this post was submitted on 12 Jan 2025
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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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[–] henfredemars@infosec.pub 12 points 2 days ago

Warmest year on record so far.

Don’t worry, it won’t be the warmest for very long at all.

[–] Pyr_Pressure@lemmy.ca 4 points 2 days ago (1 children)

I can hardly even tell that it's winter right now. Walking around in a t-shirt when most years I would be in a puffy winter coat and gloves and a touque.

[–] benjhm@sopuli.xyz 1 points 13 hours ago* (last edited 13 hours ago)

Yet here in Belgium I'm walking around in a puffy winter coat hat and gloves, whereas preceding winters would wear less. The point is, isolated observations don't tell us much about climate. In winter, warm and cold anomalies travel in waves (Rossby waves) around the pole, and mostly offset each other in the hemisphere average. Problem is that human population distribution evolved, over centuries, such that most people live in places with comfortable climates - and when we change the typical wave patterns, such distribution may no longer be a good adaptation to the new climate.

[–] galaskorz@discuss.online 7 points 2 days ago (1 children)

Finally, a climate headline that’s not “oh my god how could it be so hot?! Maybe climate change is a real thing?!”

[–] silence7@slrpnk.net 4 points 2 days ago* (last edited 2 days ago) (1 children)

Written by Gavin Schmidt whose career has been defined by heading one of the long-term temperature measurement projects

Edit: auto-correct gave me something other than "measurement" so fixed it.

[–] galaskorz@discuss.online 3 points 2 days ago

Well, we need more realists like him. With data, and the balls to say we aren’t making progress.