The arm is mounted onto a curved scale that is marked both in meters and the coded cloud height (feet).
An example of the estimation of cloud top height from temperature measurements is available from this paper.
Cloud top pressure can also be used as an indicator of cloud top height.
This variability in distance depends on a number of factors, including cloud height and density.
The wind speed and direction, and the cloud height and type were major hurdles to be overcome each hour.
The ceilometer sensor determines cloud height and discrete cloud layers.
Other terms such as vorticity, vertical motion, cloud heights have entered in use later, in the 20th century.
The area had bad weather with a low cloud height, resulting in difficult searching conditions.
Meteorological colour states are determined by the relevant worst condition from the visibility and significant cloud height.
"Oh, we'll not attempt any cloud heights for a day or two," went on Mr. Sharp.