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Study of surface ozone behaviour at urban and forested sites in India

Khemani, LT and Momin, GA and Rao, PSP and Vijayakumar, R and Safai, PD (1995) Study of surface ozone behaviour at urban and forested sites in India. Atmospheric Environment, 29 (16). pp. 2021-2024.

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Abstract

Surface ozone concentrations were measured continuously at Pune for a period of one year during 1991-1992 and for a period of 10 days in January 1992 at Upper Kargudi and in April 1992 at Bandipur, core zones of the Nilgiri Biosphere Reserve forests located in Tamil Nadu and Karnataka States, respectively, in south India. There is a marked diurnal variation in the concentration of surface ozone which clearly follows the diurnal variation of surface temperature. The monthly maximum concentration was observed during the summer season (March-May) and minimum during the monsoon season (June-September). The annual average concentration of ozone was 27 ppb and hourly values varied between 2 and 69 ppb at Pune. However, in the forest environment the 10-day average concentration was 15 ppb and hourly values varied between 5 and 31 ppb. The values of surface ozone at Pune and forest environment are below the U.S. EPA standard (113 ppb, maximum 1 h permissible concentration).

Item Type: Article
Additional Information: Copyright of this article belongs to Elsevier Science
Uncontrolled Keywords: ozone; rain, air monitoring; air pollution; air temperature; circadian rhythm; conference paper; forest; pollution transport; priority journal; seasonal variation; summer; urban area; biosphere; environment; India; seasonal variation; temperature, Air Pollution; Forests; India; Ozone; Surface; Urban Areas, diurnal variation; forest; ozone concentration; seasonal variation; urban zone, India, Karnataka, Nilgiri Reserve; India, Maharashtra, Pune; India, Tamil Nadu, Nilgiri Reserve
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 29 May 2015 09:34
Last Modified: 29 May 2015 09:34
URI: http://moeseprints.incois.gov.in/id/eprint/1016

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