Indian Journal of Science and Technology

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Association between Surface Ozone and Solar Activity


Affiliations
1 Presidency College, Department of Physics, Chennai-600 005, India
2 Dhanalakshmi Srinivasan College of Engineering & Technology, Chennai-603 104, India
 

The possible relationship between surface ozone and smoothed sunspot numbers (SSN) has been studied. The sunspot data were collected from Udaipur Solar Observatory for 1996-2004. Surface ozone has been measured at Tranquebar (11°N, 79.9 °E), a tropical rural coastal site on the east coast of southeast India, during the same period. The measurements have shown that there exists a significant diurnal cycle/oscillation of average ozone with a maximum concentrations in the afternoon and average minimum ozone concentration at sunrise. Ozone measurements have also shown that the average higher concentrations [23 ± 9 ppbv] in May and lower concentration (17±7 ppbv) in October at this site. Further, the increase in surface ozone in association with increase in sunspot numbers is observed during May and October.

Keywords

Smoothed Sunspot Numbers, Surface Ozone, Significant Diurnal Cycle
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  • Association between Surface Ozone and Solar Activity

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Authors

R. Samuel Selvaraj
Presidency College, Department of Physics, Chennai-600 005, India
S. Tamil Selvi
Dhanalakshmi Srinivasan College of Engineering & Technology, Chennai-603 104, India
S. P. Vimal Priya
Presidency College, Department of Physics, Chennai-600 005, India

Abstract


The possible relationship between surface ozone and smoothed sunspot numbers (SSN) has been studied. The sunspot data were collected from Udaipur Solar Observatory for 1996-2004. Surface ozone has been measured at Tranquebar (11°N, 79.9 °E), a tropical rural coastal site on the east coast of southeast India, during the same period. The measurements have shown that there exists a significant diurnal cycle/oscillation of average ozone with a maximum concentrations in the afternoon and average minimum ozone concentration at sunrise. Ozone measurements have also shown that the average higher concentrations [23 ± 9 ppbv] in May and lower concentration (17±7 ppbv) in October at this site. Further, the increase in surface ozone in association with increase in sunspot numbers is observed during May and October.

Keywords


Smoothed Sunspot Numbers, Surface Ozone, Significant Diurnal Cycle

References





DOI: https://doi.org/10.17485/ijst%2F2010%2Fv3i3%2F29710