For more information about this meeting, contact Victor Nistor, Jinchao Xu, Robin Enderle, Xiantao Li, Yuxi Zheng, Kris Jenssen, Hope Shaffer.
| Title: | Computational Issues in Numerical Weather Prediction |
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| Seminar: | Computational and Applied Mathematics Colloquium |
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| Speaker: | Fuqing Zhang, Penn State Metereology |
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| Abstract: |
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| This talk will be primarily devoted to the use of high-performance computing
facilities to perform ensemble-based state estimation of hurricanes with
cloud-resolving numerical weather prediction models. I will be sharing our
recent experience in using thousands of cluster cores simultaneously at the
supercomputers of the Texas Advanced Computing Center (TACC) and the National
Oceanic and Atmospheric Administration (NOAA). Our cloud-resolving hurricane
analysis and forecast system assimilates high-resolution airborne Doppler
radar observations with an ensemble Kalman filter in realtime and
subsequently delivers both deterministic and ensemble forecasts to National
Hurricane Center (NHC) and also to be posted our research website available
in realtime to the public in a timely fashion.
As a result of the better computing, better resolution, better use of inner-core observations with an advanced data assimilation method, our hurricane forecasts were shown to improve intensity predictions by an average of 20 to 40 percent over the NHC official forecasts for 2008-2011 storms that have the airborne Doppler radar data. We were particularly successful for two of the most recent landfalling hurricanes (Ike 2008 and Irene 2011) that caused severe loss of lives and properties along the US coast. |
Room Reservation Information
| Room Number: | MB106 |
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| Date: | 02 / 17 / 2012 |
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| Time: | 03:35pm - 04:25pm |
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