On Jul 7, 11:59*am, "Lawrence Jenkins" wrote:
"Alastair" wrote in message

...
On Jul 6, 10:40 am, Dawlish wrote:



Notwithstanding data errors - which could always be the case and will
only come out in the wash, there has been an exceptional acceleration
of melting in the Arctic over the last few days. The ijis figures show
that over 40,000km2 of ice was lost in 3 days from 2nd to 5th July. I
can't see an ice loss of that magnitude, in that short a timespan,
anywhere in the sequence. The ice loss will show on the various sites'
graphs shortly, I would think.

http://www.ijis.iarc.uaf.edu/seaice/extent/plot.csv

I think it is more likely to be down to synoptics rather than anything
else, but it is interesting, nevertheless. Parts of the Arctic have
some very warm uppers at the moment and a large area of high pressure
is stretched across the North pole, more than likely giving strong
sunshine (for the Arctic, albeit with a low sun, of course) 24 hours a
day.

http://www.wetterzentrale.de/topkarten/fsavnnh.html

There was an ice loss of 870,781 sq km during the six days between
29th June and 4th July 2007.

IMHO, there seems to be a quasi biennial shape to the ice loss, which
may be related to the QBO. * A connection between that and the Arctic
oscillation has been reported, and fits with Philip's remarks about
the +ve *SLP anomaly repeating that from two year's ago.

Cheers, Alastair.

Alastair has the global temperatures increased drastically this year?

No, because sea surface temperatures are being held down by the
melting sea ice.

If you want to see a drastic increase you will have to wait for the
next big El Nino like that in 1998, or for the Arctic sea ice to melt
completely.

Cheers, Alastair.