Fig. 1. Formation mechanism schematics of O₂ A-band airglow

Fig. 2. Seasonal distribution of O₂ A-band night airglow at high latitudes in the Northern Hemisphere

Fig. 3. Vertical profile of atomic oxygen number density at high latitudes in the Northern Hemisphere

Fig. 4. Number density distribution of atomic oxygen, N₂ molecule, O₂ molecule, and seasonal temperature at high latitude in the Northern Hemisphere. (a) Atomic oxygen; (b) N₂ molecule; (c) O₂ molecule; (d) temperature

Fig. 5. Seasonal distribution of O₂ A-band night airglow at mid-latitudes in the Northern Hemisphere

Fig. 6. Seasonal distribution of O₂ A-band night airglow at equator

Fig. 7. Seasonal distribution of O₂ A-band night airglow at mid-latitudes in the Southern Hemisphere

Fig. 8. Seasonal distribution of O₂ A-band night airglow at high latitudes in the Southern Hemisphere

Fig. 9. Global radiance distribution of O₂ A-band night airglow in the first quarter. (a) January; (b) February; (c) March

Fig. 10. Number density distribution of atomic oxygen and mixed gas in the latitude dimension in the first quarter. (a) Atomic oxygen; (b) mixed gas

Fig. 11. Global radiance distribution of O₂ A-band night airglow in the second quarter. (a) April; (b) May; (c) June

Fig. 12. Global radiance distribution of O₂ A-band night airglow in the third quarter. (a) July; (b) August; (c) September

Fig. 13. Global radiance distribution of O₂ A-band night airglow in the fourth quarter. (a) October; (b) November; (c) December