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

2. Wind Velocities from Our Data

3. Wind Velocities from Our Data

4. Periodicity in East-West Winds?

5. Akatsuki 10 µm Images

6. 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!

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

8. 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