• alvvayson@lemmy.world
    link
    fedilink
    English
    arrow-up
    3
    ·
    edit-2
    1 year ago

    The IPCC calculations were always criticized for being overly optimistic. Anyone following this debate knew that we would hit 1.5 C sooner rather than later.

    We are definitely going to hit 3 degrees in our lifetime, once the melting tundras release their methane store.

    • Kale@lemmy.zip
      link
      fedilink
      English
      arrow-up
      2
      ·
      1 year ago

      Melting tundra releases methane, accelerating the increase in temperature. Rising temperature reduces polar ice, making oceans absorb more heat, accelerating heating. Climate pattern changes cause more frequent and larger wildfires, accelerating heating.

      There are probably processes that work to reduce heating as it increases that I’m not aware of, but there are a lot of positive feedback processes which is concerning.

      I believe the IPCC 1.5C was criticized because it included effects of a carbon sequestering process that hasn’t been invented yet. That’s pretty optimistic.

      • ChickenLadyLovesLife@lemmy.world
        link
        fedilink
        English
        arrow-up
        1
        ·
        1 year ago

        There are probably processes that work to reduce heating as it increases

        Nuclear war, for one. In a more naturalistic vein, asteroid strike or massive volcanic eruptions. People worried about climate change just refuse to look on the bright side.

      • Graphine@lemmy.world
        link
        fedilink
        English
        arrow-up
        0
        arrow-down
        1
        ·
        edit-2
        1 year ago

        Which is why I support the idea of setting up bases on the Moon and/or Mars.

        Everything is accelerating, and nobody gives a fuck to do anything before it’s too late. I hate the argument that NASA doesn’t push its budget to prevent CC or even Space X. Because stopping CC is a global effort on a colossal scale. It’s not going to work until it’s too late. Might as well get off this rock.

        Edit: Very fucking optimistic of you all