Gary...
For each day, month, season and year, the way the weather patterns
develop around the globe is dependent on the interaction between the
oceans, land masses and our trip around the sun. At different times
different parts of the globe contribute more or less to the patterns.
There is no true single powerhouse that does it all. Articles such as
this identify a point in time and try to identify the biggest player at
that time.
Alan Rezek,
National Weather Service,
Charleston, WV.
Gary P. Burch wrote:
Alan,
Please explain if you can.?
Check out this link for an interesting article written by Jack Williams...
Jack William's Story
Gary,
Agree with Alan. Additionally, there is generally no free lunch in the
atmosphere. There's something called teleconnections in that the long
wave weather pattern across each of the hemispheres are typically
connected. If there is an unusual trough or cut-off low pressure system
over eastern Canada (our current state) then somewhere else there's
probably a corresponding ridge with warmer air pushed northward.
Essentially, large persistent upper level patterns affect and are
affected by the upwind and downstream flow.
Rich Kane
National Weather Service
Pittsbugh, PA.