this post was submitted on 04 Jul 2026
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Climate

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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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Brutal heat cancels Fourth of July events in DC and Philadelphia (www.bbc.com)
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Heatwaves have become more frequent, more intense and longer-lasting because of human-induced climate change. The world has already warmed by about 1.1C since the industrial era began and temperatures will keep rising unless governments around the world make steep cuts to emissions.

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[โ€“] knomie@feddit.org 6 points 3 weeks ago (1 children)

The world has already warmed by about 1.1C since the industrial era began

Where does the 1.1C figure come from? It's about 1.5C for the past years and 1.3-1.4C for the multi-year average.

The only page where I found something starting with 1.1C is here (https://science.nasa.gov/earth/explore/earth-indicators/global-temperature/)

Global temperatures in 2025 were cooler than 2024, with average temperatures of 2.14 degrees Fahrenheit (1.19 degrees Celsius) above the 1951 to 1980 average.

But 1951-1980 is obviously not "since the industrial era began".

[โ€“] Greyghoster@aussie.zone 2 points 3 weeks ago

Global warming has been a serious issue since the early 1800s when industrialisation started based on coal. It got a major turbocharge after the 2 world war when oil was added to coal. There has been 200 years of fossil fuel delivered climate change and global warming. I think when looking at the totality, things will look worse.