this post was submitted on 01 Aug 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.

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[–] [email protected] 6 points 3 months ago

It isn't specifically about flooding. Flooding is a fairly manageable risk in the western Netherlands. As strange as it may sound for an area that is below sea level. The true problem for Gouda is its subsoil. The city is built on a thick peat layer, which is subsiding. Gouda is by far the most vulnerable historic city in that regard.

As you can see on the photo in the article, the water level in some canals is like 10 or 20 cm below the street level. Water so shallow will start creeping upward in your walls. The streets and to a lesser extent buildings are slowly subsiding. So why not just lower the water level? Well, this accelerates the oxidation and compression of peat, causing faster subsiding. You could heighten the street, but the extra weight will cause more subsidence. This is the conundrum Gouda is in.