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Measurement of Surface Ozone and its Precursor NOx over Urban and Rural Locations in Kannur - A Tropical Coastal Site in India


Affiliations
1 Department of Atmospheric Science, Kannur University, Kannur, Kerala- 670 567, India
 

Diurnal variations of surface ozone and NOx (oxides of nitrogen) at Kannur University Campus (12.3N, 75.4E), a rural location and at Kannur Town, an urban location in Kannur (11.9N, 75.3E), a tropical coastal site in the state of India have been studied during winter months of 2009 and 2010. Being an industrially weak area, the study has the uniqueness to reveal the surface ozone production from its prominent precursor NOx at this site lying along the coastal belt of the Arabian Sea. The maximum value of surface ozone has been observed during day time and minimum during night at two locations. The rate of production and loss of surface ozone is higher at a rural location than an urban location in the same region. This highlights the substantial difference in the ozone chemistry over these two locations.

Keywords

Surface Ozone, NOx, Diurnal Variation, Air Pollution
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  • Measurement of Surface Ozone and its Precursor NOx over Urban and Rural Locations in Kannur - A Tropical Coastal Site in India

Abstract Views: 453  |  PDF Views: 134

Authors

T. Nishanth
Department of Atmospheric Science, Kannur University, Kannur, Kerala- 670 567, India
M. K. Satheesh Kumar
Department of Atmospheric Science, Kannur University, Kannur, Kerala- 670 567, India

Abstract


Diurnal variations of surface ozone and NOx (oxides of nitrogen) at Kannur University Campus (12.3N, 75.4E), a rural location and at Kannur Town, an urban location in Kannur (11.9N, 75.3E), a tropical coastal site in the state of India have been studied during winter months of 2009 and 2010. Being an industrially weak area, the study has the uniqueness to reveal the surface ozone production from its prominent precursor NOx at this site lying along the coastal belt of the Arabian Sea. The maximum value of surface ozone has been observed during day time and minimum during night at two locations. The rate of production and loss of surface ozone is higher at a rural location than an urban location in the same region. This highlights the substantial difference in the ozone chemistry over these two locations.

Keywords


Surface Ozone, NOx, Diurnal Variation, Air Pollution

References





DOI: https://doi.org/10.17485/ijst%2F2010%2Fv3i12%2F29861