Isobar Map

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This map is an example of an isobar map. It works to show us pressure differences in our atmosphere. This type of map is highly useful in that it helps us to predict the weather that may be coming. For instance, if we see a low pressure system coming, we could predict that we may have rain coming. This is because low pressure systems move air up which can lead to cloud formation and precipitation. On an isobar map, the lines that we see work to connect all areas of equal pressure. Lines that are closer to each other represent a rapid change in pressure, while lines that are further away represent a gradual pressure change. In this map, we see a low pressure system moving in the northern part of the country and up into Canada. Since gases move from areas of high pressure to those of low pressure, we can explain why the isobars are very close together around the low pressure zone. All the air from the high pressure zone to the south east is rushing into this system. The air will then be rushed upwards where clouds will form. This rapid change in pressure around the low pressure area will definitely bring some interesting weather since the air is moving so quickly. These types of maps are known to be used most by weather men and meteorologists to help them predict the weather we may experience.