Which weather phenomenon involves an increase in temperature with altitude?

An inversion is a weather phenomenon characterized by a temperature increase with altitude, which is contrary to the normal temperature decrease that typically occurs as one ascends in the atmosphere. This situation can lead to stable atmospheric conditions where the air is stratified, often trapping pollutants and creating smog in urban areas. Inversions are significant in aviation because they can affect aircraft performance and visibility, particularly in areas where fog or low cloud cover occurs beneath inversions.

On the other hand, advection refers to the horizontal transfer of heat or moisture in the atmosphere, convection involves the vertical transfer of heat through rising warm air, and radiation pertains to the transfer of energy through electromagnetic waves. These processes do not inherently describe a temperature increase with altitude, making them distinct from the concept of an inversion. Understanding inversions is important for pilots and weather observers, as they can influence local weather conditions and air quality.