Physics
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3506103c&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 6, CiteID L06103
Physics
5
Planetary Sciences: Solar System Objects: Meteors, Radio Science: Ionospheric Physics (1240, 2400), Atmospheric Composition And Structure: Planetary Atmospheres (5210, 5405, 5704)
Scientific paper
UV radiances from the Global Ozone Monitoring Experiment (GOME) spectrometer on the ERS-2 satellite are used to determine long-term dayside temporal variations of the total vertical column density below 795 km of the meteoric metal species Mg and Mg+ in the upper atmosphere. The GOME instrument has the ability to observe the ground state transition lines of Mg I at 285.2 nm and resolve the Mg II at 280 nm. A retrieval algorithm has been developed to determine column densities and applied to the years 1996-1997. Results show the middle latitude dayside Mg+ peaks in total vertical content during the summer, while neutral Mg demonstrates a much more subtle maximum in summer. Dayside trends are opposite previous midlatitude nighttime lidar observations, with the exception of calcium. The Mg+/Mg ratio has a seasonal variation, reaching a maximum in the summer. The total content of Mg+ is twice that of neutral Mg.
Aikin Arthur C.
Burrows John P.
Correira J.
Grebowsky Joseph M.
Pesnell William Dean
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