met1031 - pressure is measured in the atmosphere by...

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Meteorology 08/04/2008 01:09:00 Isobar : a line that connects points of equal pressure Pressure gradient force : force that causes motion from high pressure to low pressure  [creates wind] when isobars [at a given interval] are far apart, wind is not very strong.  when  isobars at the same interval are close together, this is an indicator of higher  pressure gradient and, consequently, higher wind. vertical cross-section of atmosphere height 985 990  995  1000mb surface^ [blue waves are isobars; red arrows are moving air] pressure heights will be higher in high pressure[ridge], and lower in low  pressure[trough].
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Unformatted text preview: pressure is measured in the atmosphere by measuring the height of a fixed pressure value. in high pressure systems, pressure is always highest at the center. pressure is lowest at the center in low pressure systems. [3-dimensional] due to the coriolis force, wind from a high pressure system will blow parallel to the isobars [clockwise in the NH, because of deflection to the right]. winds from low pressure system blow counterclockwise. high pressure circulation is congruous with the general circulation 08/04/2008 01:09:00 08/04/2008 01:09:00...
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This note was uploaded on 04/07/2008 for the course ATM 100 taught by Professor Tsonis during the Fall '06 term at Wisconsin Milwaukee.

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met1031 - pressure is measured in the atmosphere by...

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