Wataru Ohfuchi

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A spectral atmospheric general circulation model called AFES (AGCM for Earth Simulator) was developed and optimized for the architecture of the Earth Simulator (ES). The ES is a massively parallel vector supercomputer that consists of 640 processor nodes interconnected by a single stage crossbar network with its total peak performance of 40.96 Tflops. The(More)
Copyright 2008 by the American Geophysical Union. Paper number 2008GL034010. [4] The AGCM we use is called AFES (AGCM for the Earth Simulator) [Ohfuchi et al., 2007]. Its horizontal resolution corresponds to ~150 km grid spacing (T79) with 48 vertical levels. Reducing the resolution by half leads to notable weakening of stormtrack activity. As in Brayshaw(More)
A Community Model Code Numerical ocean modelling at NOAA’s Geophysical Fluid Dynamics Laboratory (GFDL) originates from Joe Smagorinsky’s recruitment in 1962 of Kirk Bryan, then at Woods Hole. Smagorinsky envisioned a suite of numerical models for use in understanding mechanisms for weather and climate phenomena, and for dynamical forecasts. This pioneering(More)
21 Chapter 1 Earth Science In order to pursue better understandings and predictions of high-impact phenomena in the atmosphere and ocean mainly at mid-latitudes, we conducted simulations of a typhoon and a tornado, predictability studies of precipitation in the Sahel and the Kuroshio Extension jet, and a global atmospheric data assimilation experiment with(More)
sphere: Small and Medium Scale Disturbances and Dust Lifting Processes. Yoshiyuki O. Takahashi, Yoshi-Yuki Hayashi, Masatsugu Odaka, and Wataru Ohfuchi, Department of Earth and Planetary Sciences, Kobe University, Japan (yot@people.kobe-u.ac.jp), Center for Planetary Sciences, Kobe University, Japan, Department of Cosmosciences, Hokkaido University, Japan,(More)
Tomohito J. Yamada 2, 3, , Shinjiro Kanae, Taikan Oki, Yukiko Hirabayashi, Takeshi Enomoto, Akira Yoshida, Nobumasa Komori, Wataru Ohfuchi Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, USA Goddard Earth Sciences and Technology Center, University of Maryland Baltimore County, USA Institute of Industrial Science, the University of(More)
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