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Atmospheric stability effects on aerosol structure and stratification

Devara, PCS and Raj, PE and Pandithurai, G and Naresh, P (1997) Atmospheric stability effects on aerosol structure and stratification. Journal of Meteorology, 22 (219). pp. 176-187.

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Abstract

This paper essentially addresses the structure and stratification of the nocturnal boundary layer (NBL) derived from the vertical profile measurements of aerosol concentration made with a computer-controlled Argon ion lidar system at the Indian Institue of Tropical Meteorology (IITM), Pune, India. Companions are made between the lidar observations during clear night-sky conditions and concurrent aerometric observations carried out on some selected experimental days. The results show multiple stratified aerosol layer structures in the nocturnal lower atmosphere, which drift either upward or downward depending on atmospheric stability conditions prevailing at different altitudes. The normalized aerosol concentration gradient (NCG) profiles indicate the variations in the nocturnal mixing depth from 200 to 426 m and that in the stable layer height from 325 to 725 m during the period of observations. The importance of such observations in the context of monitoring and/or assesment of airborne particulate pollutants over the urban environments associated with non-uniform terrain is discussed.

Item Type: Article
Additional Information: Copyright of this article belongs to Journal of Meteorology
Uncontrolled Keywords: aerosol; atmospheric stability; atmospheric stratification; boundary layer; nocturnal boundary layer; structure, India, Maharashtra, Pune
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 20 Feb 2015 07:10
Last Modified: 20 Feb 2015 07:10
URI: http://moeseprints.incois.gov.in/id/eprint/1715

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