Displays of Level II isosurfaces are controlled by the Isosurface controls. WSR-88D Level II Radar data has three moments or data types: Reflectivity, Radial Velocity, and Spectrum Width, indicated by the icon in the Field Selector. WSR-88D Dual Pole radar includes these three moments, as well as DifferentialReflectivity, CorrelationCoefficient, and Differential Phase. In order for Radar Isosurface to be listed as a valid Display Type in the Field Selector, either Reflectivity, RadialVelocity, or SpectrumWidth must be chosen, not one of their individual elevation angles.

Image 1: Radar Isosurface Controls Properties Dialog

• Color Table - Shows the active color table and the associated high and low data values in the units of the display. As the mouse pointer is moved over the color bar, the value at a particular color is shown. Right click on the color bar or click on the button that displays the name of the Color Table to make modifications to the color bar. This allows you to open the Color Table Editor, change the range, select other color tables, etc.
• Isosurface Value - Sets the isosurface value. You can do this by clicking on the button or entering a value in the field and pressing Return.

Many of the menu items seen utilizing this display are standard options that can be found in the Menus section of the Layer Controls Page. However, there is one option that is unique to this display.

The View menu has this unique option:

• Use Radar Projection - Re-centers the display and resets the zoom level back to the display's initial settings without changing any other preferences you have modified.