this post was submitted on 25 Jan 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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What are the odds that extreme weather will lead to a global food shock? The insurance giant Lloyd’s evaluated the risks in a recent study. (yaleclimateconnections.org)
submitted 9 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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The report looked at “major,” “severe,” and “extreme” scenarios. The authors found that the “major” case would cost the world $3 trillion over a five-year period, which they estimated has a 2.3% chance of happening per year. Over a 30-year period, those odds equate to about a 50% probability of occurrence — assuming the risks are not increasing each year, which they are.

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[–] LilNaib@slrpnk.net 3 points 9 months ago (1 children)

And will you always be allowed enough water for it?

That's an essential element to consider, and the answer is: locally appropriate plants, compost, mulch, rainwater harvesting, and greywater. All of these things will work regardless of municipal water shortfalls, political problems, etc.

Examples of locally appropriate plants: local so-called "native" perennials, and annuals that are well situated for local conditions. For example, tepary beans are great in desert areas while typical beans from most seed packets are not. And conversely, tepary beans don't fare well outside of a desert. Plants evolved growing without us. Picking the right varieties and then giving them a boost with mulch and greywater gives awesome results.

[–] guyrocket@kbin.social 2 points 9 months ago

Very good points.