Nodules on CT scan (3 replies): I had a CT scan ran twice on my lungs. It shows multipl... [more]. Ground glass opacities. Hi, Just got the CT scan result back. A 7mmx4mm gro... [more]. Continue discussion. This discussion is closed.
Isobars are lines of constant or equal pressure on a weather map. They can be used to find areas of low or high pressure over a broad area (like the U.S.), and they can tell us how intense the system may be.
The weather map is a quintessential weather tool. Much like how equations are the language of mathematics, weather maps are meant to convey a lot of weather information quickly and without using a lot of words. The easiest way to achieve this is by using weather symbols, so that anyone looking at a map can decipher the same exact information from it... that is, if you know how to read it!