Computer Science
Scientific paper
Apr 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ozts.nasa...24s&link_type=abstract
In NASA. Goddard Space Flight Center, Ozone in the Troposphere and Stratosphere, Part 1 p 24-32 (SEE N95-10590 01-47)
Computer Science
Annual Variations, Atmospheric Composition, Atmospheric Turbulence, Diurnal Variations, India, Mixing Layers (Fluids), Monsoons, Ozone, Ozonometry, Planetary Boundary Layer, Stratosphere, Troposphere, Cycles, Summer, Winter
Scientific paper
Surface ozone concentration at three Indian stations - New Delhi (28.6 deg N), Pune (18.5 deg N) and Thiruvananthapuram (formerly Trivandrum (8.3 deg N) - has been measured since 1973 with the help of an electrochemical continuous ozone recorder. These stations show diurnal, seasonal and annual cycles in surface ozone. Daily changes show that the minimum value occurs at sunrise and maximum in the afternoon. As regards seasonal variations, Thiruvananthapuram and Pune have a minimum value during monsoon season (June to August) while at New Delhi the minimum value occurs in January. However, New Delhi also records low ozone amount during monsoon season identical to the amounts show at Thiruvananthapuram and Pune. The annual cycles at these stations have been compared with similar measurements in the northern and southern hemispheres. The Indian measurements agree well with the annual cycles at these stations. Further, the analysis of the Indian data indicates that the major contribution in surface ozone comes from the natural sources like stratospheric-tropospheric exchange, turbulence, and mixing in the boundary layer; however, a small contribution from anthropogenic sources cannot be ruled out at Pune and probably at New Delhi, especially in winter and summer seasons.
Jayaraman Karthick
Shende R. R.
Sreedharan C. R.
Tiwari V. S.
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