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A photoelectric instrument for ascertaining cloud heights.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Physical Geography) a device for determining the cloud ceiling, esp by means of a reflected light beam
[C20: from ceiling + -meter]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(siˈlɒm ɪ tər, sɪ-)

an automatic device for measuring and recording the height of clouds by triangulation.
[1940–45; ceil (ing) + -o- + -meter]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


an instrument for measuring by triangulation and recording the distance between the earth and the cloud ceiling.
See also: Clouds
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
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References in periodicals archive ?
Germany's National Meteorological Service (DWD) pursues, among others, operational observations, like a C-band radar network, a ceilometer network, and observatories (e.g., the Richard Assmann Observatory in Lindenberg, east of Berlin).
When the sky is blocked by obscurations like fog, snow, or rain, we simply measure the vertical visibility, beyond which a ceilometer beam is extinguished.
Fellbach, Germany, February 23, 2018 --(PR.com)-- The product innovation Lufft CHM8k complements the ceilometer family of the South German metrology specialist and is suitable for applications in which low-lying measurement ranges in up to eight kilometers are in focus.
In this paper, we use data of a ceilometer CYY-2B to discuss the accuracy of aerosol backscatter profile inversion.
The effects of a tall tower on nocturnal bird migration--a portable ceilometer study.
CloudForms 3.2 adds additional OpenStack workload management capabilities including: automated discovery; web-based console support; service catalog publishing and user dialog generation for OpenStack Orchestration (Heat) templates; deeper image and workload introspection capabilities with OpenStack Image Service (Glance) and OpenStack Compute (Nova) integration; and improved capacity and utilization management through expanded OpenStack Telemetry (Ceilometer) integration.
The CAT II MET equipment includes sensors to measure variables essential to aviation safety wind, pressure, humidity and temperature, visibility, runway visual range (RVR), a rain gauge to measure precipitation levels, and a ceilometer to measure cloud base.
- OpenStack Telemetry (Ceilometer): Improved access to metering data used for automated actions or billing / chargeback purposes.
Alcafuz, "Variability of urban aerosols over Santiago, Chile: comparison of surface [PM.sub.10] concentrations and remote sensing with ceilometer and lidar," Aerosol and Air Quality Research, vol.
The neural network combined with the natural orthogonal functions shows a good capability of exploiting information provided by other instruments, such as a laser ceilometer [31].
Heat, for cloud application orchestration, and Ceilometer, for resource
The time Between transmission and reception determines the height above the ceilometer of any reflecting particles, such as water or ice crystals in clouds.