Atomic Hydrogen in the Mesopause Region Derived From the SABER Instrument

Details Atomic Hydrogen in the Mesopause Region Derived From the SABER Instrument Atomic Hydrogen in the Mesopause Region Derived From the SABER Instrument

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsa33a..02m&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SA33A-02

Computer Science

Sound

0310 Airglow And Aurora, 0317 Chemical Kinetic And Photochemical Properties, 0340 Middle Atmosphere: Composition And Chemistry

Scientific paper

The Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument simultaneously measures temperature, density, ozone, and emission from the high-lying states of the hydroxyl (OH) radical. Near the mesopause the excited OH states are produced directly from the reaction of atomic hydrogen and ozone. Measurements of emission from these states can be used to derive the density of atomic hydrogen in the airglow layer of this region. SABER is now providing measurements of atomic hydrogen continuously, night and day. In this paper we review the derivation of the atomic hydrogen from SABER measurements and compare results with photochemical model calculations. The uncertainty of the H abundance due to the non-LTE rate coefficients used in the analysis of the OH airglow is also assessed.

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