Final answer:
Wind is faster high up in the troposphere due to pressure differences and the rotation of the Earth.
Step-by-step explanation:
Wind is faster high up in the troposphere than it is near the ground due to a couple of factors. One factor is the pressure difference between regions of high and low pressure in the atmosphere. When the barometric pressure is high in an area, air will move to a region of lower pressure, creating winds. The greater the pressure difference, the stronger the winds will be. Another factor is the rotation of the Earth, which causes wind patterns to be distorted. By observing cloud patterns on planets, scientists can measure wind speeds and track atmospheric circulation.