Physics
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agusmsa43b..06c&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SA43B-06
Physics
6245 Meteors, 0305 Aerosols And Particles (0345, 4801, 4906), 0310 Airglow And Aurora, 2400 Ionosphere (6929)
Scientific paper
High temporal resolution vertical column contents of the most dominant meteoric metal species, Mg+, Mg, Fe+, Fe, and Si have been measured pole-to-pole using the nadir-viewing Global Ozone Measuring Experiment (GOME) UV/VIS spectrometer on the ERS-2 satellite. The ERS-2 satellite is in a sun synchronous orbit, crossing the equator at about noon local time. Using archival data from the GOME instrument, ionized Mg has been shown to be about five times more abundant than neutral Mg, while the column densities of atomic and singly ionized Fe were nearly the same, with ionized Fe tending to be slightly higher. Spatial analysis of the metal species demonstrated higher neutral and ion concentrations in the summer hemispheres. This work will be the first presentation of spatial and temporal variations of multiple atmospheric metal species over the span of a year. Attention will be given to the time periods surrounding major meteor streams to focus on their impact on metal column densities. Previous works focusing on the Leonids and Persieds showers found variations in column contents, but their correlation to the shower is ambiguous. Furthermore, the metal retrieval algorithm has been improved and will be discussed.
Aikin Arthur C.
Burrows John P.
Correira J.
Grebowsky Joseph M.
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