Venus mesospheric winds and the carbon monoxide bulge

Details Venus mesospheric winds and the carbon monoxide bulge Venus mesospheric winds and the carbon monoxide bulge

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992lpico.789...39g&link_type=abstract

In Lunar and Planetary Inst., Papers presented to the International Colloquium on Venus p 39-40 (SEE N93-14288 04-91)

Physics

Bulging, Carbon Monoxide, Cloud Height Indicators, Synthetic Apertures, Velocity Distribution, Venus (Planet), Venus Atmosphere, Wind Measurement, Wind Profiles, Wind Velocity, Doppler Effect, Valleys, Weighting Functions

Scientific paper

Recently, our group mapped the CO absorption lines on the disk of Venus in 1988 using the synthetic aperture array at the Owens Valley Radio Observatory. Observations were make in the (0-1) rotational transition of CO at 115 GHz, or a wavelength of 2.6 mm. Systematic variations in the Doppler shifts of the lines (particularly near the limbs) enable the group to directly map the wind field at 100 plus or minus 10 km, the peak altitude for the experimental weighting functions used. These measurements show that the winds are indeed of the order of a 100 m/s at this altitude. Previously, many had assumed that the vertical wind profile would quickly fall to zero above the cloud tops, due to cyclostrophic breakdown. This work is reviewed.

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