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Tropical performance of the CCSR Coupled GCM

Tropical performance of the CCSR Coupled GCM. Masahide Kimoto Center for Climate System Research University of Tokyo in collaboration with All the CCSR-family members. CCSR Coupled Model. ＭＩＲＯＣ２．１. Atmosphere CCSR/NIES AGCM v5.6 Nakajima et al. (2000) radiation (2 stream DOM/adding)

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Tropical performance of the CCSR Coupled GCM

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  1. Tropical performance of the CCSR Coupled GCM Masahide Kimoto Center for Climate System Research University of Tokyo in collaboration with All the CCSR-family members

  2. CCSR Coupled Model ＭＩＲＯＣ２．１ • Atmosphere • CCSR/NIES AGCM v5.6 • Nakajima et al. (2000) radiation (2 stream DOM/adding) • Simplified Arakawa-Schubert • Le Treut-Li prognostic cloud • Bucket land surface • Grid advection for tracers (FFSL; Flux Form Semi-Lagrangian/van Leer) • Mellor-Yamada lvl2.0 + (optional) non-local PBL, cloud-top entrainment instability • MacFarlane GWD • Ocean • COCO (CCSR Ocean Component Model; http://www.ccsr.u-tokyo.ac.jp/~hasumi/COCO/) • Rigid-lid, vertical-z • UTOPIA tracer advection • Isopycnal diffusion/Gent-McWilliams eddy-iunduced tracer transport • Noh & Kim mixed layer • Nakano-Suginohara bottom boundary layer parameterization • Sea Ice • Semtner 0-layer thermodynamics + EVP rheology No flux correction applied

  3. Obs. CGCM

  4. Present version Previous version

  5. OLR Obs. CGCM

  6. Seasonal Cycle of SST Obs. CGCM

  7. Seasonal Cycle of Rain Obs. CGCM

  8. Obs. CGCM

  9. EOFs of Vertically Integrated Moisture Flux Vector Mode 2 Mode 3 Mode 1

  10. Some modifications for better upper-ocean temperature profile EXP.III • Time fiｌter for K • Reduce min(KH,KM) • Non-local PBL + CTEI CTL OBS

  11. CTL EXP III OBS

  12. EXP III Obs. CTL

  13. Increase/decrease low-level clouds

  14. Decoupled Coupled

  15. Mid-CTL OBS Hi-CGCM ?

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