this post was submitted on 06 Jan 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.

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Can $500 Million Save This Glacier? A bold engineering project might show a way to slow sea-level rise — and bring new imagination to the fight against climate change. (www.nytimes.com)
submitted 10 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] Track_Shovel@slrpnk.net 10 points 10 months ago (1 children)

While this would certainly help the glacier from breaking apart, the effort required would be imense and a geotechnical nightmare. Building dikes above ground is tough enough as is.

On top of that we are warming so quickly. I don't see how this would stop the sheet from melting from air temperature/solar radiation

[–] Wanderer@lemm.ee 3 points 10 months ago* (last edited 10 months ago)

I'd imagine the water makes in melt a lot quicker.

Test it. On a cold day at like 4c or in your fridge. Put a large ice cube on something insulating and put a similar ice cube in a large bucket of water.

It's why if you go through the ice into the water you should roll around in the snow. The most important thing is to be dry.