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Kundu & Jain 1993
Kundu, N. and Jain, M. (1993). Total ozone trends over low latitude Indian stations. Geophysical Research Letters 20: doi: 10.1029/93GL03306. issn: 0094-8276.

The network of Dobson spectrometers in India have been measuring total ozone over several stations for the last three decades. Measurements over three stations Srinagar, Delhi, and Kodaikanal are considered for trend analysis and its latitudinal variation. The data series extends over the period 1965--91 except for Srinagar where data is available only upto 1988. A statistical model having terms for different variabilities such as linear trend, six monthly, seasonal and biennial oscillations, as well as, long term solar variability is used. Since the data base is the monthly average ozone value, short term noise is eliminated. As the calculated and observed ozone data agree with each other the linear trend could be obtained from the model. The trend near the equator, though small, is positive, decreasing to negative values at higher latitudes. The analysis of 11 years TOMS data by other workers does not show the positive trend in the equatorial region. The trend of Dobson data near 30¿N latitude is less negative than that obtained from TOMS data and agrees better with the theoretical model. ¿ American Geophysical Union 1993

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Keywords
Atmospheric Composition and Structure, Middle atmosphere—composition and chemistry, Atmospheric Composition and Structure, General or miscellaneous
Journal
Geophysical Research Letters
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Publisher
American Geophysical Union
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