On Dec 14, 1:43*pm, "Martin Rowley"
wrote:
"rinceboy" wrote in message
...
Ideas of a stratospheric influence on tropospheric weather and
climate
has been around for quite a while, and is currently undergoing a
push
again. If you're interested in Strat-Trop coupling then a good place
to look for current research is on Dave Thompson's Annular Mode
website - there's a repository of papers there.
http://www.atmos.colostate.edu/ao/ResPapers/index.html
... that's great, many thanks!
Martin.
--
Martin Rowley
West Moors, East Dorset (UK): 17m (56ft) amsl
Lat: 50.82N * Long: 01.88W
NGR: SU 082 023
Excellent, I echo Martin's comments.
This one is very interesting and appears to be the paper that Adam
Scaife was referring to when I emailed him following a Times Article
he'd written linking the very wet weather of the summer of 2007 to La
Nina.
Dear Paul
We are still looking into this link. The main points are likely to be
written up into a journal paper with colleagues but are still being
investigated. In summary we do find a link between summer climate in
northernmost Europe and La Nina. A very similar pattern emerged in
seasonal forecasts for this summer and historical analyses. However,
it is only a contributing factor to the conditions this summer and
does not of course provide a full explanation. Sorry I can't provide
more information as yet, best Adam
(Adam said later that I could use his response on TWO, which is why I
reproduce it here).
The role of the stratosphere in the European climate response to El
Niņo
S. Ineson & A. A. Scaife
El Niņo/Southern Oscillation (ENSO) is the largest natural interannual
climate signal in the tropics; oscillations between warm El Niņo and
cold La Niņa phases occur every few years. The effects are felt not
only in the centre of action, the tropical Pacific region, but around
the globe. Observational studies show a clear response in European
climate to ENSO in late winter. However, the underlying mechanisms of
the link are not yet understood. Here we use a general circulation
model of the atmosphere, that has been extended into the upper
atmospheric layers, to provide end-to-end evidence for a global
teleconnection pathway from the Pacific region to Europe via the
stratosphere. We present evidence for an active stratospheric role in
the transition to cold conditions in northern Europe and mild
conditions in southern Europe in late winter during El Niņo years. In
our experiments, this mechanism is restricted to years when
stratospheric sudden warmings occur. The response in European surface
climate to the El Niņo signal is large enough to be useful for
seasonal forecasting.
Nature Geoscience 2, 32 - 36 (2009)
Published online: 7 December 2008 | doi:10.1038/ngeo381
The possible stratosphere link is very interesting. Not really SSWs,
but it stops me wondering where the research was!
Again, TY.