The BCCCSM development and application for CMIP5

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• The BCC-CSM development and application for CMIP5

Tongwen Wu and Zaizhi Wang National Climate
Center, China Meteorological Administration
WGCM meeting, Paris Sept 22-24, 2008
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Content

• Simple introduction to BCC_CSM
• Some points for CMIP5

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• Simple introduction to BCC_CSM

• 1995-2001 Atmospheric and Oceanic coupled model
  
• (BCC_CM1.0)
• Atmospheric GCM (BCC_AGCM1.0 T63L16)
• Oceanic GCM (LASG/NCC_OGCM T63L30)
• Performed some experiments of IPCC AR4.
• 2002- later Operational seasonal climate
  prediction using
• BCC_CM1.0
• 2002-2004 Experimental prediction
• After 2005 Routine operational seasonal
  prediction
• 2004- now To develop a climate system model
  (BCC-CSM)

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Under way
Under way
coupled with the dynamic vegetation and global
carbon cycle
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(No Transcript)
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Zonal mean precipitation (mm/day) from BCC_AGCM2.2
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Precipitation (mm/day) from BCC_AGCM2.2
DJF
JJA
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BCC_AVIM land surface model

• BCC-AVIM is also a biogeochemical model and
  incorporates not only physical processes but also
  eco-physiological processes at land surface
• The model is coupled with the atmospheric GCM
  through flux coupler, exchanging momentum,
  energy, water as well as carbon between the
  atmosphere and land surface.
• BCC-AVIM consists of three main modules
• Soil-Vegetation-Atmosphere Transfer module
• Vegetation growth module
• Soil carbon pool module

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Simulation
Observation
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Simulation
Observation
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Net Primary Productivity
MODIS
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MOM4-L40 OGCM

• The MOM4-L40 is originated from GFDL MOM4 oceanic
  general circulation model. It spans the global
  range (1O lon. X1/31O lat. and L40).
• The oceanic carbon cycle module with simple
  biogeochemical processes (OCMIP2) is introduced
  to MOM4-L40

SIS (GFDL sea ice model)

• The horizontal resolution of SIS is same as that
  of MOM4-L40
• The GFDL Sea Ice Simulator (SIS) is a dynamical
  model with three vertical layers, one snow and
  two ice, and five ice thickness categories.

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MOM4
MOM4-L40
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Annual mean upward CO2 flux at ocean surface
(mol/m2/yr)
(Sarmiento et al., 2000)
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Climate System Model (BCC_CSM)
Aerosol(CUACEAero)
Chemistry MOZART-2
Atmosphere (BCC_AGCM)
Under way
Under way
Coupler
Land (BCC_AVIM)
Sea Ice (SIS)
Ocean (MOM4_L40)
BCC_CSM1.0 BCC_AGCM2.2 BCC_AVIM
MOM4_L40SIS without the dynamic
vegetation and global carbon cycle
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Precipitation from BCC_CSM1.0
DJF BCC_CSM1.0
JJA BCC_CSM1.0
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• Which model will be used for CMIP5

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Some points for CMIP5

• Will your group have an AOGCM, and ESM, or both?
• Both
• Will your group perform the short term decadal,
  long term mitigation, or both?
• Both. Try to perform all the CMIP5
  experiments.
• Will your new model have interactive aerosols or
  coupled chemistry?
• There is a version coupled with interactive
  aerosol which will be frozen at the end of 2008.
• A new version with coupled chemistry will
  be developed in the end of 2009. It will be used
  to perform experiments.
• Is the main constrain people, computer resources,
  or both?
• Computer resources.
• When do you plan to begin your experiments?
• Early of 2009

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Timetable for CMIP5

• CMA is planning to do all the
  proposed CMIP5 experiments by using climate
  system model BCC-CSM.
• January - June 2009
• Finish the pre-industrial control experiments
  (1.1 and 3.1). The basic performance of BCC-CSM
  will be evaluated.
• July 2009 - June 2010
• Finish other CMIP5 experiments except
  experiments using high resolution models and
  chemistry.
• July - Dec. 2010
• Finish the experiments in Table 8 with the
  atmospheric model at T106 (or higher resolution
  T213) and L26.

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Thanks!