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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
    Troposphere A picture of Earth's troposphere with its different cloud types of low to high altitudes casting shadows Sunlight is reflected off the ocean, after it was filtered into a reddish light by passing through much of the troposphere at sunset
  • 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
  • Layers of the Atmosphere - National Oceanic and Atmospheric Administration
    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
  • Troposphere | Weather, Climate Change Air Pollution | Britannica
    Troposphere, lowest region of the atmosphere, bounded by the Earth beneath and the stratosphere above, with its upper boundary being the tropopause, about 10–18 km (6–11 miles) above the Earth’s surface
  • 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 - an overview | ScienceDirect Topics
    The troposphere is defined as the region of the atmosphere closest to Earth, extending from the surface up to about 10 km in altitude, where almost all weather occurs and temperatures decrease with altitude This layer is characterized by significant air movements due to convection, as warm air rises and cools How useful is this definition?
  • 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 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
  • 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
  • Layers of Earths 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, and nearly all weather occurs in this lowest layer





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