WW2010
University of Illinois

WW2010
 
  welcome
 
> online guides
 
  archives
 
  educational cd-rom
 
  current weather
 
  about ww2010
 
  index

Online Guides
 
  introduction
 
> meteorology
 
  remote sensing
 
  reading maps
 
  projects, activities

Meteorology
 
  introduction
 
  air masses, fronts
 
  clouds, precipitation
 
  el nino
 
  forces, winds
 
  hurricanes
 
> hydrologic cycle
 
  light, optics
 
  midlatitude cyclones
 
  severe storms
 
  weather forecasting

Hydrologic Cycle
 
  introduction
 
  water budget
 
  evaporation
 
  condensation
 
> transport
 
  precipitation
 
  groundwater
 
  transpiration
 
  runoff
 
  summary

transport
 
  introduction
 
> satellite images

User Interface
 
  graphics
> text

NOTE: We've guessed that you're not using a client that supports colored tables and have tried to compensate. Low graphics mode looks much better on clients that do... we recommend switching to Netscape 3.0 or Microsoft Internet Explorer.
.
Satellite Images
detecting the presence of water vapor

Clouds are not the only indication of moisture in the atmosphere. In the visible satellite image below, there was considerable cloudiness associated with stormy activity over the the Eastern United States (circled in blue), while clear skies dominated the Southern Plains (circled in red).

[Image: Visible Image (55K)]

Now compare this image to the water vapor image for the same time. Bright white areas indicate higher amounts of moisture while darker areas indicate lesser amounts. The pronounced white areas in the water vapor image correlate almost exactly with the clouds circled above (in blue). However, the water vapor image indicates relatively high concentrations of moisture across the Southern Plains, while this same region appears cloud-free in the visible image. This is an example of water being transported through the atmosphere in its vapor form.

[Image: Water Vapor Image (40K)]

The area in the Southern Plains is not as bright as the area of clouds located in the Eastern U.S. because the clouds contain more water. Also observe that there is no black on this image, signifying the presence of at least small amounts of water vapor everywhere!



introduction
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.

Hydrologic Cycle