f Dynamics From Mesospheric Airglows

Mesospheric airglows (OH, Na, O2, and O), resulting<br>from oxygen recombination processes, are layered<br>between 80 and 105 km altitude. Vertical winds<br>resulting from dynamic processes are primarily responsible<br>for intensity variations in the layers. As<br>dynamical scales propagate through the layers, phase<br>information from intensity and temperature measurements<br>provide information on vertical wavelength,<br>and magnitudes of perturbation are related to wave<br>amplitudes. All the characteristics of waves including<br>growth and breaking characteristics are studied<br>using these remote signatures. Recently, Na lidar has<br>made major contributions to calibrations of the remote<br>signatures.