[PPS06-P02] Venus's Atmospheric Features in UV as Viewed from Ground-Based Observations
Keywords:Venus, Atmosphere, Superrotation, Y-feature, Ground-based observing, Cloud top UV absorber
We characterize the existence of the Y-feature's occurrence and phase speed between 2006 and 2017. It is observed in ultraviolet images captured by the Venus Monitoring Camera on board the ESA Venus Express (VEX) spacecraft which observed Venus's southern hemisphere as well as the Ultraviolet Imager on the Akatsuki spacecraft which viewed pole to pole latitudes. We also extend our analysis to ground-based observations between 2016 and 2019. This includes data captured with the 3.5 m Astrophysical Research Consortium telescope at the Apache Point Observatory (APO) in Sunspot, NM and small 10-inch scale telescopes at Hampton University in Hampton, VA. Images we have captured demonstrate that, even under unfavorable illumination, it is possible to see large features that could be used to supplement gaps in dayside UV data during Akatsuki.
The method for observing and analysis of atmospheric features seen in UV from ground-based observations is discussed. Preliminary Akasuki wind measurements made using a 2D Correlation Image Velocimetry method developed at Hampton University are also presented.
Our work has been supported by NASA MUREP NNX15AQ03A and NASA PATM NNX14AK07G.