this post was submitted on 16 Jun 2025
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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.

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Fingerprint of human-caused global warming was likely detectable 140 years ago, far earlier than previously thought (www.cnn.com)
submitted 2 weeks ago by silence7@slrpnk.net to c/climate@slrpnk.net
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The paper is here

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[–] benjhm@sopuli.xyz 14 points 2 weeks ago

Well, it's a kind of stretched thought experiment, to imagine they had precise satellite-like temperature measurements in those days. But if you really want to ask, when did humans first have a discernible influence on the climate, it surely goes back much earlier than that - due to deforestation and associated changes in albedo (as well as CO2), also desertification in some regions (north africa?). I don't see albedo or land-use change in this paper, only fossil emissions.