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High Resolution Global Ocean Model on Earth Simulator

High Resolution Global Ocean Model on Earth Simulator. By Norikazu Nakashiki (CRIEPI) Yoshikatsu Yoshida (CRIEPI) Frank O. Bryan (NCAR) Richard D. Smith (LANL). High Resolution Global Ocean Model (POP) on ES.

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High Resolution Global Ocean Model on Earth Simulator

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  1. High Resolution Global Ocean Model on Earth Simulator By Norikazu Nakashiki (CRIEPI) Yoshikatsu Yoshida (CRIEPI)Frank O. Bryan (NCAR) Richard D. Smith (LANL)

  2. High Resolution Global Ocean Model (POP) on ES Super High Resolution Global Ocean Model (ocean stand alone) Resolution: 10km x 10km x 40 Level (3600x2400x40) (Pole is shifted on North America) Horizontal mixing : Bi-harmonic Mixing(velocity, temp. sal.） Vertical mixing : Kpp Mixing Time step for integration : 220/day (≒ 6min.) Earth Simulator Fine ・Effect of variability 　（Kuroshio, etc） ・Short term Spatial resolution Eddy Resolving Model Direct Meso-scale Eddy Spatial scale : O(10km)～ O(100km) Parameterize Eddy Permitting Model Moderate Resolution Global Ocean Model （climate model：atm.-ocean coupled model） Resolution : 100km x 100km x 40 Level (320x384x40) (Pole is shifted on Green Land) Horizontal mixing : An Isotropic Mixing （velocity） 、　 GM Mixing （temp. sal.） Vertical mixing : Kpp Mixing Time step for integration : 23/day (≒60min.) Coerce ・Change of mean characteristics ・Long Period

  3. Meridional Heat Transport & Pacific Intermediate Water

  4. Case Surface B.C. Mixing Scheme Integration Memo Horizontal Vertical FY 2 0 0 2 01c Monthly Climatology NCEP(1985-1988) Velocity Bi-harmonic ( am = -0.9e１８cm２/s ) Tracer (temp. sal.) Bi-harmonic ( ah = -3.0e１７cm２/s) KPP 20 yr Basic case for sensitivity analysis 01d Velocity Bi-harmonic ( am = -2.7e１８cm２/s ) Tracer (temp. sal.) GM scheme KPP 15 yr Change Horizontal mixing FY 2 0 0 3 01g Same as 01c KPP 15yr Weak SFW Flux restoring 02a Same as 01c KPP 2 yr w/ 106L 03c Same as 01c KPP 15 yr Change North Atlantic restoring 03g Velocity Anisotropic visc. Tracer (temp. sal.) Anisotropic GM KPP 15yr Change horizontal mixing 03i Same as 01c KPP 15yr Change topo. ETOPO -> SKKU Computation on Earth Simulator in FY2003

  5. Vertical High Resolution w/ 106 L 40 level vs. 106 level

  6. Meridional Section at Eq. Area W/ 40L W/ 40L W/ 106L W/ 106L

  7. Zonal Section near Nansei Islands Northward Velocity at 26.7N Northward Velocity at 27.3N W/ 40L W/ 106L W/ 40L W/ 106L

  8. Current & Front around Japan KR: Kuroshio KF: Kuroshio Front KRE: Kuroshio Extension KCC: Kuroshio Counter Current OY: Oyashio OF: Oyashio Front STCC: Sub-tropical Counter Current STF: Sub-tropical Front NEC: North Equatorial Current TS: Tsushima Current TG: Tsugaru Current SY: Soya Current EK: East Korea Current LM: Liman Current W: Warm Eddy Encyclopedia of Oceanography, Ed. Wadachi

  9. Effect of Horizontal Mixing 01c Vel. : Biharmonic Tracer: Biharmonic 03g Vel : Anisotropic Visc. Tracer: Anisotropic GM ② front, warm/cold eddy ④steady eddy ① meandering KE at surface ③1st branch of Tsushima current

  10. Effect of Bottom Topography SKKU Blue →redused Red→enhanced ETOPO SKKU-ETOPO

  11. Volume Transport around Japan (by ETOPO) SST (℃) Soya Volume Transport at Kuroshio (Sv) Tsushima Tsugaru Izu 30-60 Sv Kuroshio Tokara 13 Sv Izu Tokara Year Japan Sea Volume Transport in Japan sea (Sv) Tsushima2.2Sv Tsugaru1.5Sv Soya0.7Sv Year

  12. Volume Transport around Japan (by SKKU) Izu 30-60 Sv Izu Tokara 13 Sv Tsushima2.2Sv Tsushima Tsugaru1.5Sv Soya0.7Sv

  13. Weak Restoring of Surface Flux Surface Heat Flux Surface Fresh Water Flux Bulk-NCEP Restoring

  14. branch Global Diagnostics (01g)

  15. Base case GM Weak SFWF Aniso GM & visc.

  16. Weak SFWF x1deg Aniso GM & visc. GM

  17. “Kyousei” project (ocean part) 1st. phase 2nd. phase FY2002 FY2003 FY2004 FY2005 FY2006 22node 17-18 yrs/day IPCC Run Prediction of Global Warming Sept. Feb. ? ? 20 ? model year High Res. Global Ocean Model (Regional Impact of Global Warming) 50 ? model year J High Res. Atm-Ocean model

  18. Regional Impact Study by High Resolution Global Ocean Model Global prediction (IPCC Run) CCSM2.0 Boundary Conditions Ice　ＣＳＩＭｘ１ Regional effect(Local & Snapshot) Atm. x1 Flux Coupler Ice Model CSIM4 (x0.1) Land Data Atmosphere Air Density Specific Humidity Sea Level Pressure Air Temperature U Wind, V Wind Precipitation Cloud Fraction OceanPOP x1 Data Land Runoff Flux Coupler (CPL6) Ocean Model POP1 (x0.1, 40L) Vector/parallel optimization will be finished soon.

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