Open Water Visible at North Pole Camera 1, Cracks Visible at Camera 2

North Pole Open Water

(Image source: APL)

Last week, North Pole Camera 1 began to record visual images of cracks on the surface of sea ice. Now, just one week later, open water is visible in the same location. Meanwhile, cracks are beginning to show up in the vicinity of North Pole Camera 2.

On the ice near these cameras, our Persistent Arctic Cyclone, which has continued to thin the Arctic’s Central ice since late May, is beginning to have a very visible effect. Though the storm center has moved away, leaving these areas mostly sunny, the agitated ocean beneath the ice is making its presence known through cracks and open stretches of water near both of these cameras.

At North Pole Camera 1, to the right hand side of the most recent shot, open water is visible. The best way to see it is to look straight ahead at the anemometer, whose top establishes the horizon. Then, look to the right. There a growing wedge of blue-grey, indicating open water, appears. If you look closely at this section of the image, not only can you see open ocean, but breaking waves are also visible at the ice edge. (It works very well if you have a touch screen you can use to zoom in on this section of image).

Once you locate the ice edge, follow it with your eyes. At this point, we can notice breaking waves from horizon to horizon within the frame of the picture. These features, though subtle, are plainly present.

Given this opening of water near Camera 1, one wonders how much longer this camera will keep sending pictures to us.

At North Pole Camera 2, a crack in the ice has now also developed.

You can see this crack in the image below:

NorthPoleCracksCam2

(Image source: APL)

If you look to the left-hand side of this image, you can see a thin, black crack appearing in the distance.

APL has managed cameras near the north pole for years. This is the first time we’ve been able to see cracks and sections of open water from cameras located so close the central sea ice. These images are being taken in early June. A clear sign that the central ice is far more fragile than usual for this time of year, much less any time during summer whatsoever.

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Cracks in Sea Ice Visible At North Pole Camera 1

CracksNorthPoleCAM1

(Image source: APL)

Small leads (cracks) in the sea ice became visible at the North Pole Observatory’s Camera 1 today.

This camera is part of a North Pole environmental observatory supported by a National Science Foundation Grant and managed by the Applied Physics Lab at the University of Washington. Camera 1 is one  of two cameras placed on ice at or near the North Pole to visually observe conditions there.

The cracks began to appear at around 20:15 this evening when two areas of ice — one to the left of the camera and one to the right — began to break up.

Ice near the North Pole is generally very stable. But melt over the past few years has begun to threaten melt in this region. Over the past two weeks, a persistent storm has churned up the ocean, breaking large sections of fragile ice. Unless conditions remain colder than average for much of the summer this year, large sections of ice, previously protected from melt, are at risk of loss during this summer.

Some scientists, noting rapid trends in sea ice area and volume loss, have recently warned that Arctic sea ice could completely melt by end of summer as early as 2015 and possibly before 2020. An indication that this end stage melt was beginning would be cracking and break-up of ice in the area of the North Pole and in other protected regions close to Greenland and the Canadian Arctic Archipelago.

Summer 2013 is not expected to see all or most sea ice lost by end of summer. However, an extraordinarily strong melt year with losses akin to 2007 or 2010 (volume) would be enough to render the Arctic mostly ice free.

Links:

North Pole Observatory

Persistent Arctic Storm

Sea Ice Cracks Expand to Cover 2/3rd of Thick Ice, Cross North Pole

North Pole Cracks

(Image Source: Canadian Weather Office)

A large, rapidly expanding, series of ring-structure cracks in the Arctic sea ice that began in the Beaufort Sea in February has now expanded to encompass much of the remaining thick ice and to cross the North Pole.

In the upper-center portion of the above image, you can see these crack structures pushing through the remaining thick ice and arcing up through the North Pole itself. These North Pole  vicinity cracks first appeared a couple of days ago. Since that time, they have rapidly expanded to cover much of the remaining thick ice.

These longitudinal cracks have now also become visible on the US Navy sea ice thickness composite here:

arcticictn_nowcast_anim30dmar18

(Image source: US Navy)

Note how, in the last few frames, the thick sea ice begins to crack as it lifts northward off Greenland and the Arctic Archipelago. As the latitudinal cracks break the ice, you can begin to see hair-line longitudinal cracks emerge.

So we have an ever-expanding and ongoing crack-up of a large portion of Arctic sea ice. This increased cracking will, likely, make the ice sheet in cracked regions far less resilient to melt once more direct sunlight begins to rain down starting in May and June.

Other areas worth continued observation include two expanding areas of thin ice north of Alaska and Western Canada.

A good number of amateur and professional eyes are currently keeping tabs on the crack-up, so we will continue to post updates as they become available.

Links:

http://neven1.typepad.com/blog/

ASCAT Satellite Images Show 2013 Arctic Sea Ice Break-up, Speed of Motion Unprecedented

Ascat2010

Ascat2011

Ascat2012

ATeamscat2013

The above series of images is a composite of ASCAT radar sequences for 2010 to 2013. They were produced by anonymous Arctic Ice Blog comment poster A-Team. A-Team has recently gotten the attention of Climate Central and Discover News, among others, for his/her vivid images tracking an unprecedented sea ice break up starting in February of 2013.

