Pressure altitude is an aircraft's height above a theoretical "standard datum plane," defined by specific atmospheric conditions (29.92 inHg pressure, 15°C at sea level). It is a critical metric for ...

Maps generally indicate elevation in meters above sea level. But sea level is not the same everywhere. A group of experts has developed an International Height Reference System (IHRS) that will unify ...

MSL (Mean Sea Level) is a globally standardized, calculated average sea level used by pilots as a crucial, consistent reference point (often called true altitude) for navigation and flight planning.

The website veloroutes.org/elevation has a map of the world where you can find the elevation of any address. Just type in the full address that you want to look up ...

MIKE MOSS SAYS: Khalid, I'm not sure I entirely follow the question as written, but an aircraft sitting on the ground at an airport with field elevation 2000 feet above mean sea level will have a ...

A new method for quantifying grandeur is reshuffling the pecking order of the planet’s most impressive peaks. Turns out Everest has steep competition. Mount Everest, left, tops out at 29,032 feet ...

“The snow level has gone from the surface along the Oregon and southwest Washington Coastline to 1000 feet each morning,” Storm Tracker 2 Meteorologist Rhonda Shelby said. The higher up you go into ...