Noctilucent clouds - Simulation studies of their genesis, properties and global influences

Details Noctilucent clouds - Simulation studies of their genesis, properties and global influences Noctilucent clouds - Simulation studies of their genesis, properties and global influences

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982p%26ss...30.1147t&link_type=abstract

Planetary and Space Science, vol. 30, Nov. 1982, p. 1147-1181.

Physics

144

Atmospheric Models, Cloud Physics, Noctilucent Clouds, Atmospheric Radiation, Computerized Simulation, Dust, Environment Effects, Gravity Waves, Ice, Particle Size Distribution, Temperature Effects, Time Dependence, Water Vapor

Scientific paper

A numerical model is presented for testing theories of the physical mechanisms of noctiluminescent clouds. The time-dependent, one-dimensional model describes the formation, evolution, and properties of the clouds as interactive ice crystals, meteoric dust, water vapor, and ionized air. Mesopause temperatures below 140 K are found to be necessary for the formation of the clouds, conditions existing only at high latitudes in the summer. No predominant nucleation particle could be identified for the formation of the clouds, although a time period of up to a day was determined as necessary for materialization, which lasts several days. Several atmospheric and environmental conditions were characterized which enhance the appearance of the noctiluminescent clouds. One conclusion reached is that the numerous launches necessary to build a solar power satellite system would not significantly exacerbate noctiluminescent cloud formation.

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