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Thanks Rob. You are correct about the area of the Hudson Bay, I had glanced at Wikipedia and the 4 million km^2 number was for the Bay and the surrounding area.
Arctic Basin SIA dips below 2 million km2
The record for the most important region on the Cryosphere Today regional sea ice graphs page was broken 2 weeks ago. But it didn't stop there. In fact, it hasn't stopped yet. It seems the plateau since 2007 was short-lived:
The CAB and the Hudson Bay are roughly the same area at 4 km^2. I am trying to come to grip with map distortions and throwing that tidbit out there for you all. It may look like there is relatively half the ice left in the Arctic but that is far from the truth.
Arctic Basin SIA dips below 2 million km2
The record for the most important region on the Cryosphere Today regional sea ice graphs page was broken 2 weeks ago. But it didn't stop there. In fact, it hasn't stopped yet. It seems the plateau since 2007 was short-lived:
Thanks, crandles. Circle, duh!
Using the first equation, the sq km above 80N is ~3.9 M km^2. So 3.9 - 1 = 2.9 b/w 80N-85N. Divide that by 24 and that is how many sq km each 80-85N cell in the Bremen concentration graph represents (0.12 M km^2). That helps me a lot to translate these maps in actual numbers.
Arctic storm part 3: detachment
Yes, ladies and gentlemen, the Arctic summer storm is still there. After approximately 48 hours (which is long for an Arctic summer storm) it has weakened some compared to yesterday or the day before, but as far as I can see sea level pressure in the centre of the storm is still around 970 mb, w...
Yes, but I was only using the measurement for reference of size. I found an online calculator that gives me the distance b/w two sets of lat/long coordinates. It gives me the distance b/w 85N-0E and 90N-0E is 568km. Next, the distance b/w 87.5N-0E and 87.5N-90E is 393km (1/4th, had to use that since the calculator would take me through the NP). So 588 * 393 * 4 = ~875,000 KM^2 above 85N. Okay?
Arctic storm part 3: detachment
Yes, ladies and gentlemen, the Arctic summer storm is still there. After approximately 48 hours (which is long for an Arctic summer storm) it has weakened some compared to yesterday or the day before, but as far as I can see sea level pressure in the centre of the storm is still around 970 mb, w...
Sorry, 80N.
Arctic storm part 3: detachment
Yes, ladies and gentlemen, the Arctic summer storm is still there. After approximately 48 hours (which is long for an Arctic summer storm) it has weakened some compared to yesterday or the day before, but as far as I can see sea level pressure in the centre of the storm is still around 970 mb, w...
How many sq km are above 90N? Just trying to figure out if DMI drop is possible. TIA
Arctic storm part 3: detachment
Yes, ladies and gentlemen, the Arctic summer storm is still there. After approximately 48 hours (which is long for an Arctic summer storm) it has weakened some compared to yesterday or the day before, but as far as I can see sea level pressure in the centre of the storm is still around 970 mb, w...
Is that the first time Dr. Masters linked to this site, Neven? Good to see you recognized, I think this is one of the most interesting sites on the internet.
The wet side of Greenland
When writing The dark side of Greenland, a recent blog post on decreasing reflectivity of the Greenland ice sheet, with images comparing the southwest of Greenland with satellite images from previous years, I of course realized that when that ice sheet becomes less reflective, it will soak up mo...
Here is the link to daily AOs > ftp://ftp.cpc.ncep.noaa.gov/cwlinks/norm.daily.ao.index.b500101.current.ascii
December 2011 Open Thread
We sleepily await the newest updates from NSIDC and PIOMAS. In the meantime over at the SciencePoles website from the International Polar Foundation there's a very interesting interview with professor Martin Jakobsson: Investigating Arctic Paleoclimates.
Daily AOs since 1950. Last time exceeded 5 was 1993. Looking at local weather, I don't see any significant effects from a strongly positive AO. I wouldn't expect any big snowfalls right now but that is about it. Maybe somebody can find an actual paper.
December 2011 Open Thread
We sleepily await the newest updates from NSIDC and PIOMAS. In the meantime over at the SciencePoles website from the International Polar Foundation there's a very interesting interview with professor Martin Jakobsson: Investigating Arctic Paleoclimates.
