Assessment of NO2 over a rural coastal region on a diurnal scale

Nitrogen dioxide (NO2) is an important atmospheric compound because of its link to ozone destruction in the stratosphere and its role as an ozone precursor in the troposphere. Availability of NO2 data over a period of one year (October 2013 – September 2014) has been utilized to assess the NO2 concentration levels over Karaikal, a rural coastal region along the south eastern coast of India. The diurnal and seasonal pattern of NO2 values over the study period has also been analyzed. The daytime and nighttime NO2 concentration pattern is found to follow the global pattern.