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troposphere    
n. 对流层

对流层

troposphere
n 1: the lowest atmospheric layer; from 4 to 11 miles high
(depending on latitude)


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  • 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 the total mass of the planetary atmosphere and 99% of the total mass of water vapor and aerosols, and is where most weather phenomena occur [2]
  • Layers of the Atmosphere - National Oceanic and Atmospheric Administration
    Troposphere Known as the lower atmosphere, almost all weather occurs in this region The troposphere begins at the Earth's surface, but the height of the troposphere varies It is 11-12 miles (18-20 km) high at the equator, 5½ miles (9 km) at 50°N and 50°S, and just under four miles (6 km) high at the poles
  • 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 weather occurs within this layer
  • Atmosphere - Weather, Air Pollution, Climate | Britannica
    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 weather primarily occurs
  • Troposphere | NASA Space Place – NASA Science for Kids
    What is the troposphere? The troposphere is the innermost layer of Earth’s atmosphere 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
  • TROPOSPHERE Definition Meaning - Merriam-Webster
    The meaning of TROPOSPHERE is the lowest densest part of the earth's atmosphere in which most weather changes occur and temperature generally decreases rapidly with altitude and which extends from the earth's surface to the bottom of the stratosphere at about 7 miles (11 kilometers) high
  • Troposphere - What It Is, Characteristics, Importance, and Climate . . .
    The troposphere is the lowest layer of Earth's atmosphere and is also the most important layer of the atmosphere for life on Earth It contains the air we breathe and the water vapor that forms clouds and precipitation
  • Troposphere, Extent, Characteristics,Variation, Significance
    Troposphere is the lowest atmospheric layer where weather forms, holding most air and water vapour, regulating climate, temperature and sustaining life
  • What Is the Troposphere? - Earth How
    The troposphere is the lowest layer of the atmosphere It starts at ground level and extends upwards to about 13 km All weather occurs in the troposphere
  • Troposphere - ScienceDaily
    It is the densest layer of the atmosphere and contains approximately 75 percent of the mass of the atmosphere and almost all the water vapor and aerosol The troposphere extends from the Earth's





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