Outlines of NICAM

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Outlines of NICAM

• NICAM (Nonhydrostatic ICosahedral Atmospheric
  Model)
• Icosahedral grid Nonhydrostatic model
  Explicit cloud physics
• Development since 2000 number of test cases
• Cloud microphysics instead of cumulus
  parameterization used for AGCMs
• Horizontal resolution up to dx3.5km
• Global Cloud-system Resolving simulations

Glevel-1
Glevel-3
Glevel-5
Glevel-0
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Model description
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Apr. 2004 short term exp.
GOES9
NICAM gl11 (3.5km-mesh)
(Left) An infrared image from GOES-9 at 0000
UTC on 6 April and (Right) the outgoing long-wave
radiation for DX-3.5 averaged over 90 min, which
corresponds to the period between 0000 UTC and
0130 UTC on 6 April. Miura et al.(2006,GRL,submit
ted)
Initial condition 2004/04/01 0UTC, 7 days
simulation with 3.5km-mesh
2004/04/06 00UTC
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Perpetual July exp. precipitation
GCM experiments with realistic land/sea
distribution Perpetual July exp. Cess et al.-type
climate sensitivity (CFMIP) 14km-mesh exp. 200
days, 7km-mesh, 40days
TRMM Jul. 2004
NICAM 14km one-month precip.
Iga et al.(2007)