Support the Arctic Sea Ice Forum and Blog

Author Topic: Arctic Ocean salinity, temperature and waves  (Read 71868 times)

uniquorn

  • Nilas ice
  • Posts: 1923
    • View Profile
  • Liked: 1009
  • Likes Given: 187
Re: Arctic Ocean salinity, temperature and waves
« Reply #550 on: February 22, 2020, 01:24:36 AM »
this might help - ascat2010-2019 - temporary post as it is large, pls download
removed
« Last Edit: February 23, 2020, 07:33:10 PM by uniquorn »

uniquorn

  • Nilas ice
  • Posts: 1923
    • View Profile
  • Liked: 1009
  • Likes Given: 187
Re: Arctic Ocean salinity, temperature and waves
« Reply #551 on: February 22, 2020, 10:33:14 PM »
A rammb look at the large low concentration leads north of Greenland (north is left).
It's a shame itp116 profiler is dead.
https://go.nasa.gov/38RQqHM feb16-22  ctr

rammb update https://col.st/rAYkY  morbid fascination
« Last Edit: February 23, 2020, 10:35:25 PM by uniquorn »

uniquorn

  • Nilas ice
  • Posts: 1923
    • View Profile
  • Liked: 1009
  • Likes Given: 187
Re: Arctic Ocean salinity, temperature and waves
« Reply #552 on: February 24, 2020, 12:22:55 PM »
Kaleschke sic leads overlaid onto gmrt bathymetry, feb15-24.
Tech note - used contrast and unsharp mask to keep some greys

blumenkraft

  • Young ice
  • Posts: 3414
  • Fans of Hans Ø Club - circa 2018
    • View Profile
  • Liked: 1243
  • Likes Given: 1991
Re: Arctic Ocean salinity, temperature and waves
« Reply #553 on: February 24, 2020, 12:56:08 PM »
It's a shame itp116 profiler is dead.

 :'(

How confident can we be it's actually dead? I mean, is there a chance it's coming back again?
Everyone who can must self-isolate.

uniquorn

  • Nilas ice
  • Posts: 1923
    • View Profile
  • Liked: 1009
  • Likes Given: 187
Re: Arctic Ocean salinity, temperature and waves
« Reply #554 on: February 26, 2020, 02:01:16 PM »
If it 'comes back' from dead we can be confident it's alive ;)

Follow up on the large low concentration leads north of Greenland.
https://go.nasa.gov/32tcuWI , feb16-26, Kaleschke SIC leads inset. There are some differences as refreeze progresses.  ctr
Beginning to see a pattern in the wave like low concentration lines from previous years
« Last Edit: February 26, 2020, 02:06:57 PM by uniquorn »

blumenkraft

  • Young ice
  • Posts: 3414
  • Fans of Hans Ø Club - circa 2018
    • View Profile
  • Liked: 1243
  • Likes Given: 1991
Re: Arctic Ocean salinity, temperature and waves
« Reply #555 on: February 26, 2020, 02:42:03 PM »
If it 'comes back' from dead we can be confident it's alive ;)

That's not 'it's dead for good' as an answer. I guess i'm staying optimistic then. ;)
Everyone who can must self-isolate.

uniquorn

  • Nilas ice
  • Posts: 1923
    • View Profile
  • Liked: 1009
  • Likes Given: 187
Re: Arctic Ocean salinity, temperature and waves
« Reply #556 on: February 26, 2020, 09:05:22 PM »
ascat, north of greenland, day51-56, forward and back. Fram/FJL gap intake drift extends as far as the Lomonosov ridge (vertical line to left of pole hole), temporarily.
Ice slips more easily on higher salinity water? or more turbulence along the ridge?

added an avi of ascat, lomonosov ridge area, 2010-2019 for those few that would like to see if there is a similar previous occurrence since 2010. mp4 quality after conversion and compression not really good enough.
« Last Edit: February 27, 2020, 12:33:04 AM by uniquorn »

Glen Koehler

  • Frazil ice
  • Posts: 188
    • View Profile
  • Liked: 174
  • Likes Given: 265
Re: Arctic Ocean salinity, temperature and waves
« Reply #557 on: February 27, 2020, 07:38:45 PM »

Speaking of gyres ...
https://insideclimatenews.org/news/26022020/climate-oceans-weather-fishing-gyres-gulf-stream-sea%20level

   I suppose at ca. 1 km per year it won't happen anytime soon, but looking at the north end of that North Atlantic gyre loop in the map included with the article
https://insideclimatenews.org/sites/default/files/styles/colorbox_full/public/image_large/OceanGyres529px.png?itok=yoTQ6XPg
makes me wonder if someday it will loop over Greenland and go straight across the Arctic.  That would be "Atlantification" on steroids.


« Last Edit: February 27, 2020, 07:50:25 PM by Glen Koehler »

Glen Koehler

  • Frazil ice
  • Posts: 188
    • View Profile
  • Liked: 174
  • Likes Given: 265
Re: Arctic Ocean salinity, temperature and waves
« Reply #558 on: February 27, 2020, 07:55:19 PM »
Edited quote
Arctic ice sets speed limit for major ocean current
Quote
The Beaufort Gyre is an enormous, 600-mile-wide pool of swirling cold, fresh water in the Arctic Ocean, just north of Alaska and Canada. In the winter, this current is covered by a thick cap of ice. Each summer, as the ice melts away, the exposed gyre gathers up sea ice and river runoff, and draws it down to create a huge reservoir of frigid fresh water, equal to the volume of all the Great Lakes combined.

 ..... Scientists at MIT have now identified a key mechanism, which they call the "ice-ocean governor," that controls how fast the Beaufort Gyre spins and how much fresh water it stores.

"If this ice-ocean governor goes away, then we will end up with basically a new Arctic ocean," Marshall says......
 
The research paper
If the Beaufort Gyre can reach the Atlantic Ocean, the reverse is not so far-fetched.  I guess this is what comes with an increasingly "Equable climate" where the poles are no longer isolated from the midlatitudes.  Which does not bode well for ASI longevity.
« Last Edit: February 27, 2020, 11:59:56 PM by Glen Koehler »

uniquorn

  • Nilas ice
  • Posts: 1923
    • View Profile
  • Liked: 1009
  • Likes Given: 187
Re: Arctic Ocean salinity, temperature and waves
« Reply #559 on: February 29, 2020, 02:43:48 PM »
Beaufort ice drift relatively static at the moment.
update on Kaleschke SIC leads, feb22-29, ctr.
Anticyclone building up over the pole will likely disrupt the pattern a bit

uniquorn

  • Nilas ice
  • Posts: 1923
    • View Profile
  • Liked: 1009
  • Likes Given: 187
« Last Edit: March 05, 2020, 05:00:41 PM by uniquorn »

uniquorn

  • Nilas ice
  • Posts: 1923
    • View Profile
  • Liked: 1009
  • Likes Given: 187
Re: Arctic Ocean salinity, temperature and waves
« Reply #561 on: March 17, 2020, 09:14:08 PM »
update on the low concentration ice north of greenland using Kaleschke SIC leads. ctr
« Last Edit: March 17, 2020, 10:13:20 PM by uniquorn »

uniquorn

  • Nilas ice
  • Posts: 1923
    • View Profile
  • Liked: 1009
  • Likes Given: 187
Re: Arctic Ocean salinity, temperature and waves
« Reply #562 on: March 17, 2020, 10:31:34 PM »
must take a look a the beaufort again soon. Here is whoi itp114
https://www.whoi.edu/page.do?pid=165196