11. Rising, descending or turbulent air in or above the lee waves can cause coffin corner ". 12. Once tule fog has formed, turbulent air is necessary to break through the temperature inversion layer. 13. "' Fractonimbus "'are a form of stratus fractus, developing under precipitation clouds due to turbulent air movement. 14. Its proximity to a warm, moist laboratory building also created turbulent air and other sources of image distortion. 15. Because it lacks a layer of turbulent air , it has much better seeing conditions than the pole itself. 16. In turbulent air natural stability would be the only way to maintain attitude ( and therefore altitude ). 17. So after a point, droplets grow by colliding and coalescing in turbulent air until they are heavy enough to fall. 18. Cleanrooms maintain particulate-free air through the use of either HEPA or ULPA filters employing laminar or turbulent air flow principles. 19. Gusty winds can occur when the strong winds at high altitudes are mixed down to the surface by turbulent air motions. 20. Turbulent air motions that produce thunderstorms can result when the temperature contrast between the lake and the overriding air is large.
