Lidar investigations on the optical and dynamical properties of cirrus clouds in the upper troposphere and lower stratosphere regions at a tropical station, Gadanki, India (13.5°N, 79.2°E)

摘要: High altitude cirrus clouds are composed mainly of ice crystals with a variety sizes and shapes. They have large influence on Earth's energy balance global climate. Recent studies indicate that the formation, dissipation, life time, optical, micro-physical properties influenced by dynamical conditions surrounding atmosphere like background aero- sol, turbulence, etc. In this work, an attempt has been made to quantify some these character- istics using lidar mesosphere-stratosphere-troposphere (MST) radar. Mie 53 MHz MST radar measurements over 41 nights during period 2009 2010 from tropical station, Gadanki, India (13.5°N, 79.2°E). The optical microphysical proper- ties along structure dynamics presented as observed under different atmospheric conditions. study reveals manifestation forms preferred formation in 13 14 km altitude. There considerable differences obtained among showing significant anomalous behavior 2010. show relatively high asymmetry multiple scattering effects. anomalies found may be attributed turbulence noticed atmosphere. results clear correlation between crystal mor- phology prevailing observational period. © 2014 Society Photo-Optical Instrumentation Engineers (SPIE) (DOI: 10