altimetry data

Altimetry data refers to measurements that determine the height of an object relative to a reference point, typically sea level. This data is collected using instruments, often on satellites, that measure the time it takes for a radar signal to bounce back from the Earth's surface. By analyzing this information, scientists can monitor changes in ocean levels, land topography, and even ice thickness in polar regions. This understanding is crucial for studying climate change, natural disasters, and urban planning, as it helps visualize how our planet's surface is changing over time.