Computer Science – Sound
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsa21b1539j&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SA21B-1539
Computer Science
Sound
2407 Auroral Ionosphere (2704), 2427 Ionosphere/Atmosphere Interactions (0335), 2437 Ionospheric Dynamics, 2481 Topside Ionosphere, 3369 Thermospheric Dynamics (0358)
Scientific paper
The SCIFER2 sounding rocket was launched into a Poleward Moving Auroral Form (PMAF) event on January 18, 2008. As is typical, the event was characterized by the presence of soft electron precipitation, driving discrete auroral arcs at 630 nm. The rocket payload, which included a UV photometer as well as several other instruments, flew in the vicinity of the dayside cusp and reached an apogee of approximately 1500 km. The photometer was included on the payload in order to explore the possibility that sunlight might scatter from upwelling neutral gases as a result of the electron precipitation (and associated microphysical processes). Near these altitudes, the photometer was pointed approximately perpendicular to local zenith. In this configuration, highly structured UV emissions were measured emanating from sources located several hundred km, perhaps 1000 km or more, above the ground. In this study, we examine rocket and ground data to determine the source of these emissions, including the possibilities that the structures are associated with auroral phenomena, flourescence or, as suggested above, from sunlight scattered from high-altitude (upwelling) neutral gases.
Jaynes A.
Kintner Paul
Lessard Marc R.
Lynch Kennda
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