Physics
Scientific paper
Dec 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....8810189k&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 88, Dec. 1, 1983, p. 10189-10209.
Physics
19
Atmospheric Circulation, Constraints, Data Acquisition, Mars Atmosphere, Wind Direction, Wind Measurement, Annual Variations, Dust, Lee Waves, Polar Caps, Temperature Effects
Scientific paper
The present investigation is concerned with the results of a study of wind direction indicators contained in the Viking and Mariner 9 data sets. It is found that wind direction measurements from a variety of indicators, taken over several Mars years at many longitudes, exhibit a high degree of consistency and seasonal reproducibility. It is, therefore, possible to interpret most of the observations in terms of the zonally symmetric circulation of Mars. When combined with models of the atmospheric circulation, observed wind directions can be used to set loose constraints on the polar cap mass fluxes and thermal fields which drive the flows. It is pointed out that polar cap formation seems to control the wind directions at mid and high latitudes in both hemispheres during autumn and early winter.
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