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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/3279

Title: Rayleigh LiDAR investigation of stratospheric sudden warming over a low latitude station, Gadanki (13.5ºN; 79.2ºE) – a statistical study
Authors: Charyulu, DV
Sivakumar, V
Bencherif, H
Narayano Rao, D
Keywords: LiDAR
Rayleigh LiDAR
Middle atmosphere
Planetary waves
Sudden stratosphere warming
Gadanki (13.5ºN; 79.2ºE)
Remote sensing
Environmental monitoring
Issue Date: Aug-2007
Publisher: SPIE the International Society for Optical Engineering
Citation: Charyulu, DV, Sivakumar, V, Bencherif, H and Narayano Rao, D. 2007. Rayleigh LiDAR investigation of stratospheric sudden warming over a low latitude station, Gadanki (13.5ºN; 79.2ºE) – a statistical study. SPIE Optics + Photonics 2007: Lidar Remote Sensing for Environmental Monitoring VIII, San Diego, California, USA, 26-30 August 2007. SPIE Vol. 6681 (66810X), pp 8
Abstract: In this paper, the authors report the statistical characteristics of Stratospheric Sudden Warming (SSW) events observed over a low latitude station, Gadanki; 13.5°N, 79.2°E. The study uses 7 years (1998 to 2004) of quasi-continuous nighttime LiDAR temperature measurements, which corresponds to 312 observations. The statistical characteristics are presented in terms of major or minor, magnitude of warming, height of occurrence and stratopause descent with reference to the mean climatological profile. The warming events are classified into major or minor warming with respect to the observed warm temperature magnitude and reversal in the zonal wind direction in the polar region using National Centre for Environmental Prediction (NCEP) reanalysis data. In total, 14 SSW events observed and have been classified into 2 (14.3 %) major and 12 (85.7 %) minor warming events. The magnitudes of warm temperatures with respect to the mean winter temperature is in the range from 8.2 K to 18.1 K. Occurrence of SSWs are observed to accompany with the descent of stratopause layer from 0 km to 6.3 km with respect to the calculated mean winter stratopause height
Description: Published in the Proceedings pf SPIE the International Society for Optical Engineering
URI: http://hdl.handle.net/10204/3279
ISBN: 9780819468291
Appears in Collections:Laser physics and technology
General science, engineering & technology

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