Source: wikibot/height-above-mean-sea-level
= Height above mean sea level
{wiki=Height_above_mean_sea_level}
Height above mean sea level (often abbreviated as AMSL, or simply MSL) is a measurement of elevation or altitude that indicates how high a point is relative to the average sea level of the Earth's oceans. This average sea level is calculated over a long period and takes into account variations in tides, atmospheric pressure, and other factors.