Le site de vulgarisation scientifique de l’Université de Liège. ULg, Université de Liège
troposphere

The troposphere is the lowest layer in the Earth’s atmosphere, where most of the meteorological phenomena form. It represents 80% of the total mass of the Earth’s atmosphere. Its thickness varies according to the latitude and the seasons. Hence, the average thickness is 17 km above mid-latitude regions, more than 20 km in the tropics, and barely 7 km in the poles during winter.

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