Jet Streams Dec 7, 2012 6:40:47 GMT
Post by Pooh on Dec 7, 2012 6:40:47 GMT
There is historical data beginning Jan 2008. See topic: Medieval Warm Period/Little Ice Age
Jet Stream Analyses and Forecasts at 300 mb
The "Archives" link (second line in the yellow title bar) takes you to a menu of various regions by month, and animations. However, the detail may not take you earlier than Jan 2008. Not too bad, seeing that the existence of the jet stream was unknown before WW II.
Glennkoks responded that a preliminary detection of the jet stream was earlier:
"In the 1920s, a Japanese meteorologist, Wasaburo Oishi, detected the jet stream from a site near Mount Fuji. He tracked pilot balloons, also known as pibals (balloons used to determine upper level winds), as they rose into the atmosphere. Oishi's work largely went unnoticed outside Japan.
"I suspect but have no way of proving it that it was his work that gave rise to the incendiary bombs that the Japanese used against the U.S. during WWII. They had to have some idea of the height and speed of the jetstream to set the timers on the bombs they dropped on us."