WW2010
University of Illinois

WW2010
 
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Online Guides
 
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Reading Maps
 
  introduction
 
  utc conversions
 
  temp conversions
 
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  surface maps
 
  upper air obs
 
> upper air maps

Upper Air Maps
 
  300 hghts, temps
 
  300 hghts, winds
 
  500 hghts, temps
 
  500 hghts, winds
 
> 700 hghts, temps
 
  700 hghts, moisture
 
  850 hghts, temps
 
  850 hghts, moisture

User Interface
 
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700 mb Heights and Temps
upper air data

[Image: (53K)]
latest image

This panel shows the 700 mb field for geopotential height, and temperature. 700 mb charts depict conditions in the middle troposphere (roughly 3000 meters). This is also referred to as the steering level, since most weather systems are "steered" by the winds at this level.

Geopotential height approximates the actual height of a pressure surface above mean sea-level and is represented by the solid white contours. The geopotential height field is given in meters with an interval of 30 meters between height lines. The locations of surface cyclones and anticyclones hold similar positions in the 700 mb geopotential height field.

Temperature is represented by contour lines which are labeled. Temperatures are given in degrees Celsius with an interval of 5 degrees Celsius between temperature contours, also called isotherms.



500 hghts, winds
Terms for using data resources. CD-ROM available.
Credits and Acknowledgments for WW2010.
Department of Atmospheric Sciences (DAS) at
the University of Illinois at Urbana-Champaign.

700 hghts, moisture