overview of nicam: global cloud-resolving simulations and physical schemes cola visit october 21-23,...
TRANSCRIPT
![Page 1: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/1.jpg)
Overview of NICAM: global cloud-resolving simulations
and physical schemes
COLA visitOctober 21-23, 2009
COLA, USA
Masaki SatohResearch Institute for Global Change, JAMSTEC
Center for Climate System Research, Univ. of Tokyohttp://nicam.jp
![Page 2: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/2.jpg)
Structure of our talks
• M. Satoh: Today Wed 11h– Overview of NICAM & physics schemes
• H. Tomita: Today afternoon Wed– Numerical methods of NICAM
• C. Kodama: Tomorrow morning, Thu– Tutorial package of NICAM
![Page 3: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/3.jpg)
Outlines
•Overview of NICAMNonhydrostatic ICosahedral Atmospheric Modelfor Global Cloud-Resolving Simulations
•NICAM simulations–MJO, TCs, monsoons, precipitation, diurnal variations & cloud properties
•Physical schemes•Summary and Future plans
MTSAT-1R, IR NICAM 3.5km, OLR
Miura et a.(2007,Science)
![Page 4: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/4.jpg)
NICAM• Nonhydrostatic Icosahedarl Atmospheric Model
Development since 2000Tomita and Satoh(2005, Fluid Dyn. Res.)Satoh et al.(2008, J. Comp. Phys.)
First global dx=3.5km run in 2004Tomita et al.(2005, Geophys. Res. Lett.)
• Icosahedral gridSpring dynamics smoothingSecond order accuracy
Tomita et al.(2001, J. Comp. Phys.), Tomita et al.(2002, J. Comp. Phys.)
• Flux-form conservative nonhydrostatic schemeSplit-explicit time integrationMass, total energy & momentum conserving
Satoh (2002, Mon. Wea. Rev.)Satoh (2003, Mon. Wea. Rev.)
![Page 5: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/5.jpg)
Model description Dynamics
governing equations Fully compressible non-hydrostatic system Fully compressible non-hydrostatic system
spatial discretization
horizontal grid configuration
vertical grid configuration
topography
Finite Volume Method
Icosahedral grid
Lorenz grid
Terrain-following coordinate
conservation Total mass, total energy
temporal scheme Slow mode - explicit scheme ( RK2, RK3 )Fast mode - Horizontal Explicit Vertical Implicit scheme
Physics
radiation MSTRNX / MSTRNX-AR5 (Sekiguchi and Nakajima, 2008)
cloud physics Grabowski(1998); NSW6(Tomita 2008);NDW6(Seiki 2009)
shallow clouds
boundary layer
MYNN2 , 2.5 or 3 (Nakanishi and Niino 2004)
surface flux Louis(1979), Uno et al.(1995)
surface processes SST specified & bucket / slab ocean & MATSIRO
![Page 6: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/6.jpg)
NICAM simulations• Boreal winter, 2006, 3.5km a week, 7km a month
– H. Miura
• Boreal summer, 2004; 7km 3months, 14km 5months– K. Oouchi , A. Noda
• Ensemble exp. for TC cyclogenesis– H. Taniguchi, W. Yanase
• Aerosol coupling exp.(Jul 2006; Nov 2006)– K. Suzuki, T. Seiki
• APE, Global Warming-conditions– H. Tomita, S. Iga; K. Oouchi, Y. Yamada; Y. Tsushima
• Regional NICAM using coordinate transformation
![Page 7: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/7.jpg)
NICAM SIMULATIONS
•MJO simulationsMJO simulations•Monsoon simulations, ISVs and TCs•Diurnal variability, cloud properties
![Page 8: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/8.jpg)
NICAM simulation: MJO ExperimentHorizontal grid spacing:
14 km, 7 km, 3.5 kmVertical domain
0 m ~ 38,000 m 40-levels (stretching grid)
Integration:7km, 14km runs: 30 days from 15 Dec 20067km, 14km runs: 30 days from 1 Nov 20063.5km run: 7 days from 25 Dec 2006
Initial conditions:
Interpolated from NCEP tropospheric analyses
(6 hourly, 1.0x1.0 degree grids)
Boundary conditions:
Reynolds SST, Sea ICE (weekly data)
ETOPO-5 topography, Matthews vegetation
UGAMP ozone climatology (for AMPI2)
•EXP. Dec 2006: Miura et al.(2007,Science), Nasuno et al.(2009,JMSJ), Fudeyasu et al. (2009, GRL), Liu et al. (2009, MWR)•EXP. Nov. 2006 (MISMO): Miura et al. (2009, GRL)
MISMO obs.
