Here is a blog post that might be of interest to some people he
http://www.wunderground.com/blog/Jef...?entrynum=1398

It is about the effects of the retreat of Arctic sea ice on the
weather in the Northern Hemisphere.

Cheers, Alastair.

On Sat, 12 Dec 2009 15:07:46 -0800 (PST), Alastair wrote in


Here is a blog post that might be of interest to some people he
http://www.wunderground.com/blog/Jef...?entrynum=1398

It is about the effects of the retreat of Arctic sea ice on the
weather in the Northern Hemisphere.

Thanks Alastair - That's a most interesting summary, particularly regarding
the positive feedbacks in the atmospheric system nearby.

--
Mike Tullett - Coleraine 55.13°N 6.69°W posted 12/12/2009 23:33:43 GMT

On Dec 12, 11:33*pm, Mike Tullett wrote:
On Sat, 12 Dec 2009 15:07:46 -0800 (PST), Alastair wrote in


Here is a blog post that might be of interest to some people he
http://www.wunderground.com/blog/Jef...?entrynum=1398

It is about the effects of the retreat of Arctic sea ice on the
weather in the Northern Hemisphere.

Thanks Alastair - That's a most interesting summary, particularly regarding
the positive feedbacks in the atmospheric system nearby.

--
Mike Tullett - Coleraine 55.13°N 6.69°W *posted 12/12/2009 23:33:43 *GMT

Hi Mike, what caught my eye was that it is having different effects in
different regions and in different seasons i.e " reduced Arctic sea
ice may also cause dry early winter conditions in the U.S. and the
Caribbean". Over the last few years it seems that we have had colder
early winters, but milder later winters. Is 2009-10 going to be a
repeat?

Cheers, Alastair
http://www.complexclimate.org

On Dec 13, 10:15*am, Alastair wrote:
On Dec 12, 11:33*pm, Mike Tullett wrote:

On Sat, 12 Dec 2009 15:07:46 -0800 (PST), Alastair wrote in


Here is a blog post that might be of interest to some people he
http://www.wunderground.com/blog/Jef...?entrynum=1398

It is about the effects of the retreat of Arctic sea ice on the
weather in the Northern Hemisphere.

Thanks Alastair - That's a most interesting summary, particularly regarding
the positive feedbacks in the atmospheric system nearby.

--
Mike Tullett - Coleraine 55.13°N 6.69°W *posted 12/12/2009 23:33:43 *GMT

Hi Mike, what caught my eye was that it is having different effects in
different regions and in different seasons i.e " reduced Arctic sea
ice may also cause dry early winter conditions in the U.S. and the
Caribbean". Over the last few years it seems that we have had colder
early winters, but milder later winters. Is 2009-10 going to be a
repeat?

Cheers, Alastairhttp://www.complexclimate.org

Interesting article to read. Although I am not sure I believe this:
'.....This resulted in a weaker jet stream with slower winds that
lasted a full six months, through fall and winter.The weaker jet
caused a weaker Aleutian Low and Icelandic Low during the winter,
resulting in a more negative North Atlantic Oscillation--a pattern
that usually brings reduced winter precipitation over Alaska and
Northern Europe and increased precipitation over Southern Europe. ' I
wish the atmosphere had been told this, what about our recent deluges
in the UK? I suppose 'usually' is the get-out here.
There is a bit too much attention paid to the dipoles which miss
detail. More 3D than that. The number, intensity and distribution of
hemispheric waves is the controlling factor.

I have a paper submitted with a few colleagues recently to the The
Journal of Climate,
'Discerning the influence of North Atlantic atmospheric and oceanic
forcing effects on
1900-2009 Greenland summer climate and melt'
Not Arctic sea ice per se, but hemispheric circulation is critical
here too.

Len Wood
Wembury, SW Devon