Seminário: K-computer project in Japan

02/06/2014 - 13:00
Auditório 2 do IAG (Rua do Matão, 1226, Cidade Universitária)
O seminário "K-computer project in Japan" será apresentado pelo Dr. Kazuo Saito (Meteorological Research Institute, Japan Meteorological Agency) como parte de visita de delegação japonesa ao Departamento de Ciências Atmosféricas, a convite do Prof. Dr. Augusto José Pereira Filho.
A research on super high-resolution mesoscale numerical weather prediction with the K-computer is introduced. This research project is one of the five fields of the MEXT-funded national research project in Japan, the Strategic Programs for Innovative Research (SPIRE). Following three subjects are  underway to show the feasibility of precise prediction of severe mesoscale phenomena: 1) Development of cloud resolving 4-dimensional data assimilation systems, 2) Development and validation of a cloud resolving ensemble analysis and forecast system, and 3) Basic research with very high resolution atmospheric models. In the presentation, development of advanced data assimilation methods (e.g., cloud resolving 4D-VAR, two-way nested LETKF) is introduced, and examples of high-resolution and super high-resolution data assimilation/ensemble experiments of severe weathers (typhoon, torrential rain, and tornado) are shown. A realistic simulation of observed 3-dimentional structure of the sea-breeze front head with a nested building-resolving LES model will also presented.