Abstract The Meteorology Department of India has been measuring vertical column density of NO2 at Maitri (70.7°S, 11.7°E), Antarctica since July 1999 using a Mark IV, Brewer Ozone Spectrophotometer. Maitri is situated at the south of the Antarctic circle. An analysis of 6years of data shows that NO2 column has seasonal variation with a maximum value during summer. It is also found that during the period when sun does not set, the NO2 column exhibits a diurnal variation, with a peak around noon and lower values in the morning and afternoon hours. Using a simple steady-state chemical reaction scheme, an attempt has been made to explain these features.


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    Title :

    Seasonal and diurnal behavior of NO2 column density in Antarctica as observed by Mark IV, Brewer Ozone Spectrophotometer Number 153


    Contributors:

    Published in:

    Publication date :

    2010-08-27


    Size :

    8 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English