this post was submitted on 17 Mar 2024
299 points (97.8% liked)

Climate - truthful information about climate, related activism and politics.

5229 readers
555 users here now

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:

Anti-science, inactivism, and unsupported conspiracy theories are not ok here.

founded 1 year ago
MODERATORS
silence7@slrpnk.net
299
A cargo ship’s ‘WindWing’ sails saved it up to 12 tons of fuel per day (www.popsci.com)
submitted 8 months ago by ProdigalFrog@slrpnk.net to c/climate@slrpnk.net
29 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[–] KoalaUnknown@lemmy.world 11 points 8 months ago (2 children)

The biggest downside I could see is the sails getting in the way of cranes.

[–] ProdigalFrog@slrpnk.net 16 points 8 months ago (1 children)

According to that video, they fold out of the way. I'm not sure if they currently fold on the real ones. The article mentions:

the 125-feet of height added by WindWings could potentially complicate docking in many locations. According to Jan Dieleman, president of Cargill’s Ocean Transportation business, they’re already working to address such issues.

Which seems to imply they don't. Their solution of modifying ports to accommodate the sails might mean the folding aspect wasn't viable?

[–] Zpiritual@lemm.ee 6 points 8 months ago

Not sure about this one example but working in the industry and following the development of wing sails the ones I've seen will fold one way or the other. This example in the article is probably a prototype or even experimental implementation to test the efficency.

Examples of folding sails in development: https://www.theoceanbird.com/oceanbird-wing-560/

https://terntank.com/2023/02/sail-into-the-future/

[–] Stoney_Logica1@lemmy.world 2 points 8 months ago

You wouldn't need them in port so make them easy to disconnect or compact into a smaller space.