Terme de Glossaire

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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