Altimetry

Altimetry is the measurement of altitude, or how high something is above a reference point, typically sea level. It is commonly used in various fields, such as aviation, meteorology, and oceanography. In aviation, altimeters help pilots know their altitude to ensure safe flight. In satellite altimetry, satellites measure the distance between themselves and the Earth's surface using radar or lasers, providing data about sea level changes, land topography, and ice thickness. This information is essential for understanding climate change, weather patterns, and mapping the Earth's features accurately.