enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Cloud base - Wikipedia

    en.wikipedia.org/wiki/Cloud_base

    The height of the cloud base can be measured using a ceilometer. This device reflects a beam of light off the cloud base and then calculates its distance using either triangulation or travel time. Alternatively, the cloud base can be estimated from surface measurements of air temperature and humidity by calculating the lifted condensation level.

  3. Ceilometer - Wikipedia

    en.wikipedia.org/wiki/Ceilometer

    A ceilometer is a device that uses a laser or other light source to determine the height of a cloud ceiling or cloud base. [1] Ceilometers can also be used to measure the aerosol concentration within the atmosphere. [2] A ceilometer that uses laser light is a type of atmospheric lidar (light detection and ranging) instrument. [3] [4]

  4. Ceiling projector - Wikipedia

    en.wikipedia.org/wiki/Ceiling_projector

    The ceiling projector or cloud searchlight is used to measure the height of the base of clouds (called the ceiling) above the ground. It is used in conjunction with an alidade , usually positioned 1000 ft (300 m) away and wherever possible set at the same level.

  5. Automated airport weather station - Wikipedia

    en.wikipedia.org/wiki/Automated_airport_weather...

    The laser is pointed upward, and the time required for reflected light to return to the station allows for the calculation of the height of the cloud base. Because of the limited coverage area (the laser can only detect clouds directly overhead), the system computer calculates a time-averaged cloud cover and ceiling , which is reported to ...

  6. Cloud height - Wikipedia

    en.wikipedia.org/wiki/Cloud_height

    The cloud height, more commonly known as cloud thickness or depth, is the distance between the cloud base and the cloud top. [1] It is traditionally expressed either in metres or as a pressure difference in hectopascal (hPa, equivalent to millibar ).

  7. Cloudbase - Wikipedia

    en.wikipedia.org/wiki/Cloudbase

    The Andersons' original script for the first episode stated that the base is kept airborne by "powerful jet engines that are pointing downwards and are obviously powered by atomic energy". [ 9 ] The Cloudbase filming model was designed by special effects director Derek Meddings and measured over six feet (1.8 m) in length.

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Ceiling balloon - Wikipedia

    en.wikipedia.org/wiki/Ceiling_balloon

    By timing the balloon from release until it enters the cloud a ceiling height can be obtained. When correctly inflated the balloon will rise at rate of 140 m/min (460 ft/min). The bases of clouds are very rarely flat and solid, so the ceiling height is not when the balloon disappears but when the colour begins to fade.