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Messages - Cate

Pages: [1] 2 3 4
1
Arctic sea ice / Re: Arctic Image of the Day
« on: April 22, 2017, 01:49:50 AM »
A friend found this useful iceberg locator:
http://icebergfinder.com/


Hi Susan, that site, which is run by the tourism dept of the provincial government, relies on reports by "ambassadors" and thus gives only a partial picture of the berg situation on our coast.

A more complete picture is compiled daily by the Canadian Ice Service. Click "East Coast", then scroll down to "Daily Iceberg Analysis Chart." The graphic gives the numbers of bergs in each section of the map.

http://www.ec.gc.ca/glaces-ice/default.asp?lang=En&n=D32C361E-1&grp=Guest&mn=&lang=en

If you are on FB, check out "Newfoundland Iceberg Reports", a group which is very current and features photos and local information, also lots of locals posting who are happy to help visitors locate icebergs. 

:)

2
Greenland and Arctic Circle / Re: What's new in Greenland?
« on: April 21, 2017, 04:59:39 PM »
NASA OMG blog by science communicator Laura Faye Tenebaum on Greenland: "A vast melting desert."

".....Over my headset, I can hear the pilots discussing the flight path with the instrument engineers. Out the window, I can see Greenland’s northernmost glaciers below us; white upon white upon white. They sure appear stable, still, enduring. But they’re not. They’re melting..."

https://climate.nasa.gov/blog/2578/a-vast-melting-desert/

Good read.


3
Consequences / Re: Effects on Arctic Wildlife
« on: April 21, 2017, 02:27:38 PM »
http://www.cbc.ca/news/canada/newfoundland-labrador/davis-strait-polar-bears-ice-decline-1.4077164

Sea ice changes affecting polar bear populations in Davis Strait.

Polar bear scientist at the U of Alberta, who has been studying bears for 35 years, says the ice-free period off Labrador is increasing by 18 days per decade, because of  ice melting earlier and forming later in the fall. This affects bear access to seals, their preferred food.

As well, "One of the big findings was the reproductive rates were down. And that means that over the longer term the population is certainly not growing, and may be declining."


4
Permafrost / Re: This is not good (methane clathrates)
« on: April 20, 2017, 12:24:55 AM »
A Newf would say, "Woof woof."

A Newf is a dog.

I am a Newfoundlander. :)

5
Arctic sea ice / Re: Arctic Image of the Day
« on: April 20, 2017, 12:22:47 AM »
This is Derrick Bath's vessel, Polar Adventure, battling sea ice at Twillingate, a couple hundred km north of that spectacular berg in Ferryland. Sea ice is a  a major problem for Newfoundland fishermen, coming as it does during lobster and crab season.
 
http://www.cbc.ca/news/canada/newfoundland-labrador/ice-compensation-fisherman-twillingate-1.4076069



6
Arctic sea ice / Re: Arctic Image of the Day
« on: April 19, 2017, 09:01:02 PM »
This is not far from me. Beautiful, yes, but they keep the water and the air so cold and can ruin the summer. Ice also can play havoc with fishing gear. Tourists love it because they don't have to live here. Those of us who have grown up with ice are praying for a solid month of sou-westerlies to take the bergs and the pack well out to sea, and good riddance! :)

FYI

Latitude of Ferryland is 47° 2' N.

So, more southerly than Paris, France.

7
Greenland and Arctic Circle / Re: The Nares Strait thread
« on: April 15, 2017, 12:34:11 AM »
That big chunk that broke off between April 11 and 12 has now made its way into the strait. Would someone reckon the distance and speed, please?  :)

8
Hunter, thanks for the amazing photos and the link re the Kee Bird---very informative. :)

9
Arctic sea ice / Re: Arctic Image of the Day
« on: April 15, 2017, 12:19:14 AM »
"Petermann glacier's east wall near the terminus of the floating ice shelf, with blowing snow visible coming from the plateau to the east."
Photo NASA/John Sonntag. Posted today by NASA Operation Icebridge.


