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Post by douglavers on Jul 25, 2015 21:42:46 GMT
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Post by sigurdur on Jul 25, 2015 21:58:11 GMT
The DMI is 07/15/15 NSIDC is 7/24/15
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Post by Ratty on Jul 25, 2015 22:28:29 GMT
It's not only the trend but the reported area: DMI is just under 10msk and NSIDC just over 8msk. Both say they're plotting extent. Curious? Different algorithms? Different agendas?
BTW, the date on both graphs is now 24 Jul 2015.
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Post by douglavers on Jul 27, 2015 4:58:00 GMT
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Post by douglavers on Jul 27, 2015 9:49:24 GMT
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Post by graywolf on Jul 27, 2015 10:50:10 GMT
They both appear to have the current ice cover at the bottom of their 'two standard deviations' line?
One measure is 15% or more ice cover for the cut off point the other 30%
I think that one is also 3 days old when plotted and the other 5 days old (DMI?)
As it is the JAXA plot is now 4th lowest and 81km loss for 9 days will place us 3rd bottom.
The potential for a cool down appears to be receding with us only now expecting a 3 day break from current forcings.
As I posted over the past 2 years the fragmenting of the pack over winter ( Crackopalypse events) will cause problems if the ice is then subjected to a strong bottom melt season. The fact that multiple small floes are present in the warming water ( instead of one floe) leads to far more of the surface area of the ice being in contact with the ocean. At present we see this across Beaufort/ESS but it is also now spreading beyond 80N ( Laptev 'bite').
The continued influx , via the Alaskan current, of warm waters from 'the blob' is making this more of a concern as the pacific side of the basin fails back toward the pole.
Though I am not predicting a very low finish I can see the potential for surprises should we encounter end of season storms over Beaufort/central Basin ( as we saw in 2012?)
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Post by throttleup on Jul 27, 2015 23:26:15 GMT
Sorry. Just checking to see if there was any ice up North. Carry on...
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Post by sigurdur on Jul 28, 2015 2:05:34 GMT
Is that a golf course?
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Post by sigurdur on Jul 28, 2015 3:52:23 GMT
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Post by Ratty on Jul 28, 2015 5:13:06 GMT
I'm searching for a contour map of my area to see how high I am above sea level. Better safe than sorry ......
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Post by Andrew on Jul 29, 2015 6:04:45 GMT
looks like it is going to be another low ice summer in the Arctic.
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Post by acidohm on Jul 29, 2015 9:06:52 GMT
looks like it is going to be another low ice summer in the Arctic. Not unexpected Andrew....There is a well documented 'see saw' effect which effectively sees a balance between poles....One is usually high when the other is low in extent..
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Post by douglavers on Jul 29, 2015 22:13:44 GMT
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Post by acidohm on Jul 30, 2015 5:16:53 GMT
Hudson bay sst are well below average....very cold indeed!
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Post by graywolf on Jul 30, 2015 10:34:48 GMT
Acidhom said; "Not unexpected Andrew....There is a well documented 'see saw' effect which effectively sees a balance between poles....One is usually high when the other is low in extent.." Yet according to C.T. Today; arctic.atmos.uiuc.edu/cryosphere/Antarctic ice is .4 million up whilst Arctic is 1.5 million down?
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