Chapter13a - Weather Forecasting - I Review of Chapter 12...

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Weather Forecasting - I
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Review of Chapter 12 The polar front model (Norwegian model) of a developing mid-latitude cyclonic storm represents a simplified but useful model of how an ideal storm progresses through the stages of birth, maturity and dissipation. Cyclogenesis, lee-side lows, northeasters, bombs. For a surface mid-latitude cyclonic storm to form, there must be an area of upper-level divergence above the surface low . For the surface storm to intensify, this region of upper level divergence must be greater than surface convergence.
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Another way of looking at it.
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Review of Chapter 12 When the polar-front jet stream develops into a looping wave, it provides an area of upper-level divergence for the development of surface mid- latitude cyclonic storms.
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Review of Chapter 12 The curving nature of the polar-front jet stream tends to direct surface mid-latitude cyclonic storms northeastward and surface anticyclones southeastward . Skip the sections: Conveyor belt model of mid-latitude cyclones. A developing mid-latitude cyclone: the March storm of 1993. Vorticity, divergence, and developing mid-latitude cyclones. Earth vorticity, relative vorticity and absolute vorticity. Putting it all together: a monstrous snowstorm. Polar lows.
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Importance of forecasting: air-travel
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Importance of forecasting
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Importance of forecasting
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Acquisition of Weather Information Surface measurements (surface weather stations) Land (more than 10,000 stations) Ocean (ships, buoys, drifting automatic stations) Upper air data : radiosondes, aircraft, satellites
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Collection and Exchange of Weather Information The World Meteorological Organization (WMO) – UN agency, 175 nations, standardization and exchange of data. World Meteorological Centers
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This note was uploaded on 05/29/2011 for the course MET 1010 taught by Professor Matchev during the Spring '08 term at University of Florida.

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Chapter13a - Weather Forecasting - I Review of Chapter 12...

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