this post was submitted on 07 Oct 2024
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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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[–] Treczoks@lemmy.world 26 points 1 week ago (3 children)

Wow. That's fast. Yesterday, they were talking about cat 3, ten or twelve hours ago the prediction was cat 4, and now we are at cat 5. And it still has to gobble up loads of energy from the Yakuzzi of Mexico, formerly knows as Golf of Mexico.

Is there actually a definition for cat 6?

[–] SlopppyEngineer@lemmy.world 27 points 1 week ago* (last edited 1 week ago) (2 children)

No official definition for cat 6. They stopped at cat 5 because its definition is basically complete devastation, as in all infrastructure broken and no normal building left standing. Cat 6 after that is the land torn away until bedrock remains, I guess.

[–] silence7@slrpnk.net 15 points 1 week ago

Since that scale was created, we've greatly improved building codes, so it might actually make sense.

[–] Flocklesscrow@lemm.ee 2 points 1 week ago

Back to Square one

[–] satanmat@lemmy.world 9 points 1 week ago (1 children)

As below there isn’t a Cat 6. However they have talked about adding it.

[–] Treczoks@lemmy.world 5 points 1 week ago

Given the temperature in the gulf, and future years with even more global warming, this might be a good idea.

[–] njm1314@lemmy.world 7 points 1 week ago

Last report I heard says it's probably going to weaken a bit before landfall though due to wind shear. Though still potentially a cat 4.

[–] TheOubliette@lemmy.ml 6 points 1 week ago (1 children)

Milton Friedman is back and picking up where he left off.

[–] Flocklesscrow@lemm.ee 3 points 1 week ago

"The responsibility of low pressure systems is to generate profit for shareholders, duh."