Physics
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agusmsa11a..04b&link_type=abstract
American Geophysical Union, Spring Meeting 2009, abstract #SA11A-04
Physics
2776 Polar Cap Phenomena, 2788 Magnetic Storms And Substorms (7954), 3319 General Circulation (1223), 3332 Mesospheric Dynamics, 3334 Middle Atmosphere Dynamics (0341, 0342)
Scientific paper
Vertical winds in the upper mesosphere/lower thermosphere are estimated from Doppler shifts of green-line airglow O (1S) emission using a ground based Michelson Interferometer stationed at Resolute Bay (74° N, 95° W). Measured vertical winds are compared to simultaneously measured horizontal winds and synoptic geomagnetic indices in an effort to better understand the vertical motions associated with competing high latitude phenomena; namely the downward motion caused by the polar vortex circulation and the upward motion associated with geomagnetic activity. Specifically, we present vertical winds associated with both geomagnetic quiet-time and active-time periods and discuss the dynamics associated with both situations.
Bhattacharya Yajnavalkya
Gerrard Andrew J.
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