this post was submitted on 18 Aug 2024
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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:

Anti-science, inactivism, and unsupported conspiracy theories are not ok here.

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Unintended warming: How reduced ship [sulfate aerosol] emissions may accelerate climate change (cpo.noaa.gov)
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[–] lukeb28@lemm.ee 3 points 1 month ago (2 children)

What do you mean by the hydropower? I'm not familiar with this 'poster child'

[–] Iceblade02@lemmy.world 14 points 1 month ago* (last edited 1 month ago) (2 children)

Usually, for a hydro power plant to be effective they require a dam to be built. This significantly changes the surrounding landscape by flooding large areas of land and also reduces the ability of fish to travel through whichever waterway is dammed up.

Enviromental activists often decry and try to prevent these types of developments because of this - they consider these changes to ruin the local environment.

On the other hand, hydropower is possibly the most useful source of renewable electricity, having a large implicit storage capacity that can be released at any moment.

[–] DaTingGoBrrr@lemmy.ml 3 points 1 month ago

Fish ladders can be built for them to cross dams but the flooding is a problem

[–] VirtualOdour@sh.itjust.works 3 points 1 month ago

Same with trains, in the UK swampy famously protested the building of a high speed rail line because it's construction resulted in the destruction of an old growth forrest

[–] toynbee@lemmy.world 2 points 1 month ago

FYSA: https://en.m.wikipedia.org/wiki/Poster_child

As described in the second half of that article, it's a colloquialism.