I came across this adventurer's website the other day. He is trying to solo sail the NW passage.
http://www.solotheamericas.org/
Across the North Pole
Last year we had two Norwegians (successfully) trying to sail both the Northern Sea Route and the Northwestern Passage in one single season. This year we have two Frenchmen who are taking things a step further. According to the Fairbanks Daily: Two French adventurers are about to embark on a jo...
That ice crack is interesting. By using the that marker, I can see the movement b/w the two ice whatchamacallit (drifts/floes/fields) switched from yesterday. The internal temp of web cam #2 increased 5.5 degrees Celsius in 8 minutes today (if that is accurate, it makes the weather in my hometown seem tame) -->
http://www.arctic.noaa.gov/npole/2010/images/noaa2-2010-0719-070908.jpg
http://www.arctic.noaa.gov/npole/2010/images/noaa2-2010-0719-071708.jpg
Sea ice extent update 17: crescendino
I'm regularly writing updates on the current sea ice extent (SIE) as reported by IJIS (a joint effort of the International Arctic Research Center and the Japan Aerospace Exploration Agency) and compare it to the sea ice extents in the period 2006-2009. The IJIS graph is favoured by almost everyo...
Can anyone tell me if the black dots on this map are melt ponds?
Steve,
Looks like they are small open areas -- http://rapidfire.sci.gsfc.nasa.gov/subsets/?subset=Arctic_r04c04.2010189.terra.250m. Seems like anything black is either open sea or so thin that it is virtually melted within the contiguous ice extent. Nice graph.
Neven,
Thanks for upgrading the temperature map.
[fixed the link - N.]
Sea ice extent update 13: closing in
I'm regularly writing updates on the current sea ice extent (SIE) as reported by IJIS (a joint effort of the International Arctic Research Center and the Japan Aerospace Exploration Agency) and compare it to the sea ice extents in the period 2006-2009. The IJIS graph is favoured by almost everyo...
SST arctic anomalies. Select anomaly and loop thru the last few weeks. +5C anomalies show up and grow (like 2007 from what I have read).
http://ocean.dmi.dk/arctic/satellite/index.uk.php
Sea ice extent update 12: taking it slow
I'll be regularly writing updates on the current sea ice extent (SIE) as reported by IJIS (a joint effort of the International Arctic Research Center and the Japan Aerospace Exploration Agency) and compare it to the sea ice extents in the period 2006-2009. The JAXA graph is favoured by almost ev...
Looking through older ice flow charts you can see the direction of the ice in the Beaufort Sea does change direction periodically. It appears that the changing direction of the current has stopped the ice flow over the last day or so. It will be interesting to see if the flow rate increases going the opposite direction and how much ice is pushed out of the two straits.
http://iabp.apl.washington.edu/Summary/8309.gif
Sea ice extent update 10: leg broken?
I'll be regularly writing updates on the current sea ice extent (SIE) as reported by IJIS (a joint effort of the International Arctic Research Center and the Japan Aerospace Exploration Agency) and compare it to the sea ice extents in the period 2006-2009. The JAXA graph is favoured by almost ev...
Blinking thru the images of the flow of ice in the Nares Strait and looking back at 2009, I wonder if one was to measure the flow of ice in km/day and took the highest flow rates and matched to century breaks there would be a high correlation.
2009 July 5th ice arch final days:
http://rapidfire.sci.gsfc.nasa.gov/subsets/?subset=Arctic_r03c03.2009186.terra.1km
Sea ice extent update 9: break a leg
I'll be regularly writing updates on the current sea ice extent (SIE) as reported by IJIS (a joint effort of the International Arctic Research Center and the Japan Aerospace Exploration Agency) and compare it to the sea ice extents in the period 2006-2009. The JAXA graph is favoured by almost ev...
The Cryosphere Today concentrations predicted this break-up nicely the last week. It looks like they have about 60-80% ice in the area right now so we should expect it to break up pretty quickly now.
Animation 4: McClure Strait
Another very valuable comment in today's 2010 vs 2007 Uni Bremen Comparison blog post pointed me to a considerable partial disintegration of the ice bridge in McClure Strait. This is the last part of the direct route of the Northwest Passage, and, excepting the large amounts of ice floes in Melv...
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