Why are planetary winds curved?

It's complicated, but essentially it is because the surface is not homogenous and so it doesn't heat evenly. So, not all the air convects in the same direction as the Earth spins and heats different parts. read more

If you take the curl of velocity of any planetary wind (say trade wind, which has a component out of the plane this screen) with the rotation vector of the Earth, which points upwards (according to Right hand rule and Earth spinning from left to right) you will get the correct direction of deflection of each of the planetary wind. read more

Wind envelopes the Earth and is of importance to everyone. The winds that encircle the entire planet is called global winds. There are a lot of names for global winds but the most popular names are the prevailing westerlies, polar easterlies, trade winds, and equator winds. read more