Further evidence of total ozone variation during the solar eclipse of 1995

A solar eclipse occurred across India on October 24, 1995. Vertical ozone column was measured at New Delhi (28.4°N, 77.1°E) by a Brewer spectrometer during this event. We found that at the time of maximum obscuration of the Sun the ozone column decreased by about 25 Dobson units (DU) from its preeclipse value. These results are compared with the measurements obtained elsewhere in India by other techniques during the same event. The NO2 slant column density measured at Ahmedabad (23.0°N, 72.4°E) by visible absorption spectroscopy showed a wavelike variation during the eclipse. These variations did not follow the variation of the obscuration of the Sun during the eclipse. Correlation between ozone column, UV flux, and NO2 column could not be established because observations were not taken at sufficiently close intervals.