Cloud base

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


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


In the News

Protein Stops P53 In Its Tracks In Cancer Cells
Overexpression of a protein known as HMGA1 has been associated with many types of cancer in humans. Previous studies have shown that HMGA1 decreases the ability of p53 to inhibit cell death by a process known as apoptosis; inhibition of p53-mediated apoptosis causes tumors to develop in both animals and humans. However, precisely how HMGA1 mediates its pro-tumorigenic effects on p53 have not been clearly established.

ePaper
The development of new energy-efficient and high-resolution full-colour displays for portable computing and communications applications, even flexible electronic paper, will rely on finding novel organic molecules that produce colour when a voltage is applied

Eye Condition, If Left Untreated In Children, May Result In Permanent
When a child is farsighted or has astigmatism or has both conditions in both eyes, bilateral amblyopia may develop. In contrast to single-eye amblyopia or "lazy eye,"bilateral amblyopia affects both eyes and is less common. In a new article, researchers report that this condition can be successfully treated with corrective lenses, particularly when diagnosed and treated early. Left untreated, bilateral amblyopia may result in permanent visual disability.

Computers To Be Used To Find Blueprint For New Influenza Drug
Researchers at the University of Bath have won a £261,000 grant to use the latest software to produce a blueprint of a designer drug that could stop influenza and some other diseases from replicating in humans.

[Funny] A referee has sent himself off in an English amateur league ma
Andy Wain had to abandon the Sunday league match between Peterborough North End and a Royal Mail side in the 63rd minute after throwing down his whistle and marching up to confront North End's keeper.

Melting Ice Displaces Walruses In The Russian Arctic
Some 40,000 walruses have appeared on the Russian Arctic coast, a phenomenon that scientists believe is a result of global warming melting Arctic sea ice. According to WWF, this is the largest walrus haul out -- areas where walruses rest when they are out of the water -- registered in the Russian Arctic.

Warning: This TV Set Is Obsolete
Proposed labeling would alert consumers about televisions that can't receive digital signals. In Gadget Lab.

Blu-ray and HD DVD
If you’ve been worrying that either one of the high-definition video technologies - Blu-Ray or HD DVD could become the next Betamax, then worry no further. It seems that Korean company LG Electronics has come to the rescue with a dual format system that will cope with both.It seems like an obvious idea - combine [...]

New Species Of Peccary -- Pig-like Animal -- Discovered In Amazon Regi
Biologists have discovered a new species of peccary, a member of the pig family, in the basin of the Rio Aripuanãin the south-eastern Amazon region. The divergence time from the already known peccary species (the time which has passed since the evolutionary division) has been set at one to 1.2 million years.

Academy Award Winners
Contains "history and commentary on the Academy Awards from its early beginnings [1927] to the present."Features posters for the Best Picture winner of each year, lists of the most nominated people, best speeches, how to watch movies critically, and more.


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