What do isobars represent on a weather map?

Isobars on a weather map represent lines of equal atmospheric pressure. They are key features in meteorology, as they illustrate the pressure distribution within the atmosphere over a particular area at a given time. When isobars are closely spaced, it indicates a steep pressure gradient, which often correlates with stronger winds. Conversely, widely spaced isobars suggest a gentle pressure gradient and generally lighter winds.

Understanding isobars is essential for interpreting weather systems, such as high and low-pressure areas. A high-pressure system is associated with clearer and more stable weather, while a low-pressure system can lead to cloudier, more unsettled conditions. This knowledge is crucial for pilots and meteorologists when tracking weather patterns and forecasting.