The paper presents the effect of O3 depletion on night airglow emission of Na 5893 Å line at Dumdum (22.5°N, 88.5°E), India and Halley Bay (76°S, 27°W), a British Antarctic service station. Calculations based on chemical kinetics show that the airglow intensity of Na 5893 Å line will also be affected due to the depletion of O3 concentration. The nature of yearly variation and seasonal variation of the intensity of Na 5893 Å line for the above two stations are shown and compared. It is shown that the rate of decrease of intensity of Na 5893 Å line is comparatively more at Halley Bay due to the dramatic decrease of Antarctic O3 concentration. A possible explanation for this dramatic decrease of Antarctic O3 concentration is also mentioned.
Volume 129, 2020
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