In a commercial airliner taking you from San Francisco to New York at 12,000 m (39,400 ft), what percentage of atmospheric pressure is below your plane? What percentage of atmospheric pressure resides above your flight altitude?

Using the graph you prepared in Figure 10.2, list the approximate answers to the following, assuming standard atmosphere conditions. The first answer is provided for you in brackets.


81%, 19%

Environmental & Atmospheric Sciences

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