Multi-instrument validation of inferred F-region electron densities from O+ recombination emissions

Details Multi-instrument validation of inferred F-region electron densities from O+ recombination emissions Multi-instrument validation of inferred F-region electron densities from O+ recombination emissions

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sa62a09k&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #SA62A-09

Other

2443 Midlatitude Ionosphere, 2494 Instruments And Techniques, 6982 Tomography And Imaging

Scientific paper

Radiative recombination of O+ in the ionosphere produces prominent optically thin UV emissions such as 911Å~and 1356Å~ that offer the means to obtain global scale F-region electron densities from space-based spectroscopic measurements. Since O+ is the main constituent in the F region, the volume production rate is proportional to the electron density squared, and thus intensity measurements are approximately proportional to the square of the electron density integrated along the line of sight. A series of such observations from a limb scanning platform can thus enable tomographic inversion of the intensity measurements to produce altitude profiles and latitude gradients of ionospheric electron densities. Space-borne spectroscopic measurements obtained from the NRL HIRAAS experiment on-board the ARGOS satellite provide the means to investigate the remote sensing approach in comparison with other experimental methods and ionospheric models. We validate the technique and investigate the associated issues in the context of incoherent scatter radar observations, a theoretical model, and other ground-based radio and optical experiments.

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