Volume and Temperature. Higher temperature increases pressure and decreases density. Lower temperature decreases pressure and increases density. (Except with water, in which case ice is less dense...
True, that's what we are told by meteorologists. Density in turn is a function of temperature. Hot air is lighter / less dense than cold air. Anticyclones / high pressure areas are made of cold air,...
When air is warmer, the particles in the air expand and cause the air's volume to increase. Because density is the mass of the air divided by the volume of the air, and since the mass remained the...