vrad: a browser for nexrad reflectivity data · vrad: a browser for nexrad reflectivity data anton...
TRANSCRIPT
![Page 1: VRAD: A Browser for NEXRAD Reflectivity Data · VRAD: A Browser for NEXRAD Reflectivity Data Anton Kruger Witold Krajewski Iowa Institute of Hydraulic Research The University of Iowa](https://reader031.vdocuments.site/reader031/viewer/2022021901/5b7e10cb7f8b9a9d078e17c3/html5/thumbnails/1.jpg)
VRAD: A Browser for NEXRADReflectivity Data
Anton Kruger
Witold Krajewski
Iowa Institute of Hydraulic ResearchThe University of Iowa
![Page 2: VRAD: A Browser for NEXRAD Reflectivity Data · VRAD: A Browser for NEXRAD Reflectivity Data Anton Kruger Witold Krajewski Iowa Institute of Hydraulic Research The University of Iowa](https://reader031.vdocuments.site/reader031/viewer/2022021901/5b7e10cb7f8b9a9d078e17c3/html5/thumbnails/2.jpg)
Why a Visualization Tool?
• Quality control - “have you looked at thedata?”
• Patterns that are difficult to anticipate orformalize are very easily recognized byhumans.
• Reanalysis of NEXRAD data - find interestingportions of rainfield.
![Page 3: VRAD: A Browser for NEXRAD Reflectivity Data · VRAD: A Browser for NEXRAD Reflectivity Data Anton Kruger Witold Krajewski Iowa Institute of Hydraulic Research The University of Iowa](https://reader031.vdocuments.site/reader031/viewer/2022021901/5b7e10cb7f8b9a9d078e17c3/html5/thumbnails/3.jpg)
Example 1
Notice how automatic quality control producedmissing reflectivity spokes
![Page 4: VRAD: A Browser for NEXRAD Reflectivity Data · VRAD: A Browser for NEXRAD Reflectivity Data Anton Kruger Witold Krajewski Iowa Institute of Hydraulic Research The University of Iowa](https://reader031.vdocuments.site/reader031/viewer/2022021901/5b7e10cb7f8b9a9d078e17c3/html5/thumbnails/4.jpg)
Example 2
Wind and seagenerated clutter
![Page 5: VRAD: A Browser for NEXRAD Reflectivity Data · VRAD: A Browser for NEXRAD Reflectivity Data Anton Kruger Witold Krajewski Iowa Institute of Hydraulic Research The University of Iowa](https://reader031.vdocuments.site/reader031/viewer/2022021901/5b7e10cb7f8b9a9d078e17c3/html5/thumbnails/5.jpg)
Example 3
Sun spike
![Page 6: VRAD: A Browser for NEXRAD Reflectivity Data · VRAD: A Browser for NEXRAD Reflectivity Data Anton Kruger Witold Krajewski Iowa Institute of Hydraulic Research The University of Iowa](https://reader031.vdocuments.site/reader031/viewer/2022021901/5b7e10cb7f8b9a9d078e17c3/html5/thumbnails/6.jpg)
Requirement for Tool
• It must provide rapid navigation
– Between any volume in the data set
– Between any sweep in a volume
• Must show PPI, RHI, and AHI.
• No polar-Cartesian remapping.
• Must be very easy to use (KIS).
• It is not an analysis tool.
![Page 7: VRAD: A Browser for NEXRAD Reflectivity Data · VRAD: A Browser for NEXRAD Reflectivity Data Anton Kruger Witold Krajewski Iowa Institute of Hydraulic Research The University of Iowa](https://reader031.vdocuments.site/reader031/viewer/2022021901/5b7e10cb7f8b9a9d078e17c3/html5/thumbnails/7.jpg)
A Virtual Radar (VRAD)
Menu
Legend
Navigationbuttons
Mode buttons
Browse window andslider
![Page 8: VRAD: A Browser for NEXRAD Reflectivity Data · VRAD: A Browser for NEXRAD Reflectivity Data Anton Kruger Witold Krajewski Iowa Institute of Hydraulic Research The University of Iowa](https://reader031.vdocuments.site/reader031/viewer/2022021901/5b7e10cb7f8b9a9d078e17c3/html5/thumbnails/8.jpg)
The Menus
Selecting a year
Selecting thebackground
Selecting a colormap
Selecting a site
Selecting abrowse statistic
![Page 9: VRAD: A Browser for NEXRAD Reflectivity Data · VRAD: A Browser for NEXRAD Reflectivity Data Anton Kruger Witold Krajewski Iowa Institute of Hydraulic Research The University of Iowa](https://reader031.vdocuments.site/reader031/viewer/2022021901/5b7e10cb7f8b9a9d078e17c3/html5/thumbnails/9.jpg)
Browse PPI Mode
Scan levelbrowsing
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Browse PPI Mode (Up)
Not inbase scananymore
![Page 11: VRAD: A Browser for NEXRAD Reflectivity Data · VRAD: A Browser for NEXRAD Reflectivity Data Anton Kruger Witold Krajewski Iowa Institute of Hydraulic Research The University of Iowa](https://reader031.vdocuments.site/reader031/viewer/2022021901/5b7e10cb7f8b9a9d078e17c3/html5/thumbnails/11.jpg)
PPI and RHI Mode
RHI mode
Slicer
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PPI and AHI Mode
AHI Mode
Slicer
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VRAD’s Future
• Runs on HP-UX platform: should it be ported to
other platforms?
• What additional features (saving, printing, etc.)
are desirable?
• Q: What is the future of WATADS?
• A: WATADS needs VRAD and RLE
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Animation (click on the image to play)