Long-term ozone decline and its effect on night airglow intensity of Li 6708 Å at Varanasi (25°N, 83°E) and Halley Bay (76°S, 27°W)

Journal of Earth system science

S Mukhopadhyay3²  I Saha2¹  P K Jana1³ 

[1] Department of Chemistry, Metia High School (H.S.), Matia, Basirhat, North-24 Parganas 743 437, India.$$;Department of Chemistry, Jadavpur University, Kolkata 700 032, India.$$;Department of Chemistry, Government College of Education, Banipur, North-24 Parganas 743 233, India.$$

关键词: Ozone depletion;    airglow emission;    excitation mechanism;    intensity.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

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 Å line at Varanasi and Halley Bay has been studied. Calculations based on chemical kinetics show that the airglow intensity of Li 6708 Å line has also been affected due to the depletion of O3 concentration. The yearly variations and seasonal variations of intensities of Li 6708 Å line for the above two stations are shown and compared. It has been shown that the rate of decrease of intensity of Li 6708 Å line was comparatively more at Halley Bay due to dramatic decrease of Antarctic O3 concentration.

【 授权许可】

Unknown