Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...93...96s&link_type=abstract
Icarus (ISSN 0019-1035), vol. 93, Sept. 1991, p. 96-121.
Astronomy and Astrophysics
Astronomy
23
Carbon Monoxide, Doppler Effect, Mesosphere, Microwave Spectra, Rotational Spectra, Venus Atmosphere, Wind Measurement, Carbon 12, Millimeter Waves, Radio Astronomy, Zonal Flow (Meteorology)
Scientific paper
Venus observations conducted in 1988 at the first rotational transition of (C-12)O finely sampled this absorption line by means of a 32-channel filter bank; with this spatial and spectral resolution, it proved possible to measure Doppler shifts of the absorption line across the planet due to strong winds in Venus' upper mesosphere. The Doppler shifts change in a way that is indicative of westward horizontal winds. The radial wind speeds from the Doppler shifts were smoothed to reduce noise and then fitted in least-squares fashion to canonical forms of the lower atmosphere's westward zonal flow. The two flows exhibit a high correlation in orientation.
Berge Glenn L.
Muhleman Duane O.
Shah Kathryn P.
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