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Author Topic: The Nares Strait thread  (Read 518421 times)

Alphabet Hotel

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Re: The Nares Strait thread
« Reply #1900 on: June 20, 2019, 06:09:38 PM »
That shows The Nares has taken virtually no ice out of the Lincoln Sea for a week.

Instead, it is rapidly melting in the lincoln sea. WHICH IS WAY MORE CRAZY AND TROUBLING!

Now that I've watched the latest a few more times, I think you're right. You can see the floes starting to lose their shape in the last couple of frames. I didn't know that was not normal.

Tor Bejnar

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Re: The Nares Strait thread
« Reply #1901 on: June 20, 2019, 07:51:26 PM »
Also, melt ponding went from nil to very much happening.
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be cause

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Re: The Nares Strait thread
« Reply #1902 on: June 20, 2019, 08:51:21 PM »
'Normal' is a sheet of ice with some fractures .. Nares is mostly asleep on the surface in June .. b.c.
2007 + 5 = 2012 + 4 = 2016 + 3 = 2019 ...

Tor Bejnar

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Re: The Nares Strait thread
« Reply #1903 on: June 20, 2019, 09:19:36 PM »
Export from Lincoln Sea to Nares Strait has started up again.  GIF uses DMI Sentinel images from June 17, 19 and 20.

Viewing images at the DMI site down Nares Strait: Hall Basin got the memo and is filling up with ice from the north, but Kane Basin has a gyre recycling its few floes (for now).
« Last Edit: June 20, 2019, 09:25:44 PM by Tor Bejnar »
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b_lumenkraft

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Re: The Nares Strait thread
« Reply #1904 on: June 20, 2019, 09:23:26 PM »
Good, there is radar! In the visual, you can't see anything. All cloudy.

Thanks, Tor for the update. :)

b_lumenkraft

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Re: The Nares Strait thread
« Reply #1905 on: June 21, 2019, 08:54:59 AM »
01.06. to 20.06. plus forecast 29.06. (the last still frame)

Mercator sees the current not to pick up again for now.

b_lumenkraft

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Re: The Nares Strait thread
« Reply #1906 on: June 21, 2019, 01:20:03 PM »
So the ice floes are now all the way down to Petermann.

I don't think though, there is a (strong) current ATM because when there is, the floe movement is normally confined to the right side of the strait.

b_lumenkraft

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Re: The Nares Strait thread
« Reply #1907 on: June 22, 2019, 08:47:02 PM »
Finally some nice cloud free frames in a row.

Tide pushed floes back into Lincoln, forming a polynya in the west again.

Still not looking like there was a surface current.

b_lumenkraft

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Re: The Nares Strait thread
« Reply #1908 on: June 23, 2019, 09:21:15 AM »
The situation is unchanged. Upper NS is full of ice floes, a few ones made it past Petermann - tidal driven. No surface current apparent.


gerontocrat

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Re: The Nares Strait thread
« Reply #1909 on: June 23, 2019, 10:44:01 AM »
The situation is unchanged. Upper NS is full of ice floes, a few ones made it past Petermann - tidal driven. No surface current apparent.
And yet if you look at Aluminium's latest gif in the melting season thread, the impression is stuff is charging down the strait. Illusion?
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
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b_lumenkraft

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Re: The Nares Strait thread
« Reply #1910 on: June 23, 2019, 10:55:52 AM »
Idk really.

Possible explanations i can think of:

Floes are moving still due to tides, going in and out of the strait in the north.
Fast ice in the strait becomes loose.
The Kane gyre is still active, also causing floe movement.

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oren

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Re: The Nares Strait thread
« Reply #1912 on: June 23, 2019, 03:56:52 PM »
In Aluminium's animation I also noticed ice moving east instead of south at the Fram exit. I think there are some wind effects in the region negating the movement induced by the currents.

gerontocrat

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Re: The Nares Strait thread
« Reply #1913 on: June 23, 2019, 05:50:03 PM »
In Aluminium's animation I also noticed ice moving east instead of south at the Fram exit. I think there are some wind effects in the region negating the movement induced by the currents.
When Fram export reduces, Greenland melt increases.
"Para a Causa do Povo a Luta Continua!"
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b_lumenkraft

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Re: The Nares Strait thread
« Reply #1914 on: June 24, 2019, 08:37:28 AM »
A comparison upper vs. lower NS (22.06. 09:41h to 24.06. 01:27h UTC)

I see a surface current in lower NS.
The upper NS still looks like mainly tidal driven to me.

(click to play, both)

b_lumenkraft

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Re: The Nares Strait thread
« Reply #1915 on: Today at 02:06:52 PM »
What the heck are those (click GIF to unveil mystery)?

Someone lost their triangle ruler in Petermanns fast ice??

Tor Bejnar

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Re: The Nares Strait thread
« Reply #1916 on: Today at 03:55:31 PM »
On the melting thread, a comment was posted that some might interpret as implying there has been continuous export.  Cross posted here:
Quote
steady Fram and Nares export
Actually, export via Nares Strait has been near 'squat' for two weeks.  Images from DMI Sentinel - June 15, 19 and 24.  There is a poll about the large floe "She" that sits at the top of these three frames (half cut off).
I make no comment about what export will look like this week or beyond.
« Last Edit: Today at 04:56:30 PM by Tor Bejnar »
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BenB

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Re: The Nares Strait thread
« Reply #1917 on: Today at 05:45:28 PM »
I should have expressed myself better. :D

But I think that overall Nares has been reasonably busy this season, and the ice hasn't been blocked on too many occasions compared with other years.

b_lumenkraft

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Re: The Nares Strait thread
« Reply #1918 on: Today at 06:10:04 PM »
Tor, since we are at it pointing fingers, it also has to be mentioned that comrade Gerontocrat reported a low in Baffin and blames it all on the east Greenland current [1] totally not telling that there is no replenishment from NS at the moment and this might contribute to the situation. :o

While Nares Strait compresses his arse cheeks in order to keep dat ice in Lincoln, he doesn't even get praised. Poor narrow hero...

[1] https://forum.arctic-sea-ice.net/index.php/topic,2533.msg208224.html#msg208224

oren

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Re: The Nares Strait thread
« Reply #1919 on: Today at 08:06:07 PM »
Strangely, despite the very active Nares, Baffin has been tracking low all season.

b_lumenkraft

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Re: The Nares Strait thread
« Reply #1920 on: Today at 08:06:56 PM »
Oh, good point!

gerontocrat

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Re: The Nares Strait thread
« Reply #1921 on: Today at 08:23:28 PM »
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

b_lumenkraft

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Re: The Nares Strait thread
« Reply #1922 on: Today at 08:35:06 PM »
Yeah, kind of a flop my theory there.  :-X

gerontocrat

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Re: The Nares Strait thread
« Reply #1923 on: Today at 09:56:25 PM »
Yeah, kind of a flop my theory there.  :-X
You have company? SHE a bit of a flop too?
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
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b_lumenkraft

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Re: The Nares Strait thread
« Reply #1924 on: Today at 10:05:10 PM »
SHE a bit of a flop too?

I did say She will likely crack before even entering the strait, but boy did i thought in another direction. Who would have thought She would hang around for so long with us?