The Diurnal Variation of Turbopause Height.

Utilizing chemical release observations, and recently reported turbopause heights based upon mass spectrometer measurements of the ArN2 ratio, the diurnal variability of turbopause height is determined. Separation of the data, on a seasonal basis, shows that there is a strong winter diurnal variability with turbulence carrying to its highest altitude approximately 115 km between sunset and midnight, and minimizing at the noon hour. The spring data shows a similar variability, but at an overall lower altitude than that of winter, and a possible latitudinal difference, while the fall results demonstrate no real diurnal variation, and an average turbopause height at approximately 106 km. Author