this post was submitted on 31 Oct 2023
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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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Ideally, rezoning and infrastructure changes would reduce the need for school buses. We don't have the time though, so this is a win. Hopefully production can ramp up and governments can create incentives for schools to buy these instead of dead dino powered buses.

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[โ€“] [email protected] 8 points 1 year ago (3 children)

7% at the end of a ~300mi roundtrip rural run is really cutting it close ๐Ÿ˜ณ although if the journey is mostly flat I think it's OK, as long as there's enough range to go via any diversion if the road is blocked.

They could definitely get a bigger battery onto that roof, the main expense there probably would be customising the aircon to fit around a roof battery pack instead of buying one off the shelf

The electric buses here all have roof mounted batteries and they last pretty long - the chinese Yutongs are out all day with the heating on, but our domestic built ones seem to last only 3/4 of the day, and after that they vanish with the old diesel ones appearing on routes until the night

[โ€“] [email protected] 16 points 1 year ago

Keep long routes diesel or gas for now and wait for battery tech to improve. Even if 70% of buses are moved to electric, it is still a big chunk of emissions that are cut.

[โ€“] [email protected] 3 points 1 year ago (1 children)

Or maybe just put a charging point in at thge driver's lunchtime rest stop

[โ€“] [email protected] 3 points 1 year ago

Lunchtime rest stop?

Where I'm from bus drivers drive from 7am - 9am and then go home and come back for 3:30pm - 5:30pm.

They essentially get the entire work day off. Not just lunch.