Planetary Boundary Layer

What will I learn in this module?

This module presents the basic concepts of the planetary boundary layer (PBL). In addition to definitions and structural considerations, the units include a discussion of some of the important factors in PBL science (including the energy budget, moisture, and diurnal variations) and some of the processes (such as pollutant removal, wet and dry deposition, and chemical reactions).

What are the learning objectives for this module?

Upon completion of this module, you will be able to do the following:

  1. define and describe the PBL, including the surface layer, the mixed layer, the stable layer, and the residual layer
  2. be able to define and calculate the mixing height of the PBL
  3. be able to define and calculate the Monin-Obukhov length
  4. be able to describe some of the influencing factors in PBL science:
    • energy budget
    • moisture
    • diurnal variations
    • buoyancy
    • shear
    • aerodynamic roughness length
  5. be able to describe some of the fundamental PBL processes:
    • weather processes
    • pollutant removal processes
    • wet and dry deposition
    • chemical reactions in the PBL
    • evapotranspiration

Do I need to do this module?

Answer these five questions to test your knowledge the material in this module. A score of four out of five or better indicates you have sufficient mastery of the information in this module!

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