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Unidata IDV Workshop for version 6.3 > Accessing and Displaying Data

3.5 WSR-88D Level II Data Displays
The IDV reads WSR-88D Level II data files. Each file has data for one complete volume scan of the atmosphere, including sweeps at several elevations. The IDV displays the data as sweeps and RHIs, in 2D and 3D, and as 3D isosurfaces. The IDV can be used for a general purpose Level II data viewer, and can also combine Level II data displays with other meteorological data, in 2D plots and in 3D displays in the upper atmosphere.

3.5.0  Loading WSR-88D Level II Radar Data

Level II data is accessed in the IDV from the remote THREDDS Data Server, each file having data from one WSR-88D radar for all sweeps (tilt) for one time.

3.5.1  Level II Sweep Displays in 2D and 3D

Sweep displays simulate conventional PPI radar plots of a single sweep of a map view, and also plot sweeps in the upper atmosphere,

3.5.2  Level II RHI Displays

The IDV makes a pseudo-RHI display from Level II data. The display is presented in a conventional 2D plot, and in a 3D display at the correct position in the atmosphere.

3.5.3  Level II CrossSection Displays

The IDV makes a vertical Cross Section display from Level II radar volume data. The display is presented in a conventional 2D plot, and in a 3D display at the correct position in the atmosphere.

3.5.4  Level II Volume Scan Display

This IDV display shows all sweeps and individual bins in a WSR-88D volume scan, at their true positions in the atmosphere.

3.5.5  Level II Isosurface Display

This IDV display shows isosurfaces of WSR-88D Level II volume scans.

3.5.6  Level II Volume Grid Display

The IDV Level 2 radar grid display reads radial parameters from the Level 2 volume scan dataset and automatically generates 3D Cartesian grid parameters. The Integrated Data Viewer (IDV) employs an 8-point weighted interpolation method for this purpose. Efficient search algorithms are utilized to identify the 8 potential valid numbers of data points from 4 available surrounding rays. The resultant 3D Cartesian grid parameters can be showcased through various visualization techniques such as volume rendering, iso-surface representation, cross-sectional display, and plan-view presentations.

3.5.7  Doing More with Nexrad Data Displays

Learn to do more with NEXRAD Data Displays

 


Previous: Using the New Color Table Next: Loading WSR-88D Level II Radar Data Table of contents Frames User guide
Unidata IDV Workshop for version 6.3 > Accessing and Displaying Data