Blandningslagret

Blandningslagret, or "mixing layer" in English, refers to the lowest part of the Earth's atmosphere where temperature and humidity are relatively uniform due to turbulent mixing. This turbulent mixing is primarily driven by solar heating of the Earth's surface, which causes air parcels to rise and mix with cooler, drier air above. Wind also plays a significant role in this process.

The depth of the blandningslagret can vary greatly depending on factors such as the time of day, season, and geographical location. During the day, with strong solar radiation, the blandningslagret can extend several kilometers into the atmosphere. At night, or when the surface is cooler than the air above (a condition known as temperature inversion), the mixing is suppressed, and the blandningslagret becomes much shallower or may even disappear.

This layer is crucial for the vertical transport of heat, moisture, and pollutants. Many atmospheric phenomena, such as the formation of clouds and precipitation, and the dispersion of aerosols and gases, are directly influenced by the processes within the blandningslagret. Understanding its characteristics is therefore important for meteorology, air quality studies, and climate modeling.