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Effect of lightning activity on surface NO

Pawar, V and Pawar, SD and Beig, G and Sahu, SK (2012) Effect of lightning activity on surface NO. Journal of Geophysical Research D: Atmospheres, 117 (5).

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We study the effect of lightning activity on surface NO x and O 3 over Pune, India (18.54°N, 73.81°E) for the years 2005 to 2008 during thunderstorm events in premonsoon and monsoon periods. Surface concentration of NO x is found to be increased significantly at the dissipation stage of thunderstorms. It is observed that increase in NO x greater than titration threshold level reduces the surface ozone concentration. However, in some cases when NO x increases but it does not reach the titration threshold limit, it helps in the production of ozone. Thus, results suggest that lightning production of NO x inside a thunderstorm can lead to significant impacts on surface ozone concentrations in the tropics. Enhancement in NO x at the surface after thunderstorm activity is much greater in premonsoon periods compared to the monsoon period.

Item Type: Article
Additional Information: Copyright of this article belongs to American Geophysical Union.
Uncontrolled Keywords: Lightning activity; Pre-monsoon; Significant impacts; Surface concentration; Surface ozone concentrations; Threshold levels; Threshold limits; Thunderstorm activity, Atmospheric thermodynamics; Ozone; Thunderstorms; Titration, Lightning, atmospheric chemistry; atmospheric electricity; concentration (composition); dissipation; lightning; nitric oxide; ozone; thunderstorm, India; Maharashtra; Pune
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 21 Dec 2013 07:17
Last Modified: 21 Dec 2013 07:17

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