Extraterrestrial Material and Stratospheric Aerosols
The composition of stratospheric aerosols has been measured for about 40 years, with some of the most intense efforts during the 1960s. A recent technique, particle analysis by laser ionization mass spectrometry, has shown that many stratospheric sulfuric acid aerosols also contain ablated material from meteors. Meteoritic material may affect the size distribution of aerosols in parts of the stratosphere. The amount of meteoritic material in stratospheric aerosols is not consistent with the upper end of estimates of the flux of extraterrestrial material into the Earth’s atmosphere. Transport of stratospheric aerosols into the troposphere will preferentially deposit ablated meteoritic material at middle latitudes compared to the tropics or poles.
KeywordsLower Stratosphere Sulfate Aerosol Ablate Material Stratospheric Aerosol Cosmic Dust
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