Mean zonal acceleration and heating of the 70- to 100-km region

Details Mean zonal acceleration and heating of the 70- to 100-km region Mean zonal acceleration and heating of the 70- to 100-km region

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....96.1225m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Feb. 1, 1991, p. 1225-1238.

Mathematics

Logic

33

Atmospheric Heating, Mesopause, Radar Data, Wind Measurement, Zonal Flow (Meteorology), Boundary Conditions, Density Distribution, Heat Flux, Temperature Distribution

Scientific paper

This paper uses an empirical model of Eulerian meridional motions, based on monthly climatological winds from existing data base of radar wind measurements on global circulation in the 70- to 110-km region, to derive the net vertical motions in this atmospheric region. Mean heat-flux divergencies and momentum flux divergencies were estimated assuming empirical prescriptions of the mean density and temperature fields. It is shown that these divergencies exhibit very specific characteristics in the height-vs-latitude domain for winter, summer, and equinox conditions in the Southern and Northern Hemispheres. The possible origins of these heat and acceleration sources are examined using a numerical circulation model.

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