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submitted 6 days ago by [email protected] to c/[email protected]
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[-] [email protected] 7 points 5 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.

this post was submitted on 12 Jun 2025
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