this post was submitted on 17 Mar 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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[–] 0110010001100010@lemmy.world 0 points 8 months ago (1 children)

Hundreds of years of innovation in water travel, and we come back to a sail. Granted, a metal one, but still a fucking sail.

[–] ColeSloth@discuss.tchncs.de 0 points 8 months ago (1 children)

There's a reason they quit, though. It's slow and doesn't let you go in every direction. The midline area of earth has winds that move mostly towards west, while the north and south portions blow mostly east.

For those curious, these sails save 12 tons per day. The average cargo ship uses around 200,000 tons per day, so around 6% better fuel economy.

[–] zaphod@feddit.de 0 points 8 months ago

The 12 tons are a best case and they represent 37% of this ship's fuel consumption, that would be ~32.5 tons a day, on average it saved 3.3 tons, ~10%.

[–] beatle@aussie.zone 0 points 8 months ago (1 children)

Looks like this only works for bulk haulage and wouldn’t be compatible with intermodal freight (shipping containers)

[–] tryptaminev@feddit.de 0 points 8 months ago

Why wouldn't it? Those sails are 37m tall. I found stacked containes to be at max stacked up to 25m.

[–] hperrin@lemmy.world 0 points 8 months ago (1 children)

Imagine reinventing sails and thinking you’re innovating.

[–] tryptaminev@feddit.de 0 points 8 months ago

You'll be shocked to find that electric cars have been invented 50 years before Benz came around with what today is considered the "invention of the automobile" by slapping an internal combustion engine on it.