this post was submitted on 05 Feb 2024
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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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Hurricanes are getting so intense, scientists propose a Category 6 (wapo.st)
submitted 9 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] silence7@slrpnk.net 8 points 9 months ago

There have been a bunch of 200mph+ ones:

Determining if Category-6-equivalent hurricanes are indeed beginning to ramp up in frequency because of climate change is hampered by our poor ability to observe intense hurricanes. To illustrate: Satellite measurements indicated that the Eastern Pacific’s Hurricane Patricia of 2015 was a Category 5 storm with about 180 mph winds. However, the Hurricane Hunters found that Patricia had peak winds of 205 mph during the time when their plane was in the storm. (Patricia continued to intensify after the Hurricane Hunters left, and is thought to have peaked with winds of an unimaginable 215 mph.) If the Hurricane Hunters had not collected this data, we may not have known whether Patricia had met the threshold of 195 mph winds needed to classify it as a Category 6.