10
Greenland and Arctic Circle / Re: The Nares Strait thread
« on: April 13, 2017, 12:39:18 PM »
Big chunk out of the Lincoln Sea "boot" arch on April 12.

http://www.arctic.io/explorer/4Xa5A/2017-04-12/9-N82.26727-W60.25128

11
Arctic sea ice / Re: Operation IceBridge - Arctic Spring 2017
« on: April 13, 2017, 12:37:54 PM »
Oren, I've been looking for that too.

And a big chunk has just broken loose (April 12).

http://www.arctic.io/explorer/4Xa5A/2017-04-12/9-N82.26727-W60.25128

12
Arctic sea ice / Re: Operation IceBridge - Arctic Spring 2017
« on: April 12, 2017, 02:47:13 PM »
Yesterday: "This morning IceBridge is preparing for the CryoVex-2 sea ice survey, the last mission of the campaign that will coordinate with other partners. Today's flight underflies a pass by the CryoSat-2 satellite, and conditions permitting, this afternoon a CryoVex team based out of Alert will hopefully deploy by Twin Otter and survey in situ the southernmost sites on the CryoSat-2 line. Prior to the beginning of surveying the CryoSat-2 line from its northern end, we will transit over Ellesmere Island and survey three quarters of the northernmost transect of North Canada Basin, a high-priority sea ice flight."



13
Arctic sea ice / Re: Operation IceBridge - Arctic Spring 2017
« on: April 12, 2017, 02:43:05 PM »
They're posting amazing photos almost daily on FB and probably on Twitter and Snapchat, too, for all I know.  Today they're flying "Northwest Coastal C."


14
Arctic sea ice / Re: The 2017 melting season
« on: April 07, 2017, 02:59:43 PM »
Re. Newfoundland...

....The bays will be a different matter, and much slower to clear, likely.

All we need are a few days of sustained SW winds, and the northern bays will clear out pretty nicely. But the extent of the pack in general has taken a beating from the two recent storms, compared to say, extent in the last week of March. The Canadian Ice Service today is showing much less pack to the east, but bergy water right around to the Burin Peninsula and well down through the Strait of Belle Isle.

15
crandles, thank you for the explanation about flushing. I too had been wondering about that sudden outflow.

Btw, that general Disko area seems to have a lot more ice around in all the channels and bays than last year at this time, when it was all open water up there along the Greenland side of Baffin Bay.

16
Arctic sea ice / Re: The 2017 melting season
« on: April 06, 2017, 11:52:49 AM »
Not sure where this fits, but 450 icebergs suddenly appearing around the Grand Banks makes melting season real.

https://www.boston.com/news/national-news/2017/04/05/unusually-large-swarm-of-icebergs-drifts-into-shipping-lanes

Yes, there was a huge icefield NE and E of Newfoundland, extending out from the coast many hundreds of km, until about last Thursday (Mar 30). That's when the first of two massive back-to-back nor-easters tore into the pack with its accompanying bergs and scattered it far and wide across NW Atlantic shipping lanes.

Check out the Canadian Ice Service charts for recent analysis of NE Atlantic coastal/eastern Canadian Arctic ice.

https://www.theguardian.com/environment/2017/apr/06/huge-fleet-icebergs-north-atlantic-shipping-lanes

17
Arctic sea ice / Re: Arctic Image of the Day
« on: April 05, 2017, 01:39:46 PM »
Another one from NASA Operation Icebridge.

"Clouds (near the center of the photo) over the sea ice in Nares Strait as seen from a window of NASA’s P3." Posted on their FB page April 4.




18
Arctic sea ice / Re: Arctic Image of the Day
« on: April 04, 2017, 03:00:46 PM »
Beauty shot: muskoxen, north of Zachariae glacier, Greenland on April 3.
Photo by NASA Operation Icebridge/Jeremy Harbeck.
Lots more on their FB page.