![Page 9: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/9.jpg)
Geo-stationary satellite(MTSAT-1R) Infrared image
NICAM 3.5km-grid mesh SimulationOutgoing Longwave Radiation(OLR)
![Page 10: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/10.jpg)
NCEP/CPC IR NICAM 7km, OLR
Miura et a.(2007,Science), Nasuno et al.(2009,JMSJ), Fudeyasu et al. (2009, GRL), Liu et al. (2009, MWR)
Realistic MJO simulation
![Page 11: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/11.jpg)
Precipitation (10S-5N) TRMM PR NICAM dx=7 km
T (975 hPa) NCEPNCEP NICAM dx=7 km
Hovmöller diagrams: precipitation, temperature
Eastward 10-15 m/sEastward 10-15 m/s1000-2000 km1000-2000 km(1-2 day)(1-2 day)
Role of cold pools
![Page 12: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/12.jpg)
Precipitation (10S-5N)
U (975 hPa) NCEPNCEP NICAM dx=7 km
Hovmöller diagrams: zonal winds & vertical cross section (composite)
![Page 13: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/13.jpg)
10-15 m/s
IR (NCEP/CPC)
Internal structure of MJO Hovmöller diagrams: IR/OLR (Eq.)
NICAM 7-km
~ 5m/s
10-15 m/s
~ 5m/s
Westward Rossby waves &Eastward Kelvin waves or squall type rain bands
![Page 14: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/14.jpg)
NICAM (dx=7km)Similar feature in observations (Dr. H. Yamada)
B
A
![Page 15: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/15.jpg)
B
A
![Page 16: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/16.jpg)
BA
![Page 17: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/17.jpg)
BA
![Page 18: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/18.jpg)
B A
![Page 19: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/19.jpg)
MISMO
( JAMSTEC ホームページより)http://www.jamstec.go.jp/jamstec-e/PR/0701/0122/image4.html
![Page 20: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/20.jpg)
6 Jan 2007
2Jan 2007
Roles of squall line types clusters on MJO
Precipitable water Column integrated cloud water
rainband
Miura et al.(2007)
![Page 21: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/21.jpg)
•Rossby waves: accumulation of water vapor on the from of MJOs. from eastward•Moist Kelvin waves becom active when MJOs are active. •Multiscale interactions of
Rossby/Kelvin waves and MJOs.
Ichikawa and Yasunari, 2007Nakazawa 1988
![Page 22: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/22.jpg)
MTSAT-1R NICAM
Dec. 29 2006
MJO-organized clouds
TS Isobel
MJO-organized clouds
TS Isobel
2weeks after initialization
La
titu
de
Surface rain rate (mm hour-1) by TRMM-TMI Surface rain rate (mm hour-1) by NICAM
0920 UTC 2 Jan.
2230 UTC 2 Jan.
300km
NICAM reasonably produced not only the large-scale circulation, such as the MJO, but also the embedded mesoscale features, such as TC rainbands.NICAM reasonably produced not only the large-scale circulation, such as the MJO, but also the embedded mesoscale features, such as TC rainbands.
Fudeyasu, H., Wang, Y., Satoh, M., et al. (2008) The global cloud-resolving model NICAM successfully simulated the lifecycles of two real tropical cyclones. Geophys. Res. Lett., 35, L22808.
![Page 23: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/23.jpg)
Sea
leve
l pre
ssur
e (h
Pa)
Date
Obs.
NICAM
Obs.
NICAM
12/28 29 30 31 1/1 2 3 4 5
1010
1000
990
980
970
960
Longitude
Latit
ude
28
29
3112 3
4
312
3
Observation vs. NICAM
BoM best track vs. NICAM-TC track
BoM-TC SLP vs. NICAM-TC SLP
BoM: Australian Government Bureau of Meteorology
NICAM reasonably captured Isobel’s motions, timing, and intensity changes. NICAM reasonably captured Isobel’s motions, timing, and intensity changes.
