"WeatherCam" wrote in message
...
Graham

We've been having a debate in the windsurfing forums that we are no longer
in the sea breeze season - can you shed any light on this, and or clarify
the definition of what constitiutes a "sea breeze?

Glider pilots certainly do not think of the sea breeze convergence season as
being over just yet.
That convergence on Tuesday showed up well on the satellite pictures.

It always seems quite remarkable how small the land/sea temperature
difference need be for a sea breeze to penetrate inland (even against the
gradient wind, ie produce the convergence) 2 degrees can suffice, but 3
degrees C is perhaps a better rule of thumb. Sea temperatures off Cornwall
would seem to be quite low this year at only 17 degrees (is this normal?
North Sea is warmer) so 20 degrees inland Cornwall would have been all that
was needed.

I liked the photo by the way.

Jack