this post was submitted on 19 Sep 2024
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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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Global heating is making El Niño and La Niña forecasts less reliable, BoM says (www.theguardian.com)
submitted 2 months ago by [email protected] to c/[email protected]
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"The Bureau of Meteorology is shifting the way it communicates about climate phenomena such as El Niño and La Niña, because global heating is making predictions based on the past less reliable.

This week the bureau kept the country on a “La Niña watch” and said if the climate system in the Pacific does develop, it’s likely to be short-lived and weak.

Historically, La Niña events – where warmer waters gather to the north of Australia – have been associated with cooler and wetter conditions from across north-western Australia to the south-east. El Niño events are often warmer and drier.

But Dr Karl Braganza, national manager of climate services at the bureau, said climate change and the amount of heat being added to the oceans made those old relationships less reliable.

Climate change may not have “broken” them, he said, “but the number of times when the climate is inconsistent with what we saw in the past will only increase”...

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[–] [email protected] 1 points 2 months ago

the Book of Mormon is not a reliable source for scientific information