Mean sea level. When we say 5000' MSL we mean 5000 feet above sea level. I know the abbreviation doesn't make any sense in the way we use it, but that's its colloquial use anyway.
Mean Sea Level (datum for altitude measurement)
mean sea level. A tidal datum. The arithmetic mean of hourly heights observed over the National Tidal Datum Epoch. Shorter series are specified in the name; e.g., monthly mean sea level and yearly mean sea level.
Mean Sea Level. It is necessary to convert the pressure readings to equivalent mean sea level pressures, otherwise the horizontal changes in pressure would be overwhelmed by vertical variations simply due to differences in altitude between observing stations. In this way, a Mean Sea Level Pressure map will then show pressures affected by changing weather conditions, not because of changing altitude.
ean ea evel; altitude above sea level as opposed to AGL.
Above mean sea level North
Mean Sea Level. Altitude (express in feet in the US ) as indicated by an altimeter which is activated by barometric pressure and referenced to sea level as zero altitude. All aircraft operations below 18000 feet normally fly using MSL altitudes.
Mean Sea Level. The average height of the surface of the sea from which elevations are referenced.
Mean Sea Level (really height above geoid).
abbreviation for Mean Sea Level. Height above sea level.
Moisture Sensitivity Level
Mean Sea Level - altitude above the ocean
Altitude expressed as feet above sea level, rather than above local terrain (AGL). To ignore varying terrain elevations, all navigational altitudes and barometric altimeters are based on height above mean sea level. Only radar altimeters, which measure the distance between the aircraft and the ground at low altitudes, indicate actual height above the ground.
Mean sea level. A point of reference to measure lake elevation. It refers to the elevation of the ocean halfway between high and low tide. Lake elevations are measured in feet above mean sea level.
Mean Sea Level. The average height of the world's oceans.
Mean sea level. The value obtained at a site by averaging hourly tide heights observed over a long period of time (preferably 18.6 years). It is also the average water level that would exist in the absence of tides.
Mean sea level. A level midway between mean high and mean low tides in an open sea.
Mean sea level. The average elevation of the sea over a 19 year period.
Above Mean Sea Level - if you need this it usually means you've gone drastically wrong somewhere.
mean sea level. The average height of the surface of the sea for all stages of tide.
Mean sea level. Used by pilots when defining altitude, MSL refers to feet above sea level as opposed to above the ground. Pilots always use MSL when referring to altitude.