What do isobars on a surface analysis map represent?

Isobars on a surface analysis map represent constant pressure lines, which are critical for understanding wind patterns and potential. By connecting points of equal atmospheric pressure, isobars indicate areas of high and low pressure on the map. This configuration is essential for predicting wind direction and speed; winds generally flow from areas of high pressure to areas of low pressure.

When isobars are closely spaced, it indicates a steep pressure gradient, leading to stronger winds. Conversely, widely spaced isobars suggest a gentler pressure gradient, resulting in lighter winds. This understanding is fundamental for pilots, especially in sport flying, as wind can significantly affect flight performance and safety. The other options do not accurately reflect what isobars represent on a surface analysis map.