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  1. Troposphere - Wikipedia

    The troposphere is the lowest layer of the atmosphere of Earth. Pronounced / ˈtrɒpəsfɪərˌ - poʊ -/, [1] the name comes from Ancient Greek τρόπος (trópos) 'turning, change' and - sphere. It contains 80% of …

  2. The Troposphere - Center for Science Education

    The troposphere is the lowest layer of Earth's atmosphere. Most of the mass (about 75-80%) of the atmosphere is in the troposphere. Most types of clouds are found in the troposphere, and almost all …

  3. Atmosphere - Weather, Air Pollution, Climate | Britannica

    Dec 17, 2025 · The lowest portion of the atmosphere is the troposphere, a layer where temperature generally decreases with height. This layer contains most of Earth’s clouds and is the location where …

  4. Troposphere Definition - Intro to Climate Science Key Term | Fiveable

    The troposphere is the lowest layer of Earth's atmosphere, extending from the surface up to about 8 to 15 kilometers (5 to 9 miles) high, depending on latitude and weather conditions.

  5. The Troposphere - Windows to the Universe

    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.

  6. Troposphere and Tropopause - Encyclopedia.com

    Troposphere and tropopause The troposphere is the lowest and thickest layer of the atmosphere. In contact with Earth's surface, the troposphere is heated by solar illumination and conduction. The …

  7. Troposphere - CK-12 Foundation

    All of the air you breathe is in the troposphere. All of Earth's weather— wind, rain, and snow—occurs in the troposphere. Most clouds exist in the troposphere as well, though there are rare types of clouds …

  8. Layers of the Atmosphere: From Troposphere to Exosphere

    Sep 8, 2025 · The troposphere is the atmospheric layer closest to Earth’s surface and the one we experience every day. It extends to about 18 kilometers at the equator, though it’s lower at the poles.

  9. Troposphere - Wikiwand

    The troposphere is the lowest layer of the atmosphere of Earth. It contains 80% of the total mass of the planetary atmosphere and 99% of the total mass of water...

  10. Layers of Earth's Atmosphere - Center for Science Education

    The troposphere is the lowest layer of our atmosphere. Starting at ground level, it extends upward to about 10 km (6.2 miles or about 33,000 feet) above sea level. We humans live in the troposphere, …