Poster
D. C. Espadinha, P. Machado
Abstract
General circulation models for planetary atmospheres are a standout amongst the most significant bases and tools of atmosphere dynamics in planetary sciences. Such models are regularly the result of the analysis of great amounts of observations so they can be sufficiently accurate to properly describe and portray circulation on our target planets. There is additionally the possibility of application of these models to other celestial bodies outside of our solar system. Fundamental to this understanding of planetary atmospheres, the cloud-tracking is without doubt a key component. This method makes use of image sequences of the atmosphere of a certain planet to infer and quantify wind characteristics simply by analysing the features shown in these sets of images and knowing the moment they were gathered. One of these characteristics that can be measure is, for example, wind velocity. This method yields significant results that can be crucial for better understanding the cloud circulation on Venus and, consequently, one of its most fascinating and entrancing characteristics: the superrotation of its atmosphere. This work objectives include using Akatsuki’s Ultraviolet Imager (UVI) data to study wind dynamics and velocities on Venus in ultraviolet filters (283nm in this case). Several wind velocity profiles are retrieved using a cutting-edge method of manual cloud tracking in addition to a specifically designed software so that the variability of the winds can be analyzed both spatially and temporally at this cloud level.
XXIX Encontro Nacional de Estudantes de Astronomia
Lisboa, Portugal
2019 September
