Physics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsa31a..01r&link_type=abstract
American Geophysical Union, Fall Meeting 2006, abstract #SA31A-01
Physics
3332 Mesospheric Dynamics, 3360 Remote Sensing, 3389 Tides And Planetary Waves
Scientific paper
The HF radars of the Super Dual Auroral Radar Network (SuperDARN) detect a category of backscatter that is due to meteor trails in the mesosphere. The motion of the neutral atmosphere can be inferred and applied to the study of atmospheric tides and planetary waves. The current configurations of longitudinal radar chains in the northern and southern hemispheres have accumulated mesospheric wind measurements continuously since the last solar cycle maximum while the archives of some of the radars span more than a solar cycle. We have analyzed the occurrence of tides and planetary wave activity in the SuperDARN data over long periods and found possible connections to the quasi-biennial oscillation (QBO) and to sudden stratospheric warmings (SSWs). We present examples of intensified planetary wave activity that occurred during SSWs. Additionally, we examine the variability in tidal and planetary wave activity over the past solar cycle and correlations with lower atmospheric phenomena.
Ruohoniemi J.
Talaat Elsayed R.
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