What are the causes of environmental turbulence?

Environmental turbulence is caused by changes in the air currents. These air currents can be changed as a result of the weather, air planes, and other external factors. What is called clear-air-turbulance is often the result of the jet stream and located at high altitudes. Wind shear, mountain wave, wake turbulence, thermal induced turbulence, and thunderstorms are additional examples of environmental turbulence.