this post was submitted on 15 Jun 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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Days after being pummeled with eight inches of rainfall in only just hours — the kind of extreme downpour that supposedly occurs once every 500 years — South Florida continues to be deluged with historic storms and flooding.

The region of the state remains under a flood advisory on Friday after a series of storms dumped between eight and 20 inches of rain over large sections of Florida over the previous three days. Meteorologists expect another two to four inches of rain by Friday night, and some areas may get as much as 10 inches.

This extreme wet weather has left hundreds of people stranded in their homes. This storm system even yielded a tornado that tore through the community of Hobe Sound, north of Palm Beach, on Wednesday, uprooting or destroying at least 20 landmark ficus trees.

According to researchers, climate change both intensifies extreme weather events like tropical storms and floods and makes them more frequent. Florida Gov. Ron DeSantis, a Republican often described as a climate skeptic, has worked to scrub references to the problem from official state documents in his state. Activists like Stevie O'Hanlon, communications director for the Sunrise Movement, argue that kind of denialism will ultimately backfire on the politicians who support it.

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[–] [email protected] 2 points 3 months ago

1 C more temperature -> air can hold 7% more water vapour

...but the peaks of fringe events are quite a bit taller than +1 C. Raising the average by 1 C raises the peaks considerably more.