The product is in longitude 0-360. The Velocity Field is well managed :  The particles has to be defined in 0-360, but they're not correctly plotted by the `pset.show()` method. 
The product is in longitude 0-360. The Velocity Field is well managed :
The particles has to be defined in 0-360, but they're not correctly plotted by the
pset.show()method.