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单词 precipitable water
释义
precipitable water

Geology and Earth Sciences
  • The quantity of rainfall that would result from condensation and precipitation of the total moisture in a column of air in the atmosphere. Most atmospheric moisture is contained in the lower atmosphere, below about 5500 m. On average, an atmospheric column of 1 m2 cross-section contains vapour equivalent to 5–25 mm depth of rainfall. The average residence time of moisture in the atmosphere is about nine days.


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