Articles | Volume 36, issue 5
Ann. Geophys., 36, 1471–1481, 2018
https://doi.org/10.5194/angeo-36-1471-2018
Ann. Geophys., 36, 1471–1481, 2018
https://doi.org/10.5194/angeo-36-1471-2018

Regular paper 26 Oct 2018

Regular paper | 26 Oct 2018

Variations of the 630.0 nm airglow emission with meridional neutral wind and neutral temperature around midnight

Chih-Yu Chiang et al.

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Subject: Earth's ionosphere & aeronomy | Keywords: Ionospheric variability
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Cited articles

Adachi, T., Yamaoka, M., Yamamoto, M., Otsuka, Y., Liu, H., Hsiao, C.-C., Chen, A. B., and Hsu, R.-R.: Midnight latitude-altitude distribution of 630-nm airglow in the Asian sector measured with FORMOSAT-2/ISUAL, J. Geophys. Res., 115, A09315, https://doi.org/10.1029/2009JA015147, 2010. 
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Chang, T. F., Cheng, C. Z., Chiang, C. Y., and Chen, A. B.: Behavior of substorm auroral arcs and Pi2 waves: implication for the kinetic ballooning instability, Ann. Geophys., 30, 911–926, https://doi.org/10.5194/angeo-30-911-2012, 2012. 
Chiang, C. Y., Chang, T. F., Tam, S. W.-Y., Huang, T. Y., Chen, A. B.-C., Su, H. T., and Hsu, R. R.: Global observations of the 630-nm nightglow and patterns of brightness measured by ISUAL, Terr. Atmos. Ocean. Sci., 24, 283–293, https://doi.org/10.3319/TAO.2012.12.13.01(SEC), 2013. 
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Short summary
Based on our simulation results, both temperature change and meridional neutral wind could cause the 630.0 nm nightglow intensity to vary, while the latter is more effective. An unexpected aspect of the results is the non-monotonic dependence of the emission rate on temperature, featuring a turning point as the temperature changes. Our findings of these turning temperature tendencies can guide future modeling attempts to match the observed nightglow brightness intensities.