Venus Winds Meeting Research Goals for 2017

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Presentation transcript:

Venus Winds Meeting Research Goals for 2017 Mark A. Bullock DMNS 1-17-17

Wind Velocities from Our Data

Wind Velocities from Our Data

Periodicity in East-West Winds?

Akatsuki 10 µm Images

Relationship to East-West Winds The bow-like feature is fixed relative to Venus’ mountains. It is a mountain, or gravity wave. The Feature persists even though it is immersed in 50 m/s winds!

Available Data Plus 2015 Sep 25, Sep 27, Sep 28, Sep 29 And upcoming 18 nights in March andApril 2017

What We Are Going To Do Calculate east-west wind velocities as a function of latitude for as many contiguous nights as we can. Where observing runs are separated by only 2 months, extrapolate results to look for 7-10 day periodicity This will involve: Select images Clean up images (remove slit, defects) Co-register images Subtract scattered sunlight (Br-gamma images) Transform to cylindrical coordinates Measure motion of 9 x,y points per image Calculate east-west winds as a function of latitude Make Science on a Sphere movies