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Meteoric smoke production in the atmosphere
Author(s) -
Kalashnikova O.,
Horányi M.,
Thomas G. E.,
Toon O. B.
Publication year - 2000
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/1999gl011338
Subject(s) - meteoroid , atmosphere (unit) , nucleation , smoke , atmospheric sciences , astrobiology , environmental science , cosmic dust , cosmic ray , physics , astrophysics , meteorology , thermodynamics
Nanometer‐sized smoke particles produced during ablation of incoming micrometeorites influence the ion chemistry in the 80–120km region and are believed to play an important role in the nucleation of mesospheric ice particles. We present a new model of cosmic dust ablation and smoke production in the Earth's atmosphere using realistic size and velocity distributions of the incoming dust particles. We show that, while the seasonal changes in our atmosphere can be safely neglected, the shape of micro‐meteoroids strongly affects their ablation.