How are isobars typically measured?

Isobars are lines on a weather map that connect points of equal atmospheric pressure. The correct unit of measurement for isobars is hectopascals (hPa), which is a standard unit used in meteorology. One hectopascal is equal to 100 pascals, and this metric unit provides a more precise measure of atmospheric pressure than some other units.

While inches of mercury is also a unit used for measuring atmospheric pressure, it is not the preferred metric standard in modern meteorological practices. The use of Celsius and Fahrenheit pertains to temperature measurements rather than pressure, making them unsuitable for describing isobar conditions. Hectopascals offer a clear and standardized method for comparing pressure conditions across different locations, making them essential in weather forecasting and analysis.