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Behavior of boundary layer ozone and its precursors over a great alluvial plain of the world: Indo‐Gangetic Plains
Author(s) -
Beig G.,
Ali K.
Publication year - 2006
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2006gl028352
Subject(s) - foothills , ozone , alluvium , alluvial plain , environmental science , convergence zone , pollutant , seasonality , weathering , boundary layer , range (aeronautics) , atmospheric sciences , hydrology (agriculture) , climatology , geology , geography , meteorology , chemistry , geochemistry , ecology , paleontology , physics , cartography , organic chemistry , biology , thermodynamics , geotechnical engineering , materials science , composite material
We investigate the special behavior in the distribution of boundary layer ozone and its precursors over world's most extensive tract of uninterrupted alluvium and intensively farmed zones situated in the foothills of Himalayas as major river basin, known as Indo‐Gangetic Plains (IGP). The study makes use of a Chemistry‐Transport Model forced with dynamical fields and new emission inventories of pollutants established for 2001. It is found that the IGP region is highly vulnerable to human induced pollutant emissions due to conducive synoptic weather pattern which make it a source regions of ozone precursors within which these tracers remain confined and reinforce photochemical production of ozone. In addition, the continental tropical convergence zone and long range transport play a vital role. As a result, elevated levels of ozone concentration (maximum up to 80 ppbv) and its precursors with cellular structure of spatial variation with large seasonality are noticed.