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Messages - bosbas

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Arctic sea ice / Re: 2020 Sea ice area and extent data
« on: October 25, 2020, 06:33:32 PM »
Gerontocrat - I have no idea how much of your day is spent on your posts, but I appreciate the fact that you dribble them out over the course of the day. Makes it easy to get to this thread by clicking on one of your posts under "recent posts". Then I usually cursor up to Juan's easy to comprehend daily post, and work my way down through your posts. Your efforts are much appreciated (as well as Juan's)

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Arctic sea ice / Re: 2018 sea ice area and extent data
« on: May 14, 2018, 08:53:21 PM »
THE CENTRAL ARCTIC and the CANADIAN ARCHIPELAGO

The Archipelago is till solid, above 1980's average.

The Central Arctic is very interesting. The February temperature spike really clobbered it, but recovery was complete. But now there is a significant early area loss. Will the much higher area loss so far in the 2010's be repeated.

OTHER SEAS

The Hudson is a consolation prize for bbr2314
Melt is late.
Question:- 
Is late ice melt and above average snow + late snow melt a result of the persistent cold in the NE quarter of Canada, or
Is  persistent cold in the NE quarter of Canada and late ice melt a result of above average snow + late snow melt ?

The Okhotsk melted late and area is now well below the 2010's average.

The St Lawrence melted a week or two early and area is now just bouncing around.

I think I will give the graphs another outing just after May21 - one month before solstice - if people think they are useful.
 

3
Arctic sea ice / Re: 2018 sea ice area and extent data
« on: May 14, 2018, 08:29:38 PM »
ATLANTIC side graphs

The first image is just the Baffin, significant as when it melts out it unplugs the numerous passages into the Arctic Basin proper.

It has been very cold in that N.E. quarter of Canada. Melt is also late in Greenland. Now warmth is starting to show in the Baffin.

Next is the Greenland and Barentz Seas

The Greenland Sea area is still 50,000 km2 greater than on March 1 - the Great Late February temperature spike. I guess there is warming heading north meeting additional ice down the Fram Strait.
The Barents Sea reached a maximum above the 1990's average in early April, but is now reducing strongly.

Next are the Kara and Laptev Seas, both at or above 1980's average. AGW, what AGW?

Too much like hard work. Another coffee required.

4
Arctic sea ice / Re: 2018 sea ice area and extent data
« on: May 14, 2018, 08:03:49 PM »
While area is lower than every year except for 2016, it seems the timing of the onset of serious melting is similar to most years on the chart.
It depends on which bit of the Arctic you look at, so here goes:-

JAXA AREA as at 13th May 2018

For a change, graphs, lots of graphs so probably several posts.

I have taken each sea and ordered them into - Pacific, Atlantic, Central, and the others (sort of bit players).
For each category I have put them into the order in which the melt usually happens.

PACIFIC

The first image has the Bering and Chukchi.

It was as good as over for the Bering by the middle of April (less than 10% of the maximum in the 1980's). Probably 7+ months with ice less than that. If 2018 is now the norm, maximum sea ice will be well under 50% of the maximum of the 1980s.

The Chukchi (after a blip down in late Feb) started losing area consistently about one to two weeks earlier than average and is now well below the 2010's average. How far down will it go?

The next image is the Beaufort and East-Siberian.( We who live in the west say the Beaufort in in the far west of the Arctic, Russians say the East-Siberian is in the Far East.Different points of view).

Both seas have been making a mockery of the expected effect of invasion of warm water from the Pacific, though the Beaufort has just started to lose area.

The next post will look at the Atlantic side. I'm off for a coffee.


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