An initial assessment of ground based lidar backscattered signal in Penang Island

Author

Fuyi, T. ; Abdullah, K. ; Lim, H.S. ; MatJafri, Mohd Zubir ; Welton, Ellsworth J. ; Lolli, Simone

Author_Institution

Sch. of Phys., Univ. Sains Malaysia, Minden, Malaysia

fYear

2013

fDate

1-3 July 2013

Firstpage

228

Lastpage

232

Abstract

A backscattering lidar at 355 nm wavelength with Raman channel produced by Raymetrics was operated in Universiti Sains Malaysia (USM) in Penang Island. This lidar is currently taking measurements of the vertical distribution of clouds and aerosol layers over Penang Island. Background subtraction such as solar radiation for the range corrected signal during day time is needed. Dead-time correction was then applied to improve the lidar signal. In order to obtain the better signal for near and far range, gluing both analog and photon counting (PC) is necessary. Temporal evolution is plotted to determine variation planetary boundary layer (PBL) structure and the altitude of PBL also can be identify from time to time. Cloud distribution and cloud base layer can be retrieved from the temporal evolution plot and aerosol concentration pattern also can be determined.

Keywords

aerosols; atmospheric boundary layer; atmospheric measuring apparatus; atmospheric radiation; atmospheric techniques; clouds; optical radar; PBL altitude; PBL structure; Penang Island; Raman channel; Raymetrics; Universiti Sains Malaysia; aerosol concentration pattern; aerosol layers; background subtraction; cloud base layer; cloud vertical distribution; dead-time correction; ground based lidar backscattered signal; photon counting; planetary boundary layer; solar radiation; temporal evolution plot; wavelength 355 nm; Aerosols; Atmospheric measurements; Backscatter; Clouds; Extraterrestrial measurements; Laser radar; Photonics; aerosol; backscatter; cloud; lidar; planetary boundary layer; range corrected signal;

fLanguage

English

Publisher

ieee

Conference_Titel

Space Science and Communication (IconSpace), 2013 IEEE International Conference on

Conference_Location

Melaka

ISSN

2165-4301

Type

conf

DOI

10.1109/IconSpace.2013.6599470

Filename

6599470