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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 28, issue 6
Ann. Geophys., 28, 1199–1205, 2010
https://doi.org/10.5194/angeo-28-1199-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 28, 1199–1205, 2010
https://doi.org/10.5194/angeo-28-1199-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.

ANGEO Communicates 01 Jun 2010

ANGEO Communicates | 01 Jun 2010

Effects of the solar eclipse on 15 January 2010 on the surface O3, NO, NO2, NH3, CO mixing ratio and the meteorological parameters at Thiruvanathapuram, India

S. K. Sharma, T. K. Mandal, B. C. Arya, M. Saxena, D. K. Shukla, A. Mukherjee, R. P. Bhatnagar, S. Nath, S. Yadav, R. Gautam, and T. Saud S. K. Sharma et al.
  • Radio and Atmospheric Sciences Division, National Physical Laboratory, Council of Scientific and Industrial Research (CSIR), Dr. K S Krishnan Road, New Delhi-110 012, India

Abstract. In this paper, we present the effect of total solar eclipse on surface O3, NO, NO2, NH3, CO mixing ratio and the meteorological parameters on 15 January 2010 at Thiruvanathapuram, India. On the day of total solar eclipse (i.e., 15 January 2010), the decrease in mixing ratio of surface O3 and NO2 is observed after the beginning of the solar eclipse events (11:15 to 15:30). Decrease in surface O3 may be due to decreased efficiency of the photochemical ozone formation, whereas, mixing ratio of NO and NH3 have been changed following the night time chemistry. Surface O3 reduced to 20.3 ppb after 22 min of full phase of the eclipse. During the solar eclipse period, the ambient temperature and wind speed have decreased, whereas, relative humidity has increased as expected.

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