Fred, I'm not sure what you are referring to. Can you be more specific? G.
Fred Atkinson wrote: > i believe its called atmoshperic inversion. > ----- Original Message ----- > From: Gordon <[EMAIL PROTECTED]> > To: J.P. Morere <[EMAIL PROTECTED]> > Cc: RCSE <[EMAIL PROTECTED]> > Sent: Sunday, March 03, 2002 11:09 AM > Subject: Re: [RCSE] River of lift. > > > >>J.P. >>What you are saying has relevance in some cases >>and would manifest itself more as thermal activity. >>Wave air is created by moving air having to go >>over objects such as a mountain, cliff, tree line >>or a large building, just like on the slope. >>In this case, the air or wave can be very high in >>comparison to the object creating it. >>Sometimes unreasonably so. >>I have had guys standing right next to me for an >>hour watching me fly in the same relative place >> all the time telling me that it must be a thermal, >>that no wave could be that high or strong. >> >>The wind on the ground might only be 10-15 knots >>but up at 1000-2500 ft it can be moving at far >>greater speeds, and usually is. My planes always >>come alive and dance around in all the lift at >>that altitude, sometimes scaring the crap out of >>me. No thermal I have ever been in has had the >>same effect on me or my plane. >>As for onshore/offshore wind.... this is true >>during the day as the land heats up and rises >>drawing in the cooler air from the water, but the >>opposite happens at night, when the land cools >>down and the water is now warmer having heated up >>during the day and is now pulling the air out over >>the water.(offshore). >>BTW, Waves can be found at 18,000 ft. and above. >> >> >>Gordon, Waving goodbye. >> >> >> >> >>J.P. Morere wrote: >> >> >>>This may be related to the 'onshore/offshore' wind effects. The water >>>is a temperature moderator, and is usually cooler than the shore. During >>>the day, the sun heats the shoreline nicely, and thus warms the air >>>above it, but the water temperature changes very little. This warm >>>onshore air rises, and is replaced by the cooler offshore air - which is >>>subsequently warmed and the cycle continues, as long as there is heat >>>input like sunshine. That 10-12 knot wind you feel is only at surface >>>level. The air above could be going any which way! Ever noteced that >>>wherever you are around a VERY large body of water the wind usually is >>>blowing onshore from over the water? >>> >>>Good sky; >>>J.P. >>> >>>Stephen Syrotiak wrote: >>> >>> >>>>Hi Gordon, >>>>Thanks for your believable theory. I've flown my Escape right off the >>>>beach in S. CT wondering all the time what the hell kept it up, at near >>>>spec height. The plane was probably right over the water's edge and >>>>flying like it was in wave. i.e. just hovering at windspeed. I >>>>couldn't believe it was a wave at the time. Surface WS were only 10-12 >>>>kt. This happened many times and I landed only because I got bored and >>>>needed an aerobatic fix. >>>> >>> >>> >> >>RCSE-List facilities provided by Model Airplane News. Send "subscribe" >> > and "unsubscribe" requests to [EMAIL PROTECTED] > > > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
