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Name: Tyler 
Status: student
Grade: 6-8
Country: USA
Date: Spring 2012


Question:
At approximately what elevation does the coldest temperature occur in the atmosphere?


Replies:
The atmospheric temperature, humidity, pressure and other parameters change with the specific altitude etc. However, an average called the U.S. Standard Atmosphere (1976) is an average of a large number of measurements. This is used so that even though there are changes, atmospheric scientists can at least use a common “atmosphere”. Although computing this average is pretty complicated, it provides a common baseline for calculating various atmospheric parameters. You can find tabulations and graphs in various references – for example, AIP Physics Desk Reference, or on any number of web sites – Search the term “U.S. standard atmosphere 1976”. While it varies from actual data, it provides a common baseline for various computations.

Vince Calder


Tyler, br>
The coldest temperature occurs at the top of the Mesosphere, at 80 to 95 kilometers height.

David R. Cook Meteorologist Climate Research Section Environmental Science Division Argonne National Laboratory


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