1
Fudeyasu et al. (2008, GRL)
![Page 24: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/24.jpg)
WWB
Front of WWB
Returned disturbance
TC genesis in MJO
TC development due to cyclonic shear
![Page 25: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/25.jpg)
NICAM SIMULATIONS
•MJO simulations•Monsoon simulations, ISVs and TCsMonsoon simulations, ISVs and TCs•Diurnal variability, cloud properties
![Page 26: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/26.jpg)
Monsoon simulations
• Boreal Summer experiments:• 14km: June-Oct. 2006• 7km: June-Aug. 2006
Oouchi et al. (2009) Asian summer monsoon simulated by a global cloud-system resolving model: Diurnal to intra-seasonal variability. Geophys. Res. Lett., 36, L11815.
Oouchi et al. (2009) A simulated preconditioning of typhoon genesis controlled by a boreal summer Madden-Julian Oscillation event in a global cloud-resolving mode. SOLA, 2009, Vol. 5, 065.068, doi:10.2151/sola.2009.017.
![Page 27: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/27.jpg)
Precipitation distribution over south Asiaaverage, June-Aug., 2004
TRMM observationTRMM observation NICAM 7km-grid exp.NICAM 7km-grid exp.
Oouchi et al. (2009, Geophys. Res. Lett.)
![Page 28: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/28.jpg)
Intra-Seasonal variabilities
Oouchi et al. (2009, Geophys. Res. Lett.)
Indian OceanWestern Pacific
•Northward propagation in the Indian Ocean•Monsoon index•Boreal summer MJOs and TC activities
Oouchi et al. (2009, SOLA)
![Page 29: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/29.jpg)
The Myanmar cyclone simulations
• The Myanmar cyclone Nargis• 14km: Apr. 2008, Ensembles• Regional NICAM exp.
Taniguchi, et al. (2009) Ensemble simulation of cyclone Nargis by a Global Cloud-system-resolving Model - modulation of cyclogenesis by the Madden-Julian Oscillation. J. Meteor. Soc., submitted.
Yanase et al. (2009) Environmental modulation and numerical predictabilityassociated with the genesis of tropical cyclone Nargis (2008). J. Meteor. Soc., submitted.
![Page 30: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/30.jpg)
Taniguchi et al. (2009, JMSJ, submitted)
Myanmar cyclone Nargis (2008) ensemble simulationsTC genesis captured with ISV and MJO
26 Apr. – 26 May 2008
![Page 31: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/31.jpg)
TC cyclogenesis in Indian Ocean is generally captured with ISV using stretch-
NICAMYanase et al. (2009, JMSJ, submittd)
Oct-Dec 2008 Apr-Jun 2008
![Page 32: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/32.jpg)
Number and intensities of tropical cyclones Yamada et al.(2009, submitted)
•TC threshold 17m/s•TC activities with ISVs, easterly
![Page 33: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/33.jpg)
CTL : JJA, 2004GW: JJA, average of 2070-99
Consistent with other studies: less number and stronger TCs
Change in Tropical cyclone intensities
Cloud height vs MSLP
![Page 34: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/34.jpg)
NICAM SIMULATIONS
•MJO simulations•Monsoon simulations, ISVs and TCs•Diurnal variability, cloud propertiesDiurnal variability, cloud properties
![Page 35: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/35.jpg)
Diurnal variation of precipitationPhase
Amplitude
NICAM 7km vs TRMM 3B4215 Dec 2006-15 Jan 2007Sato et al.(2009, J. Clim)
![Page 36: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/36.jpg)
Africa Maritime continent South America
3B42 7km-grd +14km-grid
・ Improvement of phase and amplitudes from 14km-mesh to 7km-mesh
Phase(15S-EQ)
Amplitude(15S-EQ)
![Page 37: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/37.jpg)
Ice cloud evaluation by split windows
NICAM 3.5km Cloud Ice+snowGOES-W Cloud ice(split window)
Inoue, T., Satoh, M., Hagihara, Y., Miura, H., Schmetz, J. (2009) Comparison of high-level clouds represented in a global cloud-system resolving model with CALIPSO/CloudSat and geostationary satellite observations. J. Geophys. Res., submitted
![Page 38: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/38.jpg)
Calipso/CloudSat simulated reflectivities by COSP
Cloud ice Snow
Calipso CloudSat
![Page 39: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/39.jpg)
Physical schemes• Cloud microphysics: NSW6
Tomita, H. (2008) New microphysics with five and six categories with diagnostic generation of cloud ice. J. Meteor. Soc. Japan, 86A,121-142
• Boundary layer: MYNN-level2Noda, A.T., Oouchi, K., Satoh, M., Tomita, H., Iga, S.-I., Tsushima, Y. (2009)
Importance of the subgrid-scale turbulent moist process: cloud distribution in global cloud-resolving simulations. Atmospheric Research, printing, doi:10.1016/j.atmosres.2009.05.007.
