### Possible Answer

The mean sea level pressure (MSLP) is the atmospheric pressure at sea level or (when measured at a given elevation on land) the station pressure adjusted to sea level assuming that the temperature falls at a lapse rate of 6.5 K per km in the fictive layer of air between the station and sea level. - read more

Atmospheric pressure at sea level is the result of the force of gravity on the matter above sea level ... or 14.696 psi (pounds per square inch). This means that, at sea level, the weight of air pressing on every square inch of something is almost 15 pounds. Something to think about: ... - read more

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