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Send in the Clouds


Image(s): 640*480

Jpeg Image (46 Ko) Jpeg Image (41 Ko)
Jpeg Image (30 Ko)



  • Northrop Grumman Data

Project : Data Systems Division Technology Department

Video(s) and extracted images: 320*240

Video QuickTime -> Film/Video (3.6 Mo)
Jpeg Images -> (12 Ko)

Video QuickTime -> Film/Video (3.6 Mo)
Jpeg Images -> (10 Ko)

Video QuickTime -> Film/Video (3.9 Mo)
Jpeg Images -> (11 Ko)


Cumulous cloud development is simulated using fractal ellipsoids to model the clouds. The ellipsoids are positioned and scaled by a heuristic dynamic model based on the "parcel" theory, which describes cloud development in terms of air bubbles heated by external sources such as radiated terrain heat. As a bubble of air is heated, it expands and rises into the cooler atmosphere above until it reaches an altitude where moistures condenses to form a cloud. The condensation releases heat within the bubble and the process continues to a point of equilibrium.

Technical Information

This simulation was performed using proprietary software written in Fortran running on a Silicon Graphics Personal IRIS 4D/25G workstation.

More Information...

  • Bibliography :

    Dr.Geoffrey Y.Gardner has been a Senior Staff Scientist at Northtrop Grumman Data Systems Division since 1986. He has been working in the field of Computer Graphics since 1976.

  • Some internal links :

    (oo) Same Author
    (ooo)Forest Fire Simulation
    (oo) Same Institute
    (ooo)Forest Fire Simulation
  • Some more Comments :

    information from an email message sent by G.Y.Gardner

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