Encyclopedia

laser ceilometer

laser ceilometer

[′lā·zər sē′läm·əd·ər]
(engineering)
A ceilometer in which the time taken by a light pulse from a ground laser to travel straight up to a cloud ceiling and be reflected to a receiving photomultiplier is measured and converted into a cathode-ray display that indicates cloud-base height.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive
We see that the SNR can be improved by accumulating the original signal of the laser ceilometer. The SNR of the original signal is gradually less than 10 (this value is the minimum requirement for the SNR that can be used to retrieve aerosolbackscatter coefficients [4,17]) at 1.5 km, but the available height of it can reach 3-4 km after accumulating for 30 min.
Then, the extinction coefficient deduced from the surface meteorological visibility was compared with the near-surface extinction coefficient of the CYY-2B, CL51 laser ceilometer, and the MPL.
Soderholm, "Laser ceilometer measurements of Australian dust storm highlight need for reassessment of atmospheric dust plume loads," Geophysical Research Letters, vol.
Accuracy Analysis of the Aerosol Backscatter Coefficient Profiles Derived from the CYY-2B Ceilometer
• Cloud Base Measurement System includes laser ceilometer located close to the DVOR site for precision approach runway direction.
Unique System FZE Aids in Completion of the Automatic Weather Observation System Project on an International Airport in the UAE
The new laser ceilometers seem to know how much haze a human eye can penetrate and they look up until they reach that point and report the distance.
A scud-running rating: hood time can't prepare you for the low-level maneuvering in low visibility that's part of the IFR diet. Welcome to the real world
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