ATOC 184 Lecture8_Feb01_2012

ATOC 184 Lecture8_Feb01_2012 - Chapter 3:Weather maps...

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Chapter 3:Weather maps
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Weather maps (why?) Surface maps tell us what is happening Other maps (other levels in the atmosphere) tell us a lot about why is occurring
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of a constant pressure surface that is horizontal versus one that is sloped
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Heights (a) Pressure (b)
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The upper-air station model
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The 850-mb analysis for 1200 UTC, December 5, 2001
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The 300-mb height and wind analysis for 1200 UTC, 5 December 2001
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http://mag.ncep.noaa.gov/NCOMAGWEB/appcontroll er
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More recent surface and upper-air maps http://severewx.atmos.uiuc.edu/current_weather.htm :
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More recent surface and upper-air maps http://severewx.atmos.uiuc.edu/current_weather.htm :
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Atmospheric cross sections (radar reflectivity and winds in the vicinity of Hurricane Alicia in 1983)
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Weather forecasting and computer models
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Computer model simulation of a ‘supercell thunderstorm’
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The forecasting process
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An example of a ‘grid’ that is used in numerical weather prediction models. Calculations are performed at each grid point.
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Recent NWP coverage of the North American continent. Each grid point is spaced about 12 km apart in the enclosed region
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Two representations of terrain in eastern North America
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Lawrence River Valley:
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