Turbulence and Mixing at the Equatorial Mesopause: Results From a Rocket/Radar Experiment

Details Turbulence and Mixing at the Equatorial Mesopause: Results From a Rocket/Radar Experiment Turbulence and Mixing at the Equatorial Mesopause: Results From a Rocket/Radar Experiment

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsa53a1149l&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SA53A-1149

Computer Science

Sound

2415 Equatorial Ionosphere, 2437 Ionospheric Dynamics, 3332 Mesospheric Dynamics, 3369 Thermospheric Dynamics (0358), 3379 Turbulence (4490)

Scientific paper

We report measurements of neutral temperature and plasma density obtained by sounding rocket on 20 September 2004 over Kwajalein Atoll and common volume measurements of electron density performed during that day with incoherent scatter radar. We observed a deep layer mixed by turbulence between 92 and 103 km, and further indications of mixing between 105 and 110 km. The lower region is interpreted as a case of a mesospheric inversion layer generated by gravity wave-tidal interaction, and leading to strong localized heating and cooling. Such layers seem to be a common feature at low and latitudes based on satellite temperature data. Electron densities deviate from model profiles and are linked to the neutral atmosphere, presumably by mixing and transport of minor species. The region above 105 km exhibits low ridges and valleys in daytime electron densities that slowly descend throughout the day and are likely to be connected to neutral motion.

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