The troposphere is the first and lowest layer of the atmosphere of the Earth, and contains 75% of the total mass of the planetary atmosphere, 99% of the total mass of water vapour and aerosols, and is where most weather phenomena occur.

What does troposphere literally mean?

Use the noun troposphere when you're talking about the part of the atmosphere that's closest to the surface of the Earth. ... The word troposphere comes from the Greek root tropos, "a turn or change."

What does the name troposphere mean?

Closest to the surface of Earth, we have the troposphere. “Tropos” means change. This layer gets its name from the weather that is constantly changing and mixing up the gases in this part of our atmosphere. ... In fact, the troposphere contains three-quarters of the mass of the entire atmosphere.