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On the stable stratification of the nocturnal lower troposphere inferred from lidar observations over Pune, India

Raj, PE and Devara, PCS (1993) On the stable stratification of the nocturnal lower troposphere inferred from lidar observations over Pune, India. Boundary-Layer Meteorology, 65 (1-2). pp. 197-205.

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Abstract

The nocturnal structure of the lower troposphere is studied using aerosol profile data (50–2800 m AGL) obtained with a bistatic, continuous wave, Argon ion lidar system during October 1986–September 1989 at Pune (18°32′ N, 73°51′ E, 559m AMSL), India. The top of the nocturnal groundbased inversion is taken as the height above ground where the negative vertical gradient in aerosol concentration first reaches a maximum. During the post-sunset period over this station, this height is as low as 160m and frequently lies around 550m. Greater heights are observed in pre-monsoon months and smaller ones during the southwest monsoon season. Positive vertical gradients in aerosol concentration, indicative of stable/elevated layers, appear frequently around 750m. Temporal variations of aerosol concentration gradients in two adjacent air layers, 920–1000m and 100–1100m, provide evidence that stability increases downward in the early night hours

Item Type: Article
Additional Information: Copyright of this article belongs to Kluwer Academic Publishers
Uncontrolled Keywords: aerosol profile; lidar; nocturnal structure; stable stratification, India, Pune
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 05 Jun 2015 06:56
Last Modified: 05 Jun 2015 06:56
URI: http://moeseprints.incois.gov.in/id/eprint/1067

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