LADAR stands for Light Detection and Ranging, and is a real-time tool used by meteorologists to measure the distance between two points. It works by sending out pulses of light and measuring the time it takes for them to return, allowing meteorologists to accurately measure the distance between two points. This technology is especially useful in meteorology because it can be used to measure the distance between two points in the atmosphere, such as the distance between two clouds or the distance between the ground and a cloud.