this post was submitted on 12 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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$500K Dune Built to Protect Coastal Homes Lasts Just 3 Days (www.thedailybeast.com)
submitted 8 months ago by db0@lemmy.dbzer0.com to c/climate@slrpnk.net
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My suggestion is to sell them to Ben Shapiro

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[–] IWantToFuckSpez@kbin.social 32 points 8 months ago* (last edited 8 months ago) (1 children)

Dutch dunes also formed naturally over centuries before the Dutch decided to add man made ones.

[–] pro_user@lemm.ee 11 points 8 months ago

Exactly! Dutch dunes are mostly natural: beach sand is blown onto the land and started to pile up, eventually forming dunes. Even in the places where there are buildings facing the sea, they are at least 100(‘s) meters away from the coastline.

The man-made dikes are much more than just a pile of sand. To quote wikipedia:

Artificial levees require substantial engineering. Their surface must be protected from erosion, so they are planted with vegetation such as Bermuda grass in order to bind the earth together. On the land side of high levees, a low terrace of earth known as a banquette is usually added as another anti-erosion measure. On the river side, erosion from strong waves or currents presents an even greater threat to the integrity of the levee. The effects of erosion are countered by planting suitable vegetation or installing stones, boulders, weighted matting, or concrete revetments. Separate ditches or drainage tiles are constructed to ensure that the foundation does not become waterlogged.

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