Highlights This paper discusses the results from the ship-borne aeronomy experiments from the Indian region. Thermospheric airglows near the geographic equatoron certain daysexhibited Midnight brightness. The simulations using a quasi-2D model suggest that it could be associated with the MTM phenomenon.
Abstract This paper discusses the results from the aeronomy experiment carried out using a multiwavelength photometer operated onboard Sagar Kanya ship from the Indian region, which covered a latitude region from 14.5 N to 2S (7° to −10° Dip latitudes) along the same longitude region (∼72-75E). It has been found that the thermospheric airglows, especially the OI 630.0 nm emission near to the geographic equator exhibits ‘Midnight Brightness’ on different days of observations. Though the magnitudes were found to be less, the OI 777.4 nm and OI 557.7 nm emissions also exhibited intensity variations on those days, indicating a common causative mechanism for the same. The simulation studies using a quasi-two dimensional ionospheric model, revealed that such an enhancement could be due to the F-region collapse associated with the Midnight Temperature Maximum (MTM) phenomenon.
Signature of the midnight temperature maximum in thermospheric oxygen airglow emissions: Results from the ship-borne airglow measurements from the Indian region
Advances in Space Research ; 69 , 11 ; 4129-4139
2022-03-11
11 pages
Article (Journal)
Electronic Resource
English
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