ceiling classification

云幕分类

Atmospheric Sciences (English-Chinese) dictionary. 2014.

Look at other dictionaries:

  • measured ceiling — A ceiling classification applied when the cloud ceiling value has been determined by instruments or known heights of unobscured portions of objects other than landmarks …   Aviation dictionary

  • indefinite ceiling — As it pertains to meteorology, the ceiling classification denoting a poorly defined boundary between clouds and clear air where vertical visibility into surface based obscuration ends …   Aviation dictionary

  • estimated ceiling — A cloud ceiling that has been estimated by the observer. The term also applies if the ceiling has been determined by some other method, but because of limits of time, distance, and precipitation, a better descriptive classification cannot be… …   Aviation dictionary

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