20
Arctic sea ice / Re: The 2017 melting season
« on: March 31, 2017, 03:35:52 PM »
Driven by that huge nor-easter, pack ice is moving into the harbour of St John's, Newfoundland today. This is very rare---I remember it happening in 1974, and maybe again in the 1980s.

https://twitter.com/PaulKinsman/status/847800660171120642

21
Arctic sea ice / Re: The 2017 melting season
« on: March 30, 2017, 11:41:49 PM »
Big low ripping up the ice at the moment. The Northwest Atlantic iceberg field is moving down into Titanic territory. Sea ice now extends hundreds of km east of Newfoundland, putting offshore oil-drilling operations into caution mode.

22
Arctic sea ice / Re: Arctic Image of the Day
« on: March 30, 2017, 09:02:17 PM »
UPDATE on that Newfoundland bear, with a photo that will probably go viral:

http://www.cbc.ca/news/canada/newfoundland-labrador/praying-polar-bear-picture-wesleyville-1.4047414

23
Greenland and Arctic Circle / Re: The Nares Strait thread
« on: March 30, 2017, 06:39:31 PM »
Today (March 29) on Explorer, you can click back to 2014 in clear weather. Compared to previous years, the ice is almost all rubble, and any smooth ice is riven with cracks. There is no sign yet of the development of a strong arch in the strait, like 2014-2016, apart from the jackboot in the Lincoln.

24
Arctic sea ice / Re: What's new in the Arctic ?
« on: March 30, 2017, 06:24:10 PM »
Not sure where to put this, parking it here----"increased sea ice and iceberg activity since last weekend" is threatening oil drilling operations off the east coast of Newfoundland. Precautionary measures are being taken to prevent damage to production and storage facilities.

This is not unusual. Ice is an expected seasonal hazard for oil production in this area.

http://www.cbc.ca/news/canada/newfoundland-labrador/searose-iceberg-1.4047254

25
Arctic sea ice / Re: Arctic Image of the Day
« on: March 30, 2017, 01:51:28 PM »
It's spring on the NE coast of Newfoundland, which means the polar bears that follow the whelping herds of harp and hood seals out on the pack ice are on the move. Some come ashore and often wander around remote communities, at great peril to local residents----and, sometimes, sadly, to themselves. This one was spotted in Wesleyville  (latitude N49.15) on March 29, which is near the southernmost limit of their range. The RCMP and wildlife officials have issued warnings and are monitoring.

PHOTO by local resident Dana Blackmore.


26
Policy and solutions / Re: Geoengineering, another rush for money?
« on: March 28, 2017, 02:20:48 AM »
https://www.theguardian.com/environment/true-north/2017/mar/27/trump-presidency-opens-door-to-planet-hacking-geoengineer-experiments

"Under the Trump administration, enthusiasm appears to be growing for the controversial technology of solar geo-engineering, which aims to spray sulphate particles into the atmosphere to reflect the sun’s radiation back to space and decrease the temperature of Earth.......
David Schnare, an architect of Trump’s Environmental Protection Agency transition, has lobbied the US government and testified to Senate in favour of federal support for geoengineering.
He has called for a multi-phase plan to fund research and conduct real-world testing within 18 months, deploy massive stratospheric spraying three years after, and continue spraying for a century, a duration geoengineers believe would be necessary to dial back the planet’s temperature......"

27
Greenland and Arctic Circle / Re: The Nares Strait thread
« on: March 24, 2017, 10:39:39 PM »
Cool image, oren. Thanks so much.

Here is an interesting piece on wind and currents in Nares, by a student of Andreas Muenchow.

https://icyseas.org/2012/07/27/currents_winds_nares_strait_ice_arches/

28
Arctic sea ice / Re: The 2017 melting season
« on: March 24, 2017, 10:34:22 PM »
Surface ice in Nares is moving through. I don't know how to animate---toggle the past couple of clear days to watch it. I'm sure someone here can work out the speed. ;)

Notice that the heel, toe, and sole of the bigfoot boot "arch" at the Lincoln Sea end have frozen over again, for the time being.

http://www.arctic.io/explorer/4Xa5A/2017-03-23/7-N79.9726-W66.63132


Is it normal for that much of the Northwest passage to have such thin ice? With that large crack, it almost looks as if it is open for business.


