Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Vientos, Turbulencia y Ondas en las Nubes de Venus   This PhD thesis consists on a study of the atmospheric dynamics of the planet
Venus with data from two space missions separated in time: the Galileo mission
and Venus Express. Concretely, images obtained with different wavelengths have
been used to study the motions of the clouds at different vertical levels of
the atmosphere, enabling to track the global atmospheric dynamics of the
planet. In this thesis simultaneous measurements of the 3-dimensional structure
of the winds are presented for the first time, finding and analyzing different
sources of temporal variability such as the thermal waves produced by the solar
insolation, global oscillations of the wind speeds and variability for periods
covering from months to years. Furthermore, a study of the spatial scales of
the Venusian clouds and the atmospheric turbulence have been undertaken.
Frequent periodic patterns can be also seen on the lower clouds of Venus in
high spatial resolution images from the instrument VIRTIS onboard Venus
Express. These correspond to a type of atmospheric waves called gravity waves,
and their characteristics and role in te atmospheric dynamics of Venus are
analyzed at the end of the thesis.

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The categories of this paper are: math-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: nlin
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The categories of this paper are: q-alg
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-lat
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The categories of this paper are: adap-org
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-fin
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The categories of this paper are: econ
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The categories of this paper are: ao-sci