this post was submitted on 27 Feb 2025
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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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[–] Thorry84@feddit.nl 5 points 4 months ago

Good video, but I don't like the format.

Is this made for people with short attention spans? The video is all over the place, it's about AMOC, but also about heatpumps, electric planes and planting trees? All very interesting and good subjects, plus the video is made very well, but I prefer a more deep dive into a single subject. And when other subjects are referenced, I prefer the video to explain what the relevance is to the main topic.

I also like it when a video is kinda realistic and critical. Heatpumps and electric planes are both really important for electrification and moving away from fossil fuels. But a community moving to heatpumps is a much more realistic method in really creating a big change. A single startup doing a very niche electric plane is interesting on video and from a tech standpoint, but does basically nothing for the big picture. It isn't going to help with all of the long haul flights and all of the cargo flights.

Especially in the US so much cargo could be hauled by electric rail instead of relatively short expensive cargo flights or diesel trains. And that's technology that exists already, Europe has had a large scale electric rail system for years. No need for new tech, no need for startups, no need for hyperloop bullshit. Just oldskool electric rail, simple systems, existing technology. The train can run 24/7 so it's fine if it tops out at 100mph. But I understand that's more of a public will, policy and government issue, than an interesting video for the internet.

Also I might have missed it, but what exactly is the best evidence that Atlantic currents are slowing? It might have gone past really fast, where I expected it to be the focus of the video.