above sea level
Higher than oceans
Above sea level describes elevation measured from the ocean's surface at mean tide, the standard reference point for altitude.
Heights of mountains, cities, and aircraft are typically given as feet or meters above sea level: Denver sits 5,280 feet above sea level.
The phrase often appears in abbreviated form: The summit reaches 14,000 ft ASL.
- altitudeMeasured height above reference
- high altitudeGreat distance upward
- elevationHeight above reference point
- elevation gainTotal altitude increase traveled
- heightVertical extent upward
vertical feet · summit · death zone · base camp · peak · mountain · mountain air · highland · upland · plateau · high ground · climb · ascent · rising · lofty · towering · bird's eye view · airspace
- altitudehigh altitude, low altitude, cruising altitude, elevation gain, ceiling
- elevation zonesalpine zone, altitudinal zonation, death zone, alpine tundra, high altitude
- measurementsheight, stature, meters, depth, pound
environmental domain
above sea levelunderwater
Below the surface
undersea · subterranean · underground · submarine · subaquatic