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What is height above sea level?

Answer

Height above sea level is the elevation of land above the local mean sea level. Sea level is used as the base level for measuring depth and elevation on Earth. Temperature, gravity, winds, currents and river discharges affect sea levels.

Local mean sea level is determined by taking hourly measurements of sea levels over a 19-year period and then averaging the measurements. Global warming is melting glaciers and ice sheets, causing an elevation in sea levels, explains National Geographic. Sea level rise may threaten low-lying nations, such as Comoros and Maldives. New York City and Mumbai, which are coastal cities, also must prepare for high sea levels.

Explore this Topic
The easiest way to determine your height above sea level is by downloading Google Earth and loading it on your PC. Type your address into the search bar and the ...
Your elevation or height above sea level is the altitude of your position relative to the average sea level datum. You can get this information online on websites ...
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