Physics
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jastp..65.1235s&link_type=abstract
Journal of Atmospheric and Solar-Terrestrial Physics, Volume 65, Issue 11-13, p. 1235-1243.
Physics
1
Eleven-Year Solar Cycle, Ozone, Temperature, Correlation, India
Scientific paper
The aim of the present paper is to study the solar response in the vertical structure of ozone and temperature over the Indian tropical region and a search for any mutual relationship between their solar coefficients on a decadal scale in the lower stratosphere. For the purpose, the data obtained by ozonesonde and Umkehr methods for the lower stratospheric ozone and that of the total ozone amount from Dobson spectrophotometer during the period 1979-2001 have been analyzed. These data are analyzed using the multi-functional regression model, which takes into account most of the known natural and anthropogenic signals. The NCEP- and MSU-satellite data for the temperature over this region have been used. Results indicate an in-phase correlation of around 0.5 between ozone and solar flux (F10.7) in the vertical structure over the equatorial station, Trivandrum (8.3°N) but no significant correlation over Pune (18.3°N). The solar components of ozone and temperature indicate an in-phase but poor correlation in the lower stratospheric altitudes over both stations. However, when total ozone content data is analyzed, it indicates a very high correlation (>=0.9) between the solar components of ozone and temperature. The solar trend in the vertical distribution of ozone is found to be of the order of 5-25% per 100 units of F10.7 solar flux for Trivandrum but it is relatively smaller (1.6-15.2%) over Pune. The solar dependence of temperature is found to be quite significant for the entire Indian tropical region with not much latitudinal variation.
Beig Gufran
Saraf N.
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