What does an isobar represent on a weather map?

Study for the ATPL Canadian Meteorology, Radio Aids to Navigation, and Flight Planning (SAMRA) exam. Use multiple-choice questions with explanations. Prepare effectively for your upcoming test!

An isobar on a weather map represents a line of constant pressure. Isobars are used to depict areas of equal atmospheric pressure, which helps meteorologists identify weather patterns and systems. When isobars are closely spaced, it indicates a steep pressure gradient, often leading to strong winds. On the other hand, when they are spaced farther apart, it suggests a more gradual pressure change and typically lighter winds. Understanding isobars is crucial for analyzing weather systems, as they help to indicate high and low-pressure areas that influence weather conditions, such as storms or clear skies. This knowledge assists in accurate weather forecasting and flight planning.

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