I was told that Nares usually opens in July. If you compare this same period from previous years, you can see how different the whole strait looks this year. The famous arch is key---will it hold or not? And will other arches be able to form with the ice in that state?

29
Greenland and Arctic Circle / Re: The Nares Strait thread
« on: March 24, 2017, 01:48:24 PM »
http://www.arctic.io/explorer/4Xa5A/2017-03-23/7-N79.9726-W66.63132

oren, refreeze has happened, as you indicated---the heel, toe, and sole of the bigfoot boot in the Lincoln Sea appear to have frozen over again, for now. That arch seems to be key to keeping the older sea ice in place since there's not much fast ice farther down the strait for arch-formation. It's all on the move---the ice all down the strait appears to be cracking and moving. I assume this is current-driven?

30
Arctic sea ice / Re: The 2017 melting season
« on: March 24, 2017, 01:39:48 PM »
Surface ice in Nares is moving through. I don't know how to animate---toggle the past couple of clear days to watch it. I'm sure someone here can work out the speed. ;)

Notice that the heel, toe, and sole of the bigfoot boot "arch" at the Lincoln Sea end have frozen over again, for the time being.

http://www.arctic.io/explorer/4Xa5A/2017-03-23/7-N79.9726-W66.63132

31
Greenland and Arctic Circle / Re: Greenland ice sheet retreat
« on: March 23, 2017, 08:29:32 PM »
Canadian Ice Service, Ice Glossary:

Drift/pack ice 
Term used in a wide sense to include any area of ice, other than fast ice, no matter what form it takes or how it is disposed. When concentrations are high, i.e., 7/10 or more, the term pack ice is normally used. When concentrations are 6/10 or less the term drift ice is normally used.

Ice field
Area of floating ice, consisting of any size of floes and greater than 10 km across.


Lots more here:
https://www.ec.gc.ca/glaces-ice/default.asp?lang=En&n=501D72C1-1

32
Glaciers / Re: Barnes Ice Cap / Penney Ice Cap
« on: March 22, 2017, 03:23:30 PM »
http://www.eenews.net/stories/1060051765

Report on a study on the Barnes icecap by Gifford Miller at UColorado Boulder. Photos.


Quoting from article:

"Global warming is causing significant melting throughout the region and will claim the last remnants of a massive ice sheet that once covered all of North America and that remained stable for 2,000 years, according to findings published yesterday in Geophysical Research Letters, a journal of the American Geophysical Union. The Barnes Ice Cap, which is about the size of Delaware and is located on Baffin Island in the Canadian Arctic, is likely to disappear even if humanity curtails its combustion of fossil fuels at levels not currently expected, even under the most conservative estimations.

"And while the ice cap's disappearance may only cause sea levels to rise a few millimeters, its loss symbolizes a more dire threat of warming to the region, said Gifford Miller, a glacial geologist at the University of Colorado, Boulder, and co-author of the study. It shows large portions of the Greenland ice sheet are also at risk of disappearing, which would raise sea levels across the globe."

Thanks to ColoradoBob for the link.

33
Greenland and Arctic Circle / Re: The Nares Strait thread
« on: March 21, 2017, 01:35:20 PM »
oren, yes, that giant jackboot is still holding in the Lincoln Sea. As for the strait freezing and thawing, agreed, to be expected this time of year, and I think evident in the image today as well, a thin ice skim between thicker floes. We are now at 12 hours daylight and increasing daily, so if Nares loses ice cover/albedo, I suppose that might make a tiny difference in the surface temp, which could knock on in ice-melt farther north in the passage?

Thanks for the image sources, will have a look.

34
Greenland and Arctic Circle / Re: The Nares Strait thread
« on: March 21, 2017, 12:53:12 PM »
Some cloud cover on this 20 Mar 2017 image but it looks like there is even more open water in the Petermann outlet area than a couple of days ago.

