Here you can find teaching material that I have written for various courses and activities. > [!example]- **[[Introduction to the atmospheric boundary layer]]** > Learning goals: > 1. Understand what is the atmospheric boundary layer. > 2. Understand why turbulence is important. > 3. Understand why the atmospheric boundary layer is turbulent. > [!example]- **[[Reynolds decomposition]]** > Learning goals: > 1. What is Reynolds decomposition? > 2. What is the difference between the ensemble average, spatial average, and time average? > 3. Under which conditions can we use time or/and space averages? > 4. What is ergodicity?