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Title: Lower atmospheric water vapour measurement at coastal Trivandrum (8.33°N, 77°E) using a high resolution Raman lidar
Authors: Radhakrishnan, S R
Satyanarayana, M
Pillai, V P Mahadevan
Presennakumar, B
Rao, D Ramakrishna
Murthy, V S
Keywords: Laser remote sensing;Vibrational Raman lidar;Differential atmospheric transmission;Atmospheric water vapour;Atmospheric aerosols;High Resolution Regional Weather Model;Extinction coefficient
Issue Date: Oct-2008
Publisher: CSIR
Abstract: Near simultaneous measurement of atmospheric aerosol and water vapour is described in this paper, making use of the Nd: YAG laser based multiwavelength lidar system, designed and developed in-house at Space Physics Laboratory, Vikram Sarabhai Space Centre, Trivandrum, India. In the present study, the vibrational Raman scattered signals of N₂ and H₂O were used for the measurement of atmospheric water vapour and aerosol extinction. Nighttime water vapour profiles are obtained in the 1-6 km altitude regions in the lower troposphere. Necessary aerosol corrections to water vapour profiles are also done. Lidar derived water vapour profiles are compared with the profiles calculated from High resolution Regional Weather Model (HRM) available during the same period.
Page(s): 353-359
ISSN: 0367-8393
Appears in Collections:IJRSP Vol.37(5) [October 2008]

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