The following Earth style (https://earth.nullschool.net/) Create an animation of the flow of.
If you plot the original flow as a vector (quiver)
The original program is https://github.com/rougier/windmap Get it from Cartopy (https://scitools.org.uk/cartopy/docs/latest/) I made it possible to drop it on the map with (In addition, in the original program, the movement of the animation was opposite to the expectation, so I reversed the sign etc.). I put the Jupyter Notebook of the Python code I made on github. https://github.com/tmiyama/windmap
The heart of the animation is color, without which it would be a streamline. By changing the color from white to black, it looks like a dotted line, and by shifting it little by little, the animation is made to flow.
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