Nature of Silvery Clouds

The dynamics of the temperature of particles with a characteristic size of 10 –7 –10 –6  m at the boundary of Earth’s atmosphere and outer space is considered. Using graphite as an example, it is shown that at an altitude of 80–90 km from Earth’s surface, particles with a size of ∼5 × 10 –7  m or le...

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Bibliographic Details
Published in:Journal of communications technology & electronics 2023-12, Vol.68 (Suppl 2), p.S176-S183
Main Authors: Sviridov, A. N., Saginov, L. D.
Format: Article
Language:English
Subjects:
Communications Engineering
Earth surface
Engineering
Graphite
Networks
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Summary:The dynamics of the temperature of particles with a characteristic size of 10 –7 –10 –6  m at the boundary of Earth’s atmosphere and outer space is considered. Using graphite as an example, it is shown that at an altitude of 80–90 km from Earth’s surface, particles with a size of ∼5 × 10 –7  m or less can be heated above the temperature of the beginning of the glow (~900 K), reaching temperatures of more than 2000 K with a light turquoise glow. Based on the results obtained, it is concluded that the silvery clouds observed in the false dawn and after sunset from Earth’s surface are a cluster of white-hot nanoparticles.
ISSN:1064-2269
1555-6557
DOI:10.1134/S1064226923140164