Cloud base - Definition

Related Words: Afterdamp, Army, Black, Blanket

The Cloud base is the lowest portion of a cloud.

A ceilometer is used to measure the height of the cloud base.

Knowing the height of the cloud base is important in aviation as aircraft require a minimum safe altitude on landing approach to see the runway lights. If the cloud base descends below the minimum safe altitude then an airport may need to be closed for safety reasons.

External links

National Science Digital Library - Cloud Base (http://www.nsdl.arm.gov/Library/glossary.shtml#cloud_base)
Measuring Cloud Heights (http://avc.comm.nsdlib.org/cgi-bin/wiki_grade_interface.pl?Measuring_Cloud_Heights) : A lesson plan from the National Science Digital Library.

See also Cloudbase for the HQ of Captain Scarlet, TV series.

Example Usage of Cloud
	WeHeartDemiL: theres a stranger on the hill and he is speaking, as the tears from every Cloud began to fall.
	gav_stone: OK so MS buy Opalis to boost their Cloud offering - Great idea ......
	rutlandweather: local readings on Saturday at 17:00 GMT: white Cloud. -4°C (25°F)

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Cloud base - Definition

External links

Example Usage of Cloud