Thermal internal boundary layer

thermal internal boundary layer

An internal boundary layer caused by advection of air across a discontinuity in surface temperature.

Important in coastal plains, this layer increases in depth to merge eventually with the convective boundary layer some distance from the coastline. In this example of cool air advection, the thermal internal boundary layer grows in depth as the square root of distance from the discontinuity.

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1. The layer of fluid near a boundary that is affected by friction against that boundary surface, and possibly by transport of heat and other variables across that surface.

The process of transport of an atmospheric property solely by the mass motion (velocity field) of the atmosphere; also, the rate of change of the value of the advected property at a given point.