lämpötilapainon

Lämpötilapaino refers to a concept in meteorology and climatology that describes the influence of temperature on atmospheric pressure. It is not a direct measurement but rather an understanding of how changes in temperature affect the density of air parcels and consequently their weight within a column of the atmosphere. When air is heated, it expands and becomes less dense. Conversely, when air cools, it contracts and becomes more dense.

This variation in density directly impacts the pressure exerted at the Earth's surface. A column of warm, less dense air will exert less pressure than an equally tall column of cold, denser air. Therefore, areas of high temperature are often associated with lower surface pressure, and areas of low temperature tend to have higher surface pressure, assuming other factors are equal. This phenomenon is a fundamental driver of atmospheric circulation, as pressure differences create winds. For instance, the development of thermal lows over continents in summer is a direct consequence of temperature weight. Understanding lämpötilapaino is crucial for interpreting weather maps and forecasting.