This, most recent, series of images composed by A-Team compares this season’s Arctic sea ice with that of 2010 through 2012. These radar images both show cracks and the motion of sea ice. As can plainly be seen, sea ice motion and cracking is far greater for 2013.

Unprecedented cracking and rapid motion of late winter sea ice is yet one more sign of sea ice fragility. Though it is no guarantee that sea ice melt at end of summer 2013 will produce a new record low, as happened in 2012, it does appear to be yet one more factor emerging from an ongoing period of catastrophic melt that began in the 1950s and has accelerated since 1979. It is worth noting that, if the current rate of sea ice volume losses holds, there is risk of a complete Arctic melt as soon as 2013-2017.

Another series of images, these identified by Chris Reynolds from the archive at the Canadian Weather Office, vividly shows the progression of breakage in the Beaufort Sea which has continued to intensify over the past few days. You can view this image sequence here:

https://docs.google.com/file/d/0B3pB-kdzoLU3NEFwVDJzZVNxQ1k/edit?pli=1

And last of all, a very large crack has appeared directly through the thickest ice. This one ending very close to the North Pole:

newCrackMar17_zpsb984a4c3

Learn more on Neven’s Arctic Ice Blog.

Arctic Crack-up Expands: Large Crack Lifts Thick Sea Ice off Anchor North of Greenland, Arctic Archipelago

LargecrackNavy

(Image source: US Navy)

Ever since early February, a growing section of the Beaufort sea ice has been breaking into a large system of expanding cracks. Now, it appears that a very large crack has run down the back of the Arctic Archipelago and the north shore of Greenland, lifting much of the remaining thick sea ice off its anchor there.

You can view this event by watching the last few frames of the US Navy sea ice animation above. These animations have a rather low resolution. So the fact that this large crack has become visible in this image is a testament to its possible size.

Clouds appear to have obscured much of this region in the satellite picture. So we don’t yet have direct observations of this cracking event. Such a direct observation would provide confirmation that the crack is as large as it appears in the US Navy composite.

Ever since Neven and Chris Reynolds and a commenter to Neven’s Arctic Ice blog monickered A-team began posting observations of the Beaufort sea ice crack-up, major news sources began picking up on the story. Climate Central and now Discover News have issued their own reports. Even NSIDC has given Neven’s Arctic Ice Blog a reference. NSIDC’s own take on the event is that the current crack-up is ‘exceptional.’

We’ll have to see if the US Navy data bears out in the satellite picture. However, it appears that the current crack-up which may pose serious risks to Arctic sea ice come late spring and summer, continues apace. Much of the Beaufort sea is riddled with very large cracks and broken sections of ice. Crack systems appear to have spread further north and east, creating the overall impression of an ongoing break-up.

Links:

Dosbat

Neven’s Arctic Ice Blog

US Navy’s Arctic Sea Ice Monitor

 

 

Cracks Grow to Cover Large Sections of Arctic Sea Ice as Melt Season Nears

Arctic Cracks

(Satellite image provided by the Canadian Weather Office)

A series of large cracks that erupted into existence in February have now expanded to cover massive sections of Arctic sea ice.

Back in February, a series of large cracks shattered a section of sea ice just north of Canada and Alaska. Since that time, the cracks have been growing and multiplying. Now, nearly all of the Beaufort sea ice is mangled with giant cracks and openings exposing sections of water covered only by a thin film of ice.

You can clearly see a large section of these cracks and openings on the above satellite image just north of Alaska and northwest of Canada.

These cracks now appear to have expanded all the way across the Arctic Ocean to Russia and are fingering eastward toward the Laptev Sea. At this rate, much of the Arctic sea ice will be cracked, broken, and riddled with holes come the start of the melt season sometime within the next few weeks.

This particular event is rare, but not unique. Large cracking events have occurred during late winter and early spring over the past decade. But, according to reports from the National Snow and Ice Data Center (NSIDC), this particular event is the most extensive yet. Considering that NSIDC issued its report a few days ago and that ice has continued its break-up, the current extent of these cracks is even more considerable.

Such a large extent of fractured ice is not a good sign for the upcoming melt season. The ice between the cracks is very thin and, therefore, more likely to rapidly melt. The fractured ice itself has greater surface area and is more at the mercy of the elements — sunlight amplified by global warming and a continuously warming ocean.

Links:

Total Meltdown Warning: High Risk Summer Sea Ice Could Completely Collapse by 2013-2017

http://nsidc.org/arcticseaicenews/2013/03/

http://www.climatecentral.org/news/large-fractures-spotted-in-arctic-sea-ice-15728

http://neven1.typepad.com/blog/2013/03/the-cracks-of-dawn.html

http://dosbat.blogspot.com/2013/03/the-beaufort-break-up-of-february-2013.html

 

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