Re-evaluation of the Micrometeor Mass Flux into the Earth's Atmosphere Using Arecibo UHF Radar Data.

Details Re-evaluation of the Micrometeor Mass Flux into the Earth's Atmosphere Using Arecibo UHF Radar Data. Re-evaluation of the Micrometeor Mass Flux into the Earth's Atmosphere Using Arecibo UHF Radar Data.

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsa21b..05m&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SA21B-05

Astronomy and Astrophysics

Astronomy

0305 Aerosols And Particles (0345, 4801, 4906), 0335 Ion Chemistry Of The Atmosphere (2419, 2427), 0340 Middle Atmosphere: Composition And Chemistry

Scientific paper

Thanks to the advanced search and analysis algorithms developed and written by S. J. Briczinski and J. D. Mathews, CSSL-Penn State, a highly homogeneous sample of nearly 20,000 events in 2001 and 2004 has been obtained and subjected to an extensive statistical analysis. Significant correlations of several dynamical parameters of decelerating particles with height have been found leading to the recovery of particle density. Previously radii were derived assuming the density was the canonical 3000 kg/m3. The density histogram can be deconvolved to compensate for inclination with the beam and possible variations of shape through a variable drag coefficient. Now that individual particle densities are available, revised radii and mass histograms have been derived. The new results and their implications for the dust component of the Earth's upper atmosphere will be discussed in detail. This effort has been supported by NSF Grant AST 02-05848 to The Pennsylvania State University and AST 02-05974 to SUNY-Geneseo The Arecibo Observatory is part of the National Astronomy and Ionosphere Center, which is operated by Cornell University under cooperative agreement with the National Science Foundation.

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