Global and Seasonal Distributions of Mesospheric OH Emissions from SABER

Details Global and Seasonal Distributions of Mesospheric OH Emissions from SABER Global and Seasonal Distributions of Mesospheric OH Emissions from SABER

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsa41a1053b&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SA41A-1053

Physics

3334 Middle Atmosphere Dynamics (0341, 0342), 0300 Atmospheric Composition And Structure, 0310 Airglow And Aurora, 0340 Middle Atmosphere: Composition And Chemistry, 0910 Data Processing

Scientific paper

On December 7, 2001, SABER, a cooled multichannel radiometer, was launched aboard the TIMED satellite. In January of 2002 the SABER instrument began returning airglow limb scan measurements from around the globe. Data now available include 65% of 2002, 75% of 2003, and 40% of 2004. Experimental data were taken from SABER for two radiometric channels centered at λ =1.6 μ m and 2.06 μ m. Volume emission rates (VER) were computed at the peaks of the OH layer profiles and then the magnitudes were displayed as a function of the latitude and longitude of the tangent point of the observation. The Mlynczak unfiltering algorithm for OH emissions was used to obtain absolute values for the maximum VER of the total sequence of OH vibration-rotation band emissions. The maximum VER was found to be greater near the equator compared with high latitudes. In addition, seasonal effects on the global distribution of the nighttime OH airglow were explored for the available data in 2002, 2003, and part of 2004. Algorithmic methods of optimized geographic visualization for this unprecedented wealth of mesospheric airglow data were also explored.

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