Final answer:
A profiler is a system used to measure and analyze the distribution of meteorological elements. It complements radar by providing additional information about atmospheric conditions.
Step-by-step explanation:
A profiler is a system used to measure and analyze the horizontal and vertical distribution of meteorological elements in the atmosphere. It is primarily used in weather forecasting to study variables such as temperature, humidity, and wind speed.
While radar is used for detecting the distance to objects, a profiler complements radar by providing additional information about the distribution of weather variables in the atmosphere. Radar can detect the presence of objects, but a profiler can provide a more detailed picture of the atmospheric conditions.