Metres abuin sea level

(Reguidit frae Abuin sea level)

Metres abuin mean sea level (MAMSL) or simply metres abuin sea level (MASL or m a.s.l.) is a staundart metric meisurment in metres o the elevation or altitude o a location in reference tae a historic mean sea level. Mean sea levels are affectit bi climate chynge an ither factors an chynge ower time. For this an ither reasons, recordit meisurments o elevation abuin sea level micht differ frae the actual elevation o a gien location ower sea level at a gien moment.