Vis5D Weather

[IMG] Vis5D Weather
Weather.

Brief Instructions

After a few seconds to load the data files, this will bring up a panel of buttons and a blank visualization window:

  • Click on the TOPO button to bring up the map display:

    (Korea is the penninsula next to Japan -- the part that looks like Florida :-)

  • Click the left mouse on the CLOUDICE button under Isosurf. to visualize clouds (white blobs):
  • Click on ANIMATE (upper-left of the button panel) to show the cloud movement pattern.
  • Click the left button on RELVOR under the Isosurface column to visualize vorticity. (In order to find this button, you might need to enlarge the window or use the scrollbar.) By default, you will visualize temperature at isosurfaces of constant vorticity.
  • Click on TEMPC in the fifth column of buttons. The button panel will now look something like this:

    Things you can play with:

    1. One way to show velocity fields is track the trajectory of a column of particles before and after a specified time. The default demo_korea script will enable this by default. Another way to show velocity fields is to click on the wind buttons, e.g. HWIND1
    2. The display can be scaled and rotated using the mouse buttons. It can be reset to fixed positions by clicking on TOP, SOUTH, WEST, etc.
    3. Velocity streams can be turned of by clicking on Trajectory and clicking on SET 1 to deselect the set of streams.

    Other Information

    Vis5D, from the University of Wisconson, is an interactive visualization system enabling full exploration of "5-D" gridded weather and climate data sets. One can make isosurfaces, contour line slices, colored slices, volume renderings, etc. of data in a 3-D grid then rotate and animate the image in real time. There's also a feature for wind/trajectory tracing, a way to make text anotations for publications, etc. Silicon Graphics has enhanced versions to allow the user to walk through a data set or to view two independent data sets together.

    Data in this demo is from NCAR [blah blah ] MM5 [blah blah ] mesoscale weather forecasting model of Korea.

    The Pennsylvania State University/ National Center for Atmospheric Research mesoscale model, MM5, is a limited-area, hydrostatic or nonhydrostatic, sigma-coordinate model designed to simulate or predict mesoscale and regional-scale atmospheric circulation. It has been developed at Penn State and NCAR as a community mesoscale model and is continuously being improved by contributions from users at several universities and government laboratories.

    System Requirements

    Reality graphics.

    HighEnd_Demos@sgi.com