this post was submitted on 23 Feb 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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"Arctic Climate Collapse! This time it's REALLY flipped!!" - Just have a Think (www.youtube.com)
submitted 13 hours ago by dumnezero@piefed.social to c/climate@slrpnk.net
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The Arctic region has been a massive store of carbon for thousands of years. Now it's warming between 3 and 7 times faster than the global average and that carbon is escaping into our atmosphere. The latest research suggests that more than a third of it is now a net emitter! And in case you're wondering...that's NOT good!

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[–] humanspiral@lemmy.ca 15 points 12 hours ago

record low Arctic sea ice extent, but the extreme is in sea ice volume. https://ocean.dmi.dk/arctic/icethickness/thk.uk.php

7000km^3 lower than just 2004-2013 average. Just a normal summer will set big record low next fall, potentially with blue ocean at north pole, and likely further record lows next winter.

Low ice extent is driven primarily by hot summer arctic ocean that is fed by early springs of last year. Air temperatures are not of extreme record warmth.