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Wednesday, July 20 • 3:30pm - 5:30pm
VIS: Visualization Showcase Panel I

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The panelists' Scientific Visualization Showcase submissions will be shown with each panelist providing insights into the process of creating cutting edge outreach visualizations.  The remainder of the session will be an open floor for discussion giving audience members the opportunity to engage panelists.

Visualization of Geodynamo Simulations

Panelist: Amit Chourasia

Earth’s magnetic field undergoes striking variations in direction and strength on a vast spectrum of time scales. Complex motions of the liquid iron core maintain the magnetic field, but the inner workings of this so-called dynamo process are obscured from direct observation and pose significant challenges for theoretical and computational modeling. This study aims to simulate the dynamo and determine which parameters can be associated with common features that are observed in the incomplete geological record of the magnetic field. The simulation produces an output comprised of magnetic field, the fluid flow, and temperature in the Earth’s core. Visualization results based on the output data are compared with observations projected down to the core surface, and to link those features with model behavior deep within the core. The visualization aspect of this study is enabling the scientists to identify interesting physical phenomena in the models that may be related to observation, including fluid up and down welling throughout the liquid core.

Insights into Alzheimer's Disease: Molecular Dynamics (MD) Simulations of Peptide-Membrane Interactions

Panelist: Ayat Mohammed

High performance computing (HPC) is essential in order to perform detailed MD simulations that allow for mechanistic insight into many diseases. Alzheimer’s disease (AD) pathology is primarily caused by the Aβ(42) peptide. MD simulations of a toxic (human Aβ(42) ) and non-toxic (rat Aβ(42) ) were performed in physiologically-relevant membrane environment conditions (310 K, 150 mM NaCl, pH 7) to assess differences in toxicity to membranes relevant to AD. The simulation results were processed with open tools and the results rendered with a raytracer. This paper describes the background science and the visualization techniques used to produce the accompanying video and compare the mechanisms of amyloid activity.

Interactive high quality visualization of long track EF5 Tornado with NVIDIA IndeX

Panelist: Mahendra Roopa

It is planned to show a 1+ TB of time-varying simulation data of an EF5 tornado within NVIDIA IndeX at interavtive frame rates. NVIDIA IndeX is an SDK that leverages GPU clusters for scalable, real-time, visualization and computing of multi-valued volumetric data together with embedded geometry data. See the following video: 
https://drive.google.com/file/d/0B8v1f5iVVCWpX3NmVzJSandPYVk/view?usp=sharing 
Different attributes of the tornado are shown within NVIDIA IndeX. 

MPAS-Ocean, Accelerated Climate Model for Energy

Panelist: Greg Abram

Climate change research relies on models to better understand and predict the complex, interdependant processes that affect the atmosphere, ocean, and land. These models are computationally intensive and produce terabytes to petabytes of data. Visualization and analysis is increasingly difficult, yet is critical to gain scientific insights from large simulations. The recently-developed Model for Prediction Across Scales-Ocean (MPAS-Ocean) is designed to investigate climate change at global high-resolution (5 to 10 km gridcells) on high performance computing platforms. In the accompanying video, we use state-of-the-art visualization techniques to explore the physical processes in the ocean relevant to climate change. These include heat transport, turbulence and eddies, weakening of the meridional overturning circulation, and interaction between a warming ocean and Antarctic ice shelves. The project exemplifies the benefits of tight collaboration among scientists, artists, computer scientists, and visualization specialists. 

An Extreme-Scale Implicit Solver for Complex PDEs: Highly Heterogeneous Flow in Earth's Mantle

Panelist: Greg Abram

This visualization shows the result of the Gordon Bell Award-winning simulation of mantle convection done by scientists from the University of Texas, IBM and Cal Tech. The flow is illustrated by the advection of particles positioned hear one face of the Marianas Trench, showing the cyclic flow down, eastward, up and westward. 

Potential Connectivity in the Coral Triangle

Panelist: Scott Pearse

Rising ocean temperatures have given rise to coral bleaching events at higher rates than have been seen in observed history. Researchers at the National Center for Atmospheric Research are studying how effectively coral reef ecosystems can repopulate each other after bleaching events through a metric called Potential Connectivity. In this visualization, we observe a state of the art flow simulation called CT-ROMS. This simulation replicates the nature of the Coral Triangle, recognized as the world center for marine biodiversity.

Video can be found here:http://www.vis.ucar.edu/~pearse/fullSequence_5.mp4 


Wednesday July 20, 2016 3:30pm - 5:30pm
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