Keith (Southend) wrote:

Graham Easterling wrote:
Keith (Southend) wrote:


https://www.fnmoc.navy.mil/products/...sstanomaly.gif

I've noticed for a few weeks now how the global SST anomalies are
generally +ve in the north and -ve in the south. I was wondering whether
this has any significance to global patterns to come?
--
Keith (Southend)
http://www.southendweather.net
e-mail: kreh at southendweather dot net

As global warming causes the amount of arctic sea ice to decrease,
models show the heat equator being displaced northwards. Eventually we
are likely to end up with one pole ice free. (This has happened in the
past.)

Perhaps these SST maps are showing signs of this occuring.

Graham
Penzance


Interesting thought, although surely in the interim this would have the
opposite effect with the faster melting pole(s) in the summer months
introducing colder waters and an increased -ve SST anamoly. Whereas in
the winter the SST's would appear more +ve with less ice forming than of
the past.


In the north, I suspect that most of the melt is of sea-ice. This mel****er
occupies areas that would normally be ice-covered and would still show as
being warmer than normal. Perhaps the persistent negative anomaly in the SH
is mainly due to melting of land ice?

--
Graham Davis
Bracknell