this post was submitted on 17 Mar 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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A cargo ship’s ‘WindWing’ sails saved it up to 12 tons of fuel per day (www.popsci.com)
submitted 7 months ago by ProdigalFrog@slrpnk.net to c/climate@slrpnk.net
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[–] space@lemmy.dbzer0.com 14 points 7 months ago

You can't use traditional sails on a ship of that size and mass, they wouldn't make much difference and would need a large crew to operate.

If you want to apply the concept to modern ships, you need to design stronger sails (e.g. made of metal), you need to make it easy to operate with a small crew and you need to also design them in a way that doesn't interfere with cranes in ports.

It's not as easy as just slapping sails and calling it a day.