this post was submitted on 22 Oct 2024
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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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The nation’s first commercial carbon sequestration plant is in Illinois. It leaks. | The locals are worried: “Just because CO2 sequestration can be done doesn't mean it should be done." (grist.org)
submitted 5 hours ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] sinkingship@mander.xyz 2 points 1 hour ago (1 children)

But if CCS operations leak, they can pose significant risks to water resources. That’s because pressurized CO2 stored underground can escape or propel brine trapped in the saline reservoirs typically used for permanent storage. The leaks can lead to heavy metal contamination and potentially lower pH levels, all of which can make drinking water undrinkable.

Can someone explain this to me in a easy way?

As a layman I would be worried of large amounts of CO² suddenly leaking near where people live. But how does it make water undrinkable? I thought some people like their drinks with CO². And where do the heavy metals come from?

[–] gst0ck@lemm.ee 2 points 27 minutes ago

High enough CO2 levels will make the water more acidic and could cause pipes to leach metals into the water.

[–] Greyghoster@aussie.zone 6 points 5 hours ago

Sequestration only is possible if the concentration of CO2 is high enough, like on the exhaust of a coal fired power station. So where is the extra energy coming from to drive the process? Not from renewables as there is insufficient to meet the needs of decommissioning. More fossils have to be burnt paid for by the tax payer, Sequestration is pretty much a smokescreen to.avoid transition from fossil fuels.