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Information - C2.4 Meteor Science and Techniques: Composition, Sources, Sinks, and Global Distribution of Meteoric Metals
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Every year approximately 100,000 tons of meteoric material impacts Earth's atmosphere near 100 km altitude. This material, of cometary and asteroidal original, is responsible for the formation of sodium, iron, calcium and potassium layers in the upper atmosphere. The global distribution of these metals is dependent upon the global spatial and temporal distribution of sporadic meteor flux, horizontal transport of these species and chemistry.
The atmospheric flux of this meteoric material is detected by both low power all-sky and high power large aperture meteor radar systems. Depending on the configuration of these systems the meteor characteristics such as heliocentric velocity, mass and orbit can be determined. Additionally, the plasma trail which remains after the ablation of a meteoroid can be probed by radar to estimate features of the upper atmosphere such as wind speed, temperature and composition. For the larger meteors, optical methods can also be utilized to estimate such parameters.
This session will focus on experimental meteor science and the impact of meteoric material on the structure of the upper atmosphere. We invite papers on all aspects of experimental meteor science including; novel radar and optical system designs, processing algorithms and new approaches to meteor science. To further understand the impact of meteors on the atmosphere we invite papers pertaining to estimated meteor flux rates, structure and variation of the meteoric metal layers and the impact of metal layers on the global atmosphere. This includes both modeling studies and experimental observations.
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