Prof James Hansen says pace of global heating has been significantly underestimated, though other scientists disagree

Summary

Renowned climate scientist James Hansen warns that limiting global warming to 2°C is no longer possible due to underestimated climate sensitivity and reduced sun-blocking pollution from ships.

His study suggests warming could hit 2°C by 2045, increasing extreme weather and accelerating ice melt. The research challenges IPCC models, arguing for a higher climate sensitivity estimate.

Hansen calls for carbon taxes, nuclear energy, and geoengineering research.

He warns of an Atlantic ocean current collapse within 20-30 years.

  • AA5B@lemmy.worldEnglish
    44·
    21 hours ago

    Wow, wasn’t it just last year when they took the 1.5° target off life support and called it?

    Now the 2° is dead? Are we killing off 2.5° by summer?

    • HubertManne@moist.catsweat.com
      11·
      17 hours ago

      lots of folks said it was not going to happen. Last year was really recognizing there was absolutely no way its happening because it had actually passed it already so there is no way we were not passing it as we have. you will see something when we pass it about how now its impossible not to im sure soon enough.

      • AA5B@lemmy.worldEnglish
        11·
        16 hours ago

        The scary part is that seems to make no difference (to people, corps, countries). Has anyone changed anything based on passing that target? Will the anyone change their minds or behavior with this new projection?

        Maybe I’m just cynical with the disaster of the US elections - we were finally making a little progress, finally had reason to hope, but we just threw that away

    • PaleRider@feddit.ukEnglish
      16·
      19 hours ago

      All of last year, every time they said this month was the hottest on record, I kept saying “So far…”

      • KinglyWeevil@lemmy.dbzer0.comEnglish
        3·
        12 hours ago

        It is currently the beginning of Feb and our normal weather here is a few days of snow, usually a few inches, usually at least one large to shut everything down (like 10+"). Overcast. In the 20s and 30s (F).

        I went skiing on Saturday and have never seen so much literally bare ground outside of the very early or very very late season.

        I went to a protest today. Parked a distance away and walked. It was 68°. It feels like the end of April. We got almost no snow - only like a foot unseasonably early in the middle of November. The wildfire season this year is going to be rough, and the summer will be brutal.