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Parameter Tree:
EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD CEILING
Definition:
The height ascribed to the lowest layer of clouds or obscurring phenomena
when it is reported as broken (5/8 to 7/8 coverage), overcast, or obscuration
and not classified "thin" or "partial".  Expressed in above ground level (AGL)
heights. See also the definitions for cloud height and cloud base.
Reference:
Glickman, T.S., ed. 2000 Glossary of Meteorology, 2nd ed., American
Meteorological Society, Boston, MA
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