A new source of auroral infrared emission observed by TIMED/SABER

Details A new source of auroral infrared emission observed by TIMED/SABER A new source of auroral infrared emission observed by TIMED/SABER

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3517106m&link_type=abstract

Geophysical Research Letters, Volume 35, Issue 17, CiteID L17106

Physics

2

Ionosphere: Auroral Ionosphere (2704), Ionosphere: Ion Chemistry And Composition (0335), Ionosphere: Ionosphere/Atmosphere Interactions (0335), Ionosphere: Instruments And Techniques, Atmospheric Processes: Remote Sensing

Scientific paper

We demonstrate for the first time that O2 + + NO charge transfer produces NO+(v). This mechanism identifies a new source of auroral infrared emission at 4.3 μm, which provides a major step forward in understanding auroral processes and a new context for understanding previously observed auroral enhancements in O2(b 1Σ g +) and O2(a 1Δ g ) bands. The charge transfer process is identified by comparing physics-based model simulations with NO+(v) volume emission rates derived from SABER 4.3 μm limb emission measurements.

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