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Wind is caused by air flowing from high pressure to low pressure. Since the Earth is rotating, however, the air does not flow directly from high to low pressure, but it is deflected to the right (in the Northern Hemisphere; to the left in the Southern Hemisphere), so that the wind flows mostly around the high and low pressure areas.This effect of the wind "feeling the Earth turn underneath it" is important for very large and long-lived pressure systems. For small, short-lived systems (such as in the cold outflow of a thunderstorm) the wind will flow directly from high pressure to low pressure.The closer the high and low pressure areas are together, the stronger the "pressure gradient", and the stronger the winds. On weather maps, lines of constant pressure are drawn (as in the example, above) which are called "isobars". These isobars are usually labeled with their pressure value in millibars (mb). The closer these lines are together, the stronger the wind.Clouds do not form winds.The curvature of the isobars is also important to the wind speed. Given the same pressure gradient (isobar spacing), if the isobars are curved anticyclonically (around the high pressure in the above example) the wind will be stronger. If the isobars are curved cyclonically (around the low pressure in the example above) the wind will be weaker.Near the surface of the Earth, friction from the ground slows the wind down. During the day, when convective mixing is stirring up the lower atmosphere, this effect is minimized. At night, however, when convective mixing has stopped, the surface wind can slow considerably, or even stop altogether.Wind can be thought of one way that the atmosphere moves excess heat around. Directly or indirectly, wind forms for the promary purpose of helping to transport excess heat either away from the surface of the Earth, where sunlight causes an excess of energy buildup, or from warm regions (usually the tropics) to cooler regions (usually the higher latitudes).Extratropical cyclones accomplish much of this heat transport outside of the tropics, while in the tropics the trade winds, monsoons, and hurricanes transport much of the heat.
They're called 'isobars'.
what is the similaraties between isobars and isotherms ]
Isobars show different pressure areas on a weather map.
Yea, where would you generally see isobars??
Isobars are lines of equal pressure, isotherms are lines of equal temperature. And isobars are pretty and gorgeous, and isotherms are thermometers.
Isobars on a map represent areas on the map of similar atmospheric pressure.
Isobars 7N14, 6C14 2He3, 1H3 92U239, 93Np239
A map with isobars is a front map.
the spacing of isobars is the correct answer
Yes they do. Scientists make maps with isobars on them.
Isobars measure the air pressure in the sky and our atmosphere! I hope I helped a little!
High winds. The closer the isobars - the higher the wind speed will be.
High pressure: The isobars will be far apart. Low pressure: The isobars will be very close together.