Sailplane flights into a classical Appalacian mountain wave as shown by the ESSA 9 weather satellite

Abstract

..............On February 21, 1970 a satellite photograph relation to wave soaring occurred with much more detail than before...  Over the past six years a great deal has been learned about mountain waves over and to the lee of the Appalacians from New England to the Carolinas, due mainly to flights made by sailplane pilots and from photographs from weather satellites along with some observations by pilots of powered aircraft...