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Lidar profiling of aerosol scavenging parameters at a tropical station, Pune, India

Saha, SK and Chate, DM and Devara, PCS (2014) Lidar profiling of aerosol scavenging parameters at a tropical station, Pune, India. International Journal of Remote Sensing, 35 (5). pp. 1956-1965.

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Abstract

In this study, we deal with observations of aerosol column content (height integration of vertical distribution of aerosol number density) that have been carried out using an Ar+ lidar for three different measurement cycles (each cycle consisting of three experimental days associated with non-rain, rain, and non-rain, respectively) of weekly spaced observations for pre-monsoon (March/April 1994), monsoon (September 1991), and post-monsoon (October 1998). Based on these observed profiles of aerosol number concentration on rainy days with respect to those on non-rainy days, vertical distributions of scavenging collection efficiencies (SCEs) are computed and discussed in this article. The SCE is found to decrease from 0.3 to 0.01 between the heights, 100 and 800 m for thunderstorm rain in April 1994, and during monsoon, it increases from 0.1 to 0.7. In the October 1998 episode, SCE was found to increase initially from 0.35 to 0.75 for heights between 40 and 200 m and thereafter decrease to 0.35 in the height interval of 200–800 m.

Item Type: Article
Additional Information: Copyright of this article belongs to Taylor and Francis.
Uncontrolled Keywords: Atmospheric layers; Cloud properties; Collection efficiency; Number concentration; Rainfall intensity; Scavenging coefficients; Tropical stations; Vertical distributions, Atmospheric thermodynamics; Optical radar; Rain; Thunderstorms, Aerosols, aerosol; cloud cover; concentration (composition); lidar; monsoon; precipitation intensity; thunderstorm, India; Maharashtra; Pune
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 04 Dec 2014 11:24
Last Modified: 04 Dec 2014 11:24
URI: http://moeseprints.incois.gov.in/id/eprint/911

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