Vertical distribution of aerosols over an urban continental site in India inferred using a micro pulse lidar

Satheesh, SK and Vinoj, V and Moorthy, Krishna K (2006) Vertical distribution of aerosols over an urban continental site in India inferred using a micro pulse lidar. In: Geophysical Research Letters, 33 (5). L20816-L20816.

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Abstract

Knowledge of the vertical distribution of aerosols in the atmosphere is important in estimating its radiative forcing. While aircraft based measurements over two locations in India have provided valuable information, the temporal coverage of measurements was limited. In this paper, we examine the vertical distribution of aerosols over a continental, urban location, Bangalore in southern India, using a micro pulse lidar (MPL) operated for about two years (2004 and 2005), and infer the effects of the boundary layer dynamics. Early morning hours are characterized by a shallow aerosol layer, a few hundred meters thick. As day advances, the strong convective eddies are seen to transport the aerosols vertically up to more than 1500 m. Seasonal changes in the aerosol vertical structure, contribution of the boundary layer aerosols to the column optical depth as well as the frequency of occurrence of clouds within aerosol layer are examined.

Item Type:	Journal Article
Publication:	Geophysical Research Letters
Publisher:	American Geophysical Union
Additional Information:	Copyright of this article belongs to American Geophysical Union.
Department/Centre:	Division of Mechanical Sciences > Centre for Atmospheric & Oceanic Sciences
Date Deposited:	07 Jun 2007
Last Modified:	12 Jan 2012 08:08
URI:	http://eprints.iisc.ac.in/id/eprint/11167

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