Magnesium Chemistry in the Upper Atmosphere
Final rept. 11 Dec 2008-11 Dec 2010
LEEDS UNIV (UNITED KINGDOM) SCHOOL OF CHEMISTRY
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Metallic species are deposited into the Earths upper atmosphere by the ablation of approximately 50 tonnes of interplanetary dust that enters the atmosphere each day. The dust undergoes frictional heating to its melting point approx. 1800 K, after which metallic species ablate and are deposited in the mesosphere-lower thermosphere MLT region of the atmosphere 70-120 km. Magnesium is one of the most abundant metals in the MLT, with layers of Mg being observed by rocket-borne mass spectrometry and satellite observations of the earths dayglow.
- Atmospheric Physics
- Physical Chemistry
- Metallurgy and Metallography