Title :
Middle atmospheric dynamics through Lidar soundings: a few case studies
Author :
Devi, Minakshi ; Barbara, A.K.
Author_Institution :
Dept. of Phys., Gauhati Univ., Guwahati, India
Abstract :
Rayleigh lidar measurements taken during a campaign over/Frascati (42°N, 13°E) are analysed to realise system dynamics during instabilities and also layer responses towards propagating waves. Instabilities in the system are studied by characterising parameters defined by variabilities like temperature etc.. The paper discusses variations of Burnt frequency and temperature gradient for few noctural cases and studies situations when the static stability of stratosphere is observed to be lost. A few cases of wave propagation from stratosphere to mesosphere are discussed during this condition. Vertical structures of the waves are estimated from cross correlation parameters
Keywords :
atmospheric movements; atmospheric techniques; geophysical techniques; mesosphere; optical radar; remote sensing; remote sensing by laser beam; stratosphere; Burnt frequency; Frascati; Italy; Rayleigh lidar; dynamics; instabilities; laser remote sensing; layer response; lidar; measurement technique; mesosphere; middle atmosphere; propagating wave; stratosphere; temperature gradient; wave vertical structure; Acoustic propagation; Atmospheric measurements; Atmospheric waves; Computer aided software engineering; Frequency; Laser radar; Physics; Stability; Temperature distribution; Terrestrial atmosphere;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1993. IGARSS '93. Better Understanding of Earth Environment., International
Conference_Location :
Tokyo
Print_ISBN :
0-7803-1240-6
DOI :
10.1109/IGARSS.1993.322300
