Ground wind data

[HingedEmu]

Hello,
Im considering the use of your API to get wind date.
I will appriciate help with some specifications regarding your API:

1. What is the maximum resolution of your ground wind data? (what is the distance between any 2 datapoints)
   2.Does your ground wind data takes into account the affects of topography on wind speed?
   3.Does your ground wind data is on a worldwide coverage?
   3.Do you have any accuracy tests that you can refer me to, regrading your ground wind data?

Thanks