly almost impossible for me to wrap my head around.

Me too. The amount of CO2 that needs to be captured and sequestered is so enormous that it boggles the mind. Still, everything helps and the best time to start is now.

Because, if you can remove CO2 in the atmosphere, why not dump more?

I'm not supportive of this line of thinking unless we can reliably capture at least 500% of yearly global CO2 emissions. There's some future merit to their argument but not right now.