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Midnight@slrpnk.net to Climate - truthful information about climate, related activism and politics.@slrpnk.net · 10 months ago

Are we underestimating global warming?

www.vox.com

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Are we underestimating global warming?

www.vox.com

Midnight@slrpnk.net to Climate - truthful information about climate, related activism and politics.@slrpnk.net · 10 months ago
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  • rah@feddit.uk
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    10 months ago

    I don’t know where we are going.

    Famine, war, collapse of civilisation, rise of warlords, loss of knowledge. Everywhere. Within our lifetimes.

    Just look at the first of those and the rest follow. Think about how likely it is that our civilisation will be able to grow crops in the quantity it has up until recently, even five years from now, given the increased frequency and severity of extreme climate events.

    • trainsaresexy@lemmy.world
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      10 months ago

      That’s what I find confusing. We (global we) have already had enormous crop failures and disasters recently. https://www.agweb.com/news/crops/crop-production/farm-bureau-finds-2022-weather-disasters-amounted-21-billion-crop-losses these events can get amplified on social media and then it’s disorientating to me when the effects slip away.

      I think what I want is data:

      https://ourworldindata.org/agricultural-production

      I don’t doubt it’s going to get worse, but I’m struggling to understand the details of that. You’re saying famine in Chicago, full on North Korean style society? War, yes I said already we already do that all the time. Not new. Warlords, not new. Loss of knowledge? Vague. I’m sorry but this is what I’m talking about. How did you reach these conclusions, if you know?

      • rah@feddit.uk
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        10 months ago

        PS: https://lemm.ee/post/45711739

        “Climate change: UN report says planet to warm by 3.1 C without greater action | Reuters” https://www.reuters.com/business/environment/climate-set-warm-by-31-c-without-greater-action-un-report-warns-2024-10-24/

Climate - truthful information about climate, related activism and politics.@slrpnk.net

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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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