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The IDV: Unidata’s Integrated Data Viewer Mike Voss Department of Meteorology SJSU – Oct 11,...
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Transcript of The IDV: Unidata’s Integrated Data Viewer Mike Voss Department of Meteorology SJSU – Oct 11,...
![Page 1: The IDV: Unidata’s Integrated Data Viewer Mike Voss Department of Meteorology SJSU – Oct 11, 2006.](https://reader036.fdocuments.us/reader036/viewer/2022082611/56649ebe5503460f94bc793e/html5/thumbnails/1.jpg)
The IDV: Unidata’s Integrated Data Viewer
Mike Voss
Department of Meteorology
SJSU – Oct 11, 2006
![Page 2: The IDV: Unidata’s Integrated Data Viewer Mike Voss Department of Meteorology SJSU – Oct 11, 2006.](https://reader036.fdocuments.us/reader036/viewer/2022082611/56649ebe5503460f94bc793e/html5/thumbnails/2.jpg)
Outline
• Unidata’s Role in Geosciences Education
• Motivation for developing the IDV
• Hands off introduction to the IDV
• Hands on IDV session
![Page 3: The IDV: Unidata’s Integrated Data Viewer Mike Voss Department of Meteorology SJSU – Oct 11, 2006.](https://reader036.fdocuments.us/reader036/viewer/2022082611/56649ebe5503460f94bc793e/html5/thumbnails/3.jpg)
Unidata
• Located in Boulder, NSF funded, part of UCAR
• Mission
“ Provide data, tools, and community leadership for enhanced earth system education”
• Main software and systems
– netCDF, LDM/IDD, GEMPAK, McIDAS, THREDDS
– and now the IDV
• Voss and Cordero (and the lab)
![Page 4: The IDV: Unidata’s Integrated Data Viewer Mike Voss Department of Meteorology SJSU – Oct 11, 2006.](https://reader036.fdocuments.us/reader036/viewer/2022082611/56649ebe5503460f94bc793e/html5/thumbnails/4.jpg)
Motivation for developing the IDV
• Enable remote access to data
• 3-D visualization
• Data formats – netCDF, grib, grib2, text, others
• Platform independence - Java
• Leverage web services
![Page 5: The IDV: Unidata’s Integrated Data Viewer Mike Voss Department of Meteorology SJSU – Oct 11, 2006.](https://reader036.fdocuments.us/reader036/viewer/2022082611/56649ebe5503460f94bc793e/html5/thumbnails/5.jpg)
Real-time Data Volume Issues
• LDM/IDD - 3 GB of real-time data per hour…and increasing
• Bandwidth hog, very inefficient
• Limits participation because you need bandwidth and expertise to handle data, both of which are expensive.
• Solution: build remote access into software
![Page 6: The IDV: Unidata’s Integrated Data Viewer Mike Voss Department of Meteorology SJSU – Oct 11, 2006.](https://reader036.fdocuments.us/reader036/viewer/2022082611/56649ebe5503460f94bc793e/html5/thumbnails/6.jpg)
Remote Access to Data
• Remote access capability over the Internet relieves the need to distribute all the data…and lowers the barriers to entry: “democratization of data”
• Unidata is making this happen with IDV and THREDDS catalogs. (Thematic Real-time Environmental Distributed Data Services)
• Current software (GEMPAK) does not allow remote access to data
![Page 7: The IDV: Unidata’s Integrated Data Viewer Mike Voss Department of Meteorology SJSU – Oct 11, 2006.](https://reader036.fdocuments.us/reader036/viewer/2022082611/56649ebe5503460f94bc793e/html5/thumbnails/7.jpg)
Introduction to the IDV
• Hands off demo
![Page 8: The IDV: Unidata’s Integrated Data Viewer Mike Voss Department of Meteorology SJSU – Oct 11, 2006.](https://reader036.fdocuments.us/reader036/viewer/2022082611/56649ebe5503460f94bc793e/html5/thumbnails/8.jpg)
Disadvantages & Limitations of the IDV
• Different, new software to learn
• Can’t save data with a bundle…..yet
• Slow, memory hog…needs at least 1 GB of RAM
• Not yet ideal for meteorological analysis….has limited grid diagnostic capabilities
• 3D Meteorology is a new paradigm…it’s hard to overcome
established methods for observation and analysis
![Page 9: The IDV: Unidata’s Integrated Data Viewer Mike Voss Department of Meteorology SJSU – Oct 11, 2006.](https://reader036.fdocuments.us/reader036/viewer/2022082611/56649ebe5503460f94bc793e/html5/thumbnails/9.jpg)
OK, let’s try the IDV
• Go to a computer
• Start the IDV
• Also start a web browser and go to my web page: http://www.met.sjsu.edu/faculty/voss.html
– (and click on the instructions)
• Follow instructions