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HD(CP)² - Post-Processing and Visualization Workshop 2017

Data processing, analysis and visualization are tremendously important, yet somehow also difficult and complex tasks to accomplish. In this two day workshop we'll show you how to transform raw HD(CP)² output into data ready to be visualized within ParaView. ParaView is a free available 3D visualization software that is available on Mistral, and which is exceptionally well suited for the visualization and analysis of regular rectilinear, as well as original ICON netCDF data sets.
May 03, 2017 10:00 AM to May 04, 2017 03:00 PM (Europe/Berlin / UTC200)
DKRZ main seminar room 34
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On Wednesday and Thursday, May 3rd and 4th, the DKRZ hosts a special post-processing and visualization workshop dedicated to the work with HD(CP)² data. We will work with the raw model output and show how this data can be processed in order to be analyzed and visualized with a number of tools. We will work with regular lon/lat data, as well as with data stored on the original ICON grid. Furthermore, we work with various 2D and 3D variables, as well as show how to create animations of the data that show their development over time.

In this workshop we use CDO, NCO and Python for the data processing, as well as ParaView for 2D and 3D data analysis and visualization. ParaView is an open source visualization package that reads a variety of different data formats and lattices and implements the most common visualization techniques. Examples visualizations and animations can be found in the Figures below.


Fig1. Display of liquid cloud water (gray volume rendering), cloud ice (purple isosurface), rain (blue isosurface) and wind magnitude (streamtubes). Note the various cloud types at different altitudes, as well as the huge cumulonimbus incus cloud in the south towards the Alps. It has a large anvil shaped ice cap and strong upward moving winds.

Wednesday, May 3rd 10.00 am -- 5:30 pm

Thursday, May 4th 10.00 am -- 3:00 pm


  • Basic Linux/Unix knowledge
  • Account on Mistral (If you don't have one: Let us know!)
  • Own laptop with ssh and vncviewer installed (Please confirm here and/or here that you can start a GPU session on your laptop!)


Workshop Overview:

  • HD(CP)² data and grids - Overview what data is available and where to find it
  • Data processing using CDO (selection, subsetting, resampling to lon/lat, grid setting etc.)
  • Working with meteogram data (plotting 1D variables, data cleaning, interpolation)
  • Starting ParaView and basic data visualization, modification and selection (clipping, thresholds, slicing, calculator module)
  • Basic and advanced scalar and vector visualization techniques (surface and volume rendering, streamlines, glyphs)
  • Data exploration and selection (scatterplots, parallel coordinates, histograms)
  • Linked and comparative views
  • Adding annotations and orography, creating animations and snapshots


If you are interested, please register for the workshop below. The workshop will be limited to 25 seats. First come, first serve.

Registration is closed!



Fig2: Interactive visualization of very large HD(CP)² data in ParaView. Visualized is Domain1 from Phase2 showing Hurricane Gaston. This video shows specific humidity using volume rendering, as well as wind magnitude, streamlines and the gradients of the wind field.


Fig3: Visualization of liquid cloud water, cloud ice and rain for the entire day of April 26, 2013.


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