This is only my second melt year and I don't use anything but Explorer, so maybe the other image sources and more experienced eyes have better info, please? but it looks to me like Nares ice is on the move. If so---well, it's a bit early, isn't it?

The link shows the entire strait. Zoom in for detail.

http://www.arctic.io/explorer/4Xa5A/2017-03-20/8-N80.53307-W68.45532

35
Arctic sea ice / Re: The 2017 melting season
« on: March 21, 2017, 12:36:36 AM »
New post today from Robertscribbler: "Frailest Ever Winter Sea Ice Facing a Cruel, Cruel Summer."

https://robertscribbler.com/2017/03/20/frailest-ever-winter-sea-ice-facing-a-cruel-cruel-summer/

36
Greenland and Arctic Circle / Re: The Nares Strait thread
« on: March 20, 2017, 07:30:33 PM »
The whole strait looks loosened up to me, like it's getting ready to move. Heading south through the strait from our giant foot----to the area just above the "knee", roughly at the mouth of Petermann, there is open water.

As usual, toggle the years to compare.

http://www.arctic.io/explorer/4Xa5A/2017-03-18/8-N81.71718-W64.88272

37
Permafrost / Re: Shelf Temperature Profiles
« on: March 19, 2017, 07:57:55 PM »
LOL Terry I'm too old to lose any sleep over this stuff. :)

Apparently there are submarine pingos all over the Beaufort as well. Incidentally, I found this on an old forum discussion about an ice-free Arctic:

"In 1980 the CCGS John A MacDonald struck the top of an uncharted undersea mound off of Eureka. The heavy icebreaker was creased and holed." Possibly a pingo? I suppose they wouldn't pose much of a hazard to shipping with modern navigational equipment. Unless one went kaboom just as the ship was passing over it.  ;)

For interest, here is a short paper on tsunamis in Atlantic Canada. 
https://maritimemuseum.novascotia.ca/research/atlantic-tsunamis


38
Thanks, Jim. It's back online now.

39
I'm getting 404 Not Found for the DMI website today. 'Sup? Maintenance, perhaps?

40
Arctic Background / Climate change in Nunavut
« on: March 18, 2017, 11:04:43 PM »
Website from the Climate Change Centre of the Government of Nunavut, offering an overview of climate change in the Canadian Arctic. Great resource from the front lines.

"The Nunavut Climate Change Centre helps Nunavummiut learn about Arctic climate change, and how they can engage and adapt. Here is an overview of climate change in the Canadian Arctic, and opportunities to get involved and explore the latest research and information on traditional and local knowledge of climate change."

http://climatechangenunavut.ca/en

Thanks to Andy in SD over at Robertscribbler for the link.

41
Arctic sea ice / Re: Arctic Image of the Day
« on: March 18, 2017, 01:22:17 PM »
The "eye of Quebec."

42
Arctic sea ice / Re: Arctic Image of the Day
« on: March 14, 2017, 11:41:55 PM »
He looks a bit sad......

"Frosty the Snowman knew the sun was hot that day
So he said let's run and we'll have some fun now
Before I melt away......" 

:(

43
Greenland and Arctic Circle / Re: The Nares Strait thread
« on: March 12, 2017, 10:15:14 PM »
It doesn't look very much like an arc(h) anymore.

http://www.arctic.io/explorer/4Xa5A/2017-03-11/9-N82.28114-W62.21348

44
Arctic sea ice / Re: Northern Sea Route thread
« on: March 12, 2017, 02:45:55 PM »
Such a powerful image, Jim.

Russia is owning the Arctic.

