this post was submitted on 11 Jul 2023
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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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Scientists designate Canadian lake as ground-zero for the Anthropocene, Earth's new epoch (www.france24.com)
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[โ€“] [email protected] 9 points 1 year ago

Scientists designate Canadian lake as ground-zero for the Anthropocene, Earth's new epoch

Yay!

Layered sediment at the bottom of Lake Crawford -- laced with microplastics, fly-ash spread by burning oil and coal, and the detritus of nuclear bomb explosions -- is the single best repository of evidence

Oh, it's a bad thing. The lake is so covered in man-made garbage it's being used as evidence that we should classify a new "epoch" on earth's timeline defined by everything being covered in waste products produced by humans.

[โ€“] [email protected] 3 points 1 year ago

I grew up near Crawford Lake. I remember there being a little visitors centre with these horrific looking jars of preserved lamprey eels that I guess they fished out of the lake. As I recall, the lake is special because it's particularly deep and stagnant. Particulate matter settles on the bottom and remains undisturbed for thousands of years.