this post was submitted on 30 Dec 2024
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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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Glen Sannox: 'Green' ferry has higher emissions than diesel ship - BBC News (www.bbc.co.uk)
submitted 1 week ago by sabreW4K3@lazysoci.al to c/climate@slrpnk.net
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Were electric ferries not a viable option?

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[–] Buelldozer@lemmy.today 15 points 1 week ago

The new ship carries 20% more people and 40% more cars while having lower NO and SO emissions. It will have more methane emissions simply because it uses that fuel and the old ferry didn't, which is a good chunk of the reason it's "CO2 Equivalent" emissions seem high.

The article does a great job of not telling the reader about emissions per mile between the old ship and the new one, nor does it tell you the emissions per passenger mile, both of which are vital to know if the new ship is a net benefit.