When Isobars Are Close Together It Means. The term “isobars” refers to lines on a map that connect points of equal barometric pressure. There is very little change in pressure over distance and this results in winds that are light (5 knots or less) and variable.
Therefore, when isobars are close together, it means that many atmospheric pressures exist within a small area. When a difference in atmospheric pressure exists, air moves from the higher to the lower pressure area, resulting in winds of various speeds. Isobars on a chart don’t cause wind.
Close spacing of isobars signifies a steep pressure gradient or in other words think in terms of variation in pressure,the pressure is changing so pronouncedly say every x millibars/ kilometer,then x+100 milibars another km, so on and so forth….the pressure is changing so enormou. The stronger the pressure gradient force, the. Isobars are lines on a weather map joining together places of equal atmospheric pressure.
It is pressure differences that set the air in motion. If the lowest number is in the middle circle, this is a low pressure or depression. On the map the isobar marked 1004 represents an area of high pressure, while the isobar marked 976.
Therefore, when isobars are close together, it means that many atmospheric pressures exist within a small area. What kind of wind is present when isobars are close together? When isobars become very tightly grouped together it indicates a tight pressure gradient (steep slope).
The term “isobars” refers to lines on a map that connect points of equal barometric pressure. The closer the isobars are together, the windier it is. Isobars are elements with different chemical properties but the same physical properties.
When two isobars are closer together then the pressure changes at a greater rate over distance. What happens to the atmospheric pressure when the isobars are close together? When two isobars are closer together then the pressure changes at a greater rate over distance.
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