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Ammonia concentration vis-a-vis meteorological conditions at Delhi, India

Kapoor, RK and Singh, G and Tiwari, S (1992) Ammonia concentration vis-a-vis meteorological conditions at Delhi, India. Atmospheric Research, 28 (1). pp. 1-9.

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Ammonia (NH3) is one of the gaseous pollutants in the earth's atmosphere. Its dominant natural source is by the bacterial break-down of amino acids in organic waste materials. Contribution from anthropogenic sources is insignificant. A programme of NH3 concentration measurements at Delhi was carried out for 5-year period from December 1982 to November 1987. The wind speed, temperature, relative humidity and rainfall were also measured to investigate their variation with NH3 concentration. The study showed: (1) no specific variation of NH3 concentration on day-to-day basis; (2) maximum concentration was observed during calm wind; (3) differences between easterly and westerly winds were trivial though marginally higher for easterly winds; (4) decrease in concentration was invariably found with increase in wind speed and rise in temperature. NH3 concentration, however, increased with increase of relative humidity. An attempt is made here to explain these changes in terms of vertical ventilation factor. Dominant source of ammonia appeared to be local.

Item Type: Article
Additional Information: Copyright of this article belongs to Elsevier Science
Uncontrolled Keywords: ammonia; meteorological condition, India, Haryana, Delhi
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 11 May 2015 11:26
Last Modified: 11 May 2015 11:26

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