this post was submitted on 30 Dec 2023
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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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Electrify All the Big, Noisy, Belching Trucks (www.nytimes.com)
submitted 10 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[โ€“] MrMakabar@slrpnk.net 4 points 10 months ago (1 children)

In a train a single train driver can transport a hundred containers. In a truck it is one. Similar story for other types of freight. At the same time electric trains are incredibly efficient, do not need recharging and are a common well understood technology. So you already have economy of scale for electric trains, whereas hydrogen trucks are extremely rarer.

The only situation hydrogen trucks are better then trains, is transporting a bit of cargo to a very remote location.

[โ€“] Hypx@kbin.social -2 points 10 months ago

Except you have to have overhead powerlines. Not feasible in every location. Otherwise, your trains are diesel powered.