The boundary layer is the lowest part of the atmosphere, extending from the Earth's surface to a height of about 1-2 kilometers.

The boundary layer is characterized by turbulence, vertical mixing, and wind shear, but it is typically not stably stratified.

Turbulence is the primary mechanism for the transfer of heat, moisture, and momentum between the Earth's surface and the atmosphere.

Wind shear is the term used to describe the vertical profile of wind speed in the boundary layer.

Surface heating, wind speed, and air temperature are all factors that influence the stability of the boundary layer, but cloud cover is not.

Sensible heat flux is the term used to describe the process by which heat is transferred from the Earth's surface to the atmosphere through conduction.

Latent heat flux is the term used to describe the process by which heat is transferred from the Earth's surface to the atmosphere through the evaporation of water.

Stable, unstable, and neutral are the three types of boundary layer stability. Turbulent is not a type of stability.

Friction velocity is the term used to describe the height at which the wind speed in the boundary layer reaches its maximum value.

Temperature, humidity, and wind speed are all types of micrometeorological measurements, but precipitation is not.

Radiation is the term used to describe the process by which heat is transferred from the Earth's surface to the atmosphere through radiation.

Vegetation, buildings, and water bodies are all factors that influence the roughness length of the Earth's surface, but soil type is not.

Zero-plane displacement is the term used to describe the height at which the wind speed in the boundary layer is zero.

Laminar, turbulent, and convective are the three types of boundary layer flow. Mixed is not a type of boundary layer flow.

Advection is the term used to describe the process by which heat is transferred from the Earth's surface to the atmosphere through advection.