You are watching: Isobars are lines on a weather map representing what
Isobars and isotherms room lines ~ above weather maps which stand for patterns of pressure and also temperature, respectively. They show how temperature and also pressure are changing over room and so assist describe the large-scale weather patterns throughout a an ar in the map.
Why do I care? Isobars and also isotherms do it easier to read and also analyze weather maps. By looking at fads of temperature and also pressure, you can determine weather problems in the next few days ahead.
I should currently be acquainted with:Temperature,PressureWhat is an isotherm?
Isotherms room lines of continuous or equal temperature. They are regularly used top top weather maps by meteorologists to offer a big scale check out of temperatures throughout the U.S. If you have ever looked at a weather map in a newspaper, the isotherms are supplied to division the color-filled temperatures. Because that example, in the map below, temperature in the 60"s may be stood for by a yellow color, while temperature in the 70"s may be represented by one orange color. The line the divides the yellow indigenous the orange is the isotherm. All of the locations in between the 60 level isotherm and also the 70 degree isotherm will have actually a temperature in between 60 and 70 degrees.
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Isobars are lines of consistent or equal press on a weather map. They deserve to be provided to find locations of short or high pressure over a wide area (like the U.S.), and they have the right to tell us just how intense the system might be. ~ above weather maps, friend may have noticed locations that have a huge “L” or “H” over a an ar with present circling approximately them. The “L” means low push (where we would expect to uncover the shortest pressure) and “H” represents high push (where we would suppose to find the highest pressure). The currently circling them space isobars. Normally the lowest pressure is where precipitation is most most likely to fall, and high pressures space usually connected with clear and also sunny conditions. Wherein the isobars room close together, windy conditions may be expected. Elongated locations of low pressure on surface and upper wait weather maps are dubbed "troughs" and also elongated locations of high pressure are called "ridges."
Isotherms and also isobars allow us come view huge scale procedures much much more easily than looking at the life data from individual weather station itself. Because that example, number C is temperature data across the U.S. Figure D is of the same data, but this time, colors and isotherms have actually been added. Simply by glancing, it is much easier to view where the warmest and also coldest temperatures will certainly be across the U.S., and also it provides you one idea that what to expect in certain regions.