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Diagram showing the face of the "three-pointer" sensitive aircraft altimeter displaying an altitude of 10,180 ft (3,100 m). Reference pressure of about 29.92 inHg (1013 hPa) is showing in the Kollsman window. An altimeter or an altitude meter is an instrument used to measure the altitude of an object above a fixed level. [1]
Land surface elevation extremes by geographic region; Geographic region Highest point Maximum elevation Lowest point Minimum elevation Elevation span ⦁ Eurasia: Mount Everest, [1] China and Nepal: 8848 m 29,029 ft Dead Sea, [2] Israel, Jordan, and Palestine: −428 m −1,404 ft: 9,276 m 30,433 ft ⦁ Asia Mount Everest, [1] China and Nepal ...
The greater the altitude, the lower the pressure. When a barometer is supplied with a nonlinear calibration so as to indicate altitude, the instrument is a type of altimeter called a pressure altimeter or barometric altimeter. A pressure altimeter is the altimeter found in most aircraft, and skydivers use wrist-mounted versions for similar ...
Jason-3 is a satellite altimeter created by a partnership of the European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT) and National Aeronautic and Space Administration (), and is an international cooperative mission in which National Oceanic and Atmospheric Administration (NOAA) is partnering with the Centre National d'Études Spatiales (CNES, French space agency).
Aviation altitude is measured using either mean sea level (MSL) or local ground level (above ground level, or AGL) as the reference datum. Pressure altitude divided by 100 feet (30 m) is the flight level , and is used above the transition altitude (18,000 feet (5,500 m) in the US, but may be as low as 3,000 feet (910 m) in other jurisdictions).
South China Sea: sea level 2954 m 9,692 ft Pitcairn Islands: Pawala Valley Ridge: 347 m 1,138 ft South Pacific Ocean: sea level 347 m 1,138 ft Poland: Rysy: 2499 m 8,199 ft Raczki Elbląskie [15] −2 m −6 ft: 2501 m 8,205 ft Portugal: Montanha do Pico on Pico Island [ak] 2351 m 7,713 ft North Atlantic Ocean: sea level 2351 m 7,713 ft Puerto Rico
The NASA Earth Global Reference Atmospheric Model (Earth-GRAM) was developed by the Marshall Space Flight Center to provide a design reference atmosphere that, unlike the standard atmospheres, allows for geographical variability, a wide range of altitudes (surface to orbital altitudes), and different months and times of day. It can also ...
In aviation, atmospheric sciences and broadcasting, a height above ground level (AGL [1] or HAGL) is a height measured with respect to the underlying ground surface.This is as opposed to height above mean sea level (AMSL or HAMSL), height above ellipsoid (HAE, as reported by a GPS receiver), or height above average terrain (AAT or HAAT, in broadcast engineering).