45
Consequences / Re: Ocean Temps
« on: March 11, 2017, 12:30:51 PM »

46
Eye-balling the Disko area today---in 2016 there was open water all around the island in early March, whereas it still looks pretty ice-bound through the NW channel today. There is a lot more ice sitting in the surrounding waters than last year as well, but it's all rubble-acious. Wind and current play a big role in where the ice sits on any particular day. Toggle years to compare back to 2014.

http://www.arctic.io/explorer/4Xa5A/2017-03-08/8-N69.90254-W52.29753

47
Arctic sea ice / Re: Arctic Image of the Day
« on: March 09, 2017, 10:02:56 PM »
Spotted on the pack ice north of Twillingate, Newfoundland, yesterday. A big bear, in good condition. Wonderful sight.

Polar bears are not unusual on the NE coast of Newfoundland this time of year. This chap would be following the seal herds, which are whelping on the pack ice. Sometimes they do come ashore and are stranded if the ice moves off. Very young or old bears are the most dangerous, as they are often hungry. Wildlife officials will transport stranded bears back out to the ice edge, if possible.




48
The rest / Re: Arctic Café
« on: March 08, 2017, 12:21:49 AM »
Couldn't resist after reading above about the topology of a glove.

The sleeping bag, a poem.

On the outside grows the furside; on the inside grows the skinside.
So the furside is the outside, and the skinside is the inside.
One side likes the skinside inside, and the furside on the outside.
Others like the skinside outside, and the furside on the inside.
If you turn the skinside outside, thinking you will side with that side,
then the soft side, furside's inside, which, some argue, is the wrong side.
If you turn the furside outside, as, you say, it grows on that side,
then your outside's next the skinside, which for comfort's not the right side.
For the skinside is the cold side, and your outside's not your warm side.
And two cold sides side by side are not right-side when side to side!
If you decide to side with that side, turn the topside furside inside.
Then the cold side furside skinside's, beyond all question, inside out!

Herbert George Ponting, photographer on Scott's last expedition.

I'm off now to warp a space ship into a Klein bottle.


*giggling*....and....cue "The Modern Hiawatha" by George A Strong:

 "He killed the noble Mudjokivis.
 Of the skin he made him mittens,
 Made them with the fur side inside,
 Made them with the skin side outside.
 He, to get the warm side inside,
 Put the inside skin side outside.
 He, to get the cold side outside,
 Put the warm side fur side inside.
 That's why he put the fur side inside,
 Why he put the skin side outside,
 Why he turned them inside outside."

http://wonderingminstrels.blogspot.ca/2000/09/modern-hiawatha-george-strong.html

 ;D


49
The rest / Re: Arctic Café
« on: March 07, 2017, 11:01:47 PM »
Ice-related story: dramatic rescue of the crew of a sealing vessel out of Summerford,  Newfoundland, which ran into trouble in high winds and heavy ice-infested seas NE of St John's on Sunday. This was a first-time real-life rescue for the crew of the chopper, which was ably flown by one Captain Nicole Lively. :D

Check out the video in the story.

http://www.cbc.ca/news/canada/newfoundland-labrador/summerford-skipper-safe-at-home-after-rescue-at-sea-1.4011611

This is the time of year when Newfoundlanders have traditionally taken to the ice around our shores to harvest seals---harp seals, which whelp on the pack ice that drifts down from the Arctic on the Labrador Current. The hunt is not what it used to be, in the wake of animal rights campaigning, and nowadays no whitecoats are taken, but sealing is still an important economic contributor to many Newfoundland households. The entire animal in used, the carcase and hide, in traditional Newfoundland culture.

And yes. I miss A-Team too.

50
Arctic sea ice / Re: The 2016/2017 freezing season
« on: March 06, 2017, 11:48:02 AM »
Canadian Ice Service monthly "departure from normal concentration" charts show mostly normal concentration across the Canadian Arctic on 27 Feb 2017, with a few exceptions. For example, the great outflow of ice that comes down the Labrador Current from the west coast of Greenland along the Labrador coast is showing various degrees of lower than normal concentration along the entire periphery, as well as throughout waters NE of Newfoundland and in the Gulf of St Lawrence. The charts are here:

 http://www.ec.gc.ca/glaces-ice/default.asp?lang=En&n=B6C654BB-1#departure

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