Physics
Scientific paper
Sep 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997angeo..15.1221f&link_type=abstract
Annales Geophysicae, vol. 15, Issue 9, pp.1221-1231
Physics
14
Scientific paper
The WINDII interferometer placed on board the Upper Atmosphere Research Satellite measures temperature and wind from the O(1S) green-line emission in the Earth's mesosphere and lower thermosphere. It is a remote-sensing instrument providing the horizontal wind components. In this study, the vertical winds are derived using the continuity equation. Mean wind annually averaged at equinoxes and solstices is shown. Ascendance and subsidence to the order of 1-2 cm s-1 present a seasonal occurrence at the equator and tropics. Zonal Coriolis acceleration and adiabatic heating and cooling rate associated to the mean meridional and vertical circulations are evaluated. The line emission rate measured together with the horizontal wind shows structures in altitude and latitude correlated with the meridional and vertical wind patterns. The effect of wind advection is discussed.
Fauliot Vincent
Thuillier Gerard
Vial François
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