Global sodium variation revealed by satellite optical spectroscopic observations | 4/9/2018 | Staff
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Aurora light emission appears at high altitudes in the range 100-300 km in the polar atmosphere. Auroras are caused by energetic particles precipitating from space near the Earth.Auroral particle precipitation can induce many kinds of effects in the Earth's atmosphere.

Of interest are variations in the atmospheric composition induced by auroral particles. However, auroral responses of metallic species such as sodium (Na), which is distributed at between 80-110 km, are not well understood, and notably, there is no statistical survey available about this topic because of limited data.

Takuo - Tsuda - University - Electrocommunications - Tokyo

Now, Takuo Tsuda at the University of Electrocommunications, Tokyo (UEC, Tokyo), and colleagues have statistically investigated global Na responses to auroral activity using...
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