Ocean current ‘collapse’ could trigger ‘profound cooling’ in northern Europe – even with global warming - Carbon Brief
www.carbonbrief.org
A “collapse” of key Atlantic ocean currents would cause winter temperatures to plunge across northern Europe, overriding the warming driven by human activity.
  • Asafum@feddit.nl
    22·
    4 days ago

    One of the reasons we don’t call it global warming as much as opposed to the more accurate, climate change.

    In the US we had some dumbshit Republican walk in with a snowball saying “iF GlObAl WaRmInG iS rEaL wHy Is ThErE sNoW!?”

      • Doc_Crankenstein@slrpnk.netEnglish
        9·
        4 days ago

        We know that but the average numpty doesn’t understand the difference between climate and weather and that ignorance is being exploited through manipulation of rhetoric.

  • humanspiral@lemmy.ca
    7·
    3 days ago

    In short term, the trends are opposite to Europe or its coastal Atlantic having colder winters, and this opposite trend has many reasons to continue with more warming.

    1. Tropical Atlantic is getting warmer. Even if current flow northward slows down, the amount of heat flowing could stay about the same.

    2. Air termperatures are warming entire oceans, but especially North Atlantic from North American westerlies.

    3. Arctic ocean is not melting at an accelerated rate. It is not freezing as much in winter. This is feedback from hotter oceans in summer, and there is in fact an extreme record low Arctic sea ice volume now and this winter. https://ocean.dmi.dk/arctic/icethickness/thk.uk.php

    4. That feedback pattern comes from early summer sea ice extent loss. Hot open Arctic ocean is more the result of baking in the sun for 20+ hours per day then AMOC. Ice regrowth is slowed. Number of days ice free is as important as air temperature

    5. Europe’s winter weather depends on coastal Atlantic sea temperature. That can keep getting warmer despite slower AMOC from above factors.

    • TranquilTurbulence@lemmy.zipEnglish
      4·
      3 days ago

      Well, looking at the temperatures you see in northern Canada, the summers are like +35 °C and it rains all the time, but the winters go down to -35 °C. Occasionally, the temperature will go down to -40…-50 °C, but fortunately that doesn’t last the whole week.

  • truthfultemporarily@feddit.org
    5·
    4 days ago

    The thing about AMOC collapse is that its partially triggered by Greenland glaciers melting so this would be something that would be irreversible. Even if we got all CO2 back out of the atmosphere it may not restart. Then we would be in a situation where big parts of Europe would be against carbon neutrality or reversing climate change, because it would make Europe even colder.

    • Aksamit@slrpnk.net
      22·
      3 days ago

      Global warming has accelerated significantly and by most metrics now, we’re looking to hit 4c by the end of the century. There’s a preprint of the paper the video is based on here if you’d prefer, but the video link opens to a time stamp with a graph you might find interesting.

      Reversing climate change is a pipe dream and ‘carbon neutrality’ is little more than a marketing term. We have literally done everything possible as a species to cause this catastophic climate collapse we’re in, and basically fuck all to mitigate it.

      It’s pointless to worry about how eco friendly the dying gasps of humanity are going to be, we’re not surviving this.