: Astronomie: geopotential height

physical parameter > potential energy > geopotential height

geopotential height

Geopotential height or geopotential altitude is a vertical coordinate referenced to Earth's mean sea level, an adjustment to geometric height (altitude above mean sea level) that accounts for the variation of gravity with latitude and altitude. Thus, it can be considered a "gravity-adjusted height". It is the altitude all aircraft's barometric altimeters are calibrated to. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Geopotential_height)

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