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Title: Influence of anthropogenic emissions on tropospheric ozone and its precursors over the Indian tropical region during a monsoon
Authors: Beig G
Brasseur GP
Keywords: Atmospheric aerosols;Atmospheric chemistry;Boundary layers;Carbon monoxide;Gas emissions;Geographical regions;Ozone;Troposphere;Volatile organic compounds, Anthropogenic emissions;Tropical region;Tropospheric ozone, Meteorology, anthropogenic effect;atmospheric chemistry;emission inventory;monsoon;ozone;troposphere;volatile organic compound, Asia;Eurasia;India;South Asia
Issue Date: 2006
Publisher: Geophysical Research Letters
American Geophysical Union
Source: Volume no: 33
Issue no: 7
Abstract: An emission inventory of ozone precursors developed for the year 1991 and 2001 is used in a Chemistry-Transport Model (MOZART) to examine the tropospheric changes in ozone and its precursors that have occurred during the 1990s in the geographical region of India in response to enhanced human activities. The maximum variation in ozone concentration near the surface is found to be around 5-10 ppbv. It reaches 5-7 in the lower part of the free troposphere and 3-5 in the upper troposphere. The maximum decadal increase in CO and NOx is about 50-70 ppbv (10-18) and 0.5-1.5 ppbv (20-50), respectively in the boundary layer. However, in most of the troposphere, the relative magnitude reduces with height and becomes less then 5 above 10 km. The variation in some of the volatile organic compounds is found to be significant.
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