The troposphere is the lowest layer of Earth's atmosphere, and is also where nearly all weather conditions take place. It contains approximately 75% of the atmosphere's mass and 99% of the total mass of water vapor and aerosols. read more
The troposphere is characterized by the density of its air and the change in temperature with altitude. As a rule, in regards to the troposphere, temperature and pressure decrease as altitude increases. Density is the mass found in a volume of gas, liquid, or solid. read more
The troposphere is the lowest layer of Earth's atmosphere. The troposphere starts at Earth's surface and goes up to a height of 7 to 20 km (4 to 12 miles, or 23,000 to 65,000 feet) above sea level. Most of the mass (about 75-80%) of the atmosphere is in the troposphere. read more