Machine-translated by Google. Questions are authored in English.
Top

Discussion

Which quantity does precipitable water measure?

  • A.The depth of liquid if all vapour in a column condensed
  • B.The amount of rainfall that will actually reach the ground from the cloud currently present above the site
  • C.The relative humidity
  • D.The mass of water vapour contained within a single cubic metre of air at the level being considered here

Answer: A

Precipitable water is the vertically integrated water vapour expressed as an equivalent depth of liquid, typically 10 to 25 millimetres in mid-latitudes and up to 60 in the deep tropics. It is an upper bound on what could fall from a column but a poor predictor of actual rainfall, since convergence continually resupplies moisture into a precipitating system. Values well above the seasonal normal are one of the standard indicators used when assessing the potential for extreme rainfall.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.