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Outline

Outline. Update on recent CCSM organizational actions Recent North Atlantic results (Matthew) Update on global 0.1 º model on ES (Nori) Discussion of next steps. High Resolution Ocean Modeling in CCSM. “Kyosei Consortium” CRIEPI/NCAR/LANL/Kyushu Global 0.1 º CCSM Ocean Component.

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Outline

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  1. Outline • Update on recent CCSM organizational actions • Recent North Atlantic results (Matthew) • Update on global 0.1º model on ES (Nori) • Discussion of next steps

  2. High Resolution Ocean Modeling in CCSM “Kyosei Consortium” CRIEPI/NCAR/LANL/Kyushu Global 0.1º CCSM Ocean Component LANL/NCAR North Atlantic 0.1º Basin Simulations NPS/LANL Global 0.1º Navy Prediction System

  3. Some Relevant CCSM Organizational Issues • High resolution ocean modeling incorporated into CCSM science plan • SSC now endorses use of the Earth Simulator for CCSM science • Call for formation of “ES Science Team” to coordinate use of ES resource with CCSM working groups • Software engineering effort to port full CCSM system to ES nearly complete (currently running “climate equivalence” test)

  4. Next Steps • Goal: Configure eddy-resolving ocean component for fully coupled system experiments beginning in late-2004 / early-2005. • Analyze the results (~500 Gbytes per simulated year)! • Annual statistics for nearly all runs now on NCAR MSS in netCDF format • Small number of additional sensitivity studies ? (topography, closure, bottom boundary layer, forcing, ...) • Transition to tripole grid and POP-2

  5. How Does It Compare? ES ~ 3.5 – 4.5 years/day ~ 15x IBM P4 ~ 0.25 years/day Jones, P.W., P.H. Worley, Y. Yoshida, J.B. White and J. Levesque. Practical performance portability in the Parallel Ocean Program (POP). Concurrency and Computation: Practice and Experience. (in press). 2003

  6. Experiments

  7. RMS Sea Surface Height Altimeter Observations Simulation Difference J. McClean (NPS)

  8. Sensitivity to Biharmonic Viscosity High Med Low

  9. http://www.agri.pref.kanagawa.jp/suisoken/Kakubu/Kaiyo/kuroshio/kuroshio.htmhttp://www.agri.pref.kanagawa.jp/suisoken/Kakubu/Kaiyo/kuroshio/kuroshio.htm 01g Annual mean SSH (Modified Surface Salinity Forcing) Meandering Pattern of Kuroshio 01c(10yr) + 01g (5yr) 01c (Standard Surface Salinity Forcing) 01c(15yr)

  10. Effect of Horizontal Mixing Scheme (Annual Mean SSH) Case: 03g (in progress) V: anisotropic viscosity T,S: anisotropic GM scheme Case: 01d V: bi-harmonic mixing T,S: isotropic GM scheme Case: 01c V: bi-harmonic viscosity T,S: bi-harmonic diffusivity 6 yr 15 yr 15 yr

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