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Author Topic: Arctic Ocean salinity, temperature and waves  (Read 37187 times)

b_lumenkraft

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Re: Arctic Ocean salinity, temperature and waves
« Reply #300 on: June 22, 2019, 11:40:52 AM »
30m 100m Mercator model, 01.06 to 21.06.

Atlantic waters are close to penetrating the Beauford Gyre.

(Thank you Uniquorn for the correction)
« Last Edit: June 22, 2019, 03:12:33 PM by b_lumenkraft »

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #301 on: June 22, 2019, 03:07:54 PM »
That looks like 92m salinity. jun16 shown here with noaa bathymetry.
edit: chukchi plateau keeping most of the atlantic water away for now,
 unless you mean along the CAA
« Last Edit: June 22, 2019, 05:07:55 PM by uniquorn »

TeaPotty

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Re: Arctic Ocean salinity, temperature and waves
« Reply #302 on: June 22, 2019, 06:05:20 PM »
30m 100m Mercator model, 01.06 to 21.06.

Atlantic waters are close to penetrating the Beauford Gyre.

(Thank you Uniquorn for the correction)

Hey b_lumenkraft, do you have a link to that animated arctic SST map you posted?

b_lumenkraft

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Re: Arctic Ocean salinity, temperature and waves
« Reply #303 on: June 22, 2019, 06:36:54 PM »
Hey b_lumenkraft, do you have a link to that animated arctic SST map you posted?

That's salinity though, but sure! :)

http://bulletin.mercator-ocean.fr/en/PSY4/animation

FishOutofWater

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Re: Arctic Ocean salinity, temperature and waves
« Reply #304 on: June 22, 2019, 09:17:25 PM »
That salty Atlantic water cools and sinks at the 300m level. The water doesn't penetrate the Beaufort gyre, but it does mix at depth with the cold fresher water that exits the gyre  and slowly moves towards the Fram strait at depths below 300m.

http://bulletin.mercator-ocean.fr/en/permalink/PSY4/animation/3/20190101/20190621/2/4

The sea bottom topography of the Arctic ocean and seas plays a key part in controlling the transport of salinity and heat in Arctic waters.

b_lumenkraft

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Re: Arctic Ocean salinity, temperature and waves
« Reply #305 on: June 22, 2019, 09:44:26 PM »
Thanks, FOOW.

I guess i need to look more at these things. Never noticed it spins counterclockwise in this depth.

Here is the linked data as a GIF, speed up.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #306 on: June 22, 2019, 10:13:10 PM »
thankfully it doesn't (yet). Mercator salinity 318m, jan1-jun21, 32days/sec. (not optimised)
Maybe an ezgif optimisation problem or an accidental reverse?
Still looking forward to more dates on your animations ;)
« Last Edit: June 22, 2019, 10:19:08 PM by uniquorn »

b_lumenkraft

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Re: Arctic Ocean salinity, temperature and waves
« Reply #307 on: June 22, 2019, 10:19:12 PM »
I'm very confused right now.  ???

Kinda late here, will check tomorrow what's the problem with ezgif.

FishOutofWater

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Re: Arctic Ocean salinity, temperature and waves
« Reply #308 on: June 23, 2019, 04:31:39 AM »
That part of the ocean is confusing. There are 2 major factors to consider. One is the Coriolis effect. Pacific water entering the Arctic from the Bering strait tends to turn right, thanks to the Coriolis effect which is related to the conservation of angular momentum and the vorticity of water masses. Fresh water from Siberian rivers tends to hug the Siberian shores if it is moving counterclockwise. Likewise, incoming salty Atlantic water tends to hug the Siberian continental shelf.

It all turns into a spinning mess when the waters meet in the Chukchi sea. Note that the Alaska coastal current carrying Pacific water is moving in the opposite direction from the water and ice in the Beaufort gyre. When the Beaufort high is intense there is no ACC. Warm salty water from the Atlantic layer upwells along the shelf margin when the easterly winds are strong and persistent, often in the month of May. The ACC returns, typically this time of year, when the easterly winds die down near the coast.

And that's not all. This is also a part of the Arctic where water "densifies" and sinks to considerable depths. So it's no wonder the animations are confusing you.

b_lumenkraft

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Re: Arctic Ocean salinity, temperature and waves
« Reply #309 on: June 23, 2019, 08:33:30 AM »
Thanks so much, FOOW! I bet this post is not only useful for me. :)

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #310 on: June 26, 2019, 04:02:37 PM »
update on whoi itp110. Only 3 or 4 floes away from open water now. No surprises in the charts yet. Perhaps the temperatures above 80m depth are starting to rise a little. The profiler is struggling to move from depth today probably due to high drift speed. https://www.whoi.edu/page.do?pid=163197
animation of temp/salinity, day158-177.(jun7-26)
whoi itp110 profile, jun26
worldview terra modis approximate location, jun19-26
« Last Edit: June 26, 2019, 04:15:31 PM by uniquorn »