Articles written in Journal of Earth System Science
Volume 120 Issue 2 April 2011 pp 291-300
A critical analysis has been made on the long-term yearly and seasonal variations of ozone concentration at Varanasi (25°N, 83°E), India and Halley Bay (76°S, 27°W), a British Antarctic Service Station. The effect of O3 depletion on night airglow emission of Li 6708 ˚A line at Varanasi and Halley Bay has been studied. Calculations based on chemical kinetics show that the airglow intensity of Li 6708 ˚A line has also been affected due to the depletion of O3 concentration. The yearly variations and seasonal variations of intensities of Li 6708 ˚A line for the above two stations are shown and compared. It has been shown that the rate of decrease of intensity of Li 6708 ˚A line was comparatively more at Halley Bay due to dramatic decrease of Antarctic O3 concentration.
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