Response of the mesopause airglow to solar activity inferred from measurements at Zvenigorod, Russia

Annales Geophysicae

V.Perminov¹  N.Pertsev¹ 

DOI  :  10.5194/angeo-26-1049-2008

学科分类：地球科学(综合)

来源: Copernicus Publications

【 摘 要 】

Ground-based spectrographical observations of infrared emissions of themesopause region have been made at Zvenigorod Observatory (56 N, 37 E),located near Moscow, Russia, for 670 nights of 2000–2006. Thecharacteristics of the hydroxyl and molecular oxygen (865 nm) airglow,heights of which correspond to 87 and 94 km, are analyzed for finding theirresponse to solar activity. The measured data exhibit a response to theF_10.7solar radio flux change, which is 30%–40%/100 sfu inintensities of the emissions and about 4.5 K/100 sfu in hydroxyl temperature.Seasonal variations of the airglow response to solar activity are observed.In winter it is more significant than in summer. Mechanisms that may providean explanation of the solar influence on intensities of the emissions andtemperature are considered. Radiative processes not involving atmosphericdynamics appear insufficient to explain the observed effect.

【 授权许可】

Unknown