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Old 16th Feb 2009, 15:42
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Greg2041
 
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Met Questions

Hi, whilst studying the groundschool notes for my PPL I came across the following:

Cold Air causes pressure to fall more rapidly with height whilst warm air causes pressure to fall more slowly with height.

Similarly:

Warm air holds more water vapour than cold air at the same pressure.

I am looking at the science behind these statements and would appreciate a simplistic explanation as none is offered in any of the textbooks.

Many thanks

Greg
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