Mean Sea Level Pressure Highs and Lows Ridges and Troughs Fronts Thickness Temperature Advection Definitions

Thickness Look at these three pictures. They show how the 1000-500mb thickness can fluctuate with air masses of different temperatures. When cold air is in place, the thickness is smaller than when warm air is in place. Therefore, it can be concluded that temperature is related to thickness. Indeed, it is true that thickness lines can be thought of in the same manner as isotherms (lines of constant temperature).