Arctic Feedbacks Stopping Winter Sea-Ice Refreezing, Two Videos


Arctic Feedbacks Stopping Winter Sea-Ice Refreezing: Part 1 of 2 // Apr 18, 2019

I discuss the very latest cutting edge scientific understanding on a powerful Arctic feedback that keeps regions of open, ice-free Arctic from refreezing during the dead of winter–December 1st to February 28th:


  • Albedo feedbacks are NOT happening at this time since the Arctic is in total 24/7 darkness.
  • What IS happening: turbulent heat flux (sensible + latent) plus increased upwelling long-wave radiation brings heat from the ocean up into the lowest 1.5 km of the atmosphere;
  • More downwelling long-wave radiation prevents sea-ice formation.
  • This feedback increased 8.9% per year from 1979 to 2016.

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Arctic Feedbacks Stopping Sea-Ice Refreezing: Part 2 of 2 // Apr 18, 2019

Second video, of two.  Continues where first video, left off.


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About paulbeckwith

Well known climate science educator; Part-time Geography professor (climatology, oceanography, environmental issues), University of Ottawa. Physicist. Engineer. Master's Degree in Science in Laser Optics, Bachelors of Engineering, in Engineering Physics. Won Association of Professional Engineers of Ontario gold medal. Also interested in investment and start-ups in climate solutions, renewable energy and energy efficiency. Avid chess player, and likes restoring old homes. Married with children.
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