• Radiation: MSTRNX-AR5Sekiguchi, M., Nakajima, T. (2008) A k-distribution-based radiation code and its
computational optimization for an atmospheric general circulation model. JN= Journal of Quantitative Spectroscopy and Radiative Transfer, 109, 2779-2793. doi:10.1016/j.jqsrt.2008.07.013
• SST: slab ocean• Land: MATSIRO
Takata,K., Emori,S., Watanabe,T. (2003) Development of the minimal advanced treatments of surface interaction and runoff. Global and Planetary Change, 38, Issues 1-2, 209-222
![Page 40: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/40.jpg)
Cloud Microphysics Schemes (CMP)
• Grabowski (1998)• NSW6 (Tomita 2008,JMSJ)
– Single-moment 6-categories of water
• NDW6 (Seiki 2009)– Double-moment 6-categories of waterAfter Seifert and Beheng (2006)
![Page 41: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/41.jpg)
IWP distributionsWaliser et al. (2009) G98
NSW6
![Page 42: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/42.jpg)
IWC distributions
RAVE fvMMF NICAM
G98
NSW6
![Page 43: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/43.jpg)
Water substancesG98 NSW6(New exp.)
![Page 44: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/44.jpg)
Sensitivity to cloud microphysics schemes: CFADS- maritime continent region in the tropics
use of the satellite simulator COSPCloudSat/CALIPSO
Satoh et al. (2009, JGR)
NICAM-GCRM 3.5km, Grabowski(1998)
NSW6 (Tomita 2008), stretched-NICAM <5km
![Page 45: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/45.jpg)
PBL scheme• Noda et al. (2009, Atmos. Res.)• Yamada and Mellor level2• Nakanishi and Niino (2006, Bound.
Layer Meteor.)• Moist process
– Yamada and Mellor (2009,QJHMS)
• We use partial clouds only in the PBL scheme
• Cloud microphysics scheme resets the diagnosed clouds in PBL
• Radiation scheme does not consider partial clouds
![Page 46: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/46.jpg)
Cloud fractions
Noda et al. (2009) Importance of the subgrid-scale turbulent moist process: cloud distribution in global cloud-resolving simulations. Atmospheric Research, in press.
![Page 47: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/47.jpg)
Radiation budget• OLR: tuning
issue of CMP• PBL affects
shallow clouds and OSR
• Combination of PBLOSR
OLR
Solid: ERBE; dash: 14km; dot: 7km
![Page 48: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/48.jpg)
Radiation scheme
• Sekiguchi and Nakajima (2008)• MSTRNX:
Model Simulation radiation TRaNsfer code version 10Correlated K-distribution method
• Effective radius is independently specified from CMP– 8um for liquid cloud (qc+qr)
rain is not counted if OPT_QC_ONLY=TRUE
– 40um for total ice clouds (qi+qs+qg)
![Page 49: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/49.jpg)
Land model and ocean process
• Land: MATSIRO; Takata et al. (2003)– Sib-type model
• Slab Ocean– DZ=50m, nudging to SST with 5days
• Sea ice and snow=> Kodama’s talk
![Page 50: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/50.jpg)
Issues
• We have not yet done NICAM 7km runs with new physics, and they may include biases.
• Precipitation bias• Check OLR and OSR• Tropical cyclones
– Tracking tool available
![Page 51: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/51.jpg)
NICAM developement• On going & near future
– Cloud microphysics scheme: single moment bulk, NSW6, double moment bulk, NDW6
– Aerosols coupling (SPRINTARS) – Boundary layer scheme: MYNN2.5, 3– Dynamics: step mountains– Coupling to ocean models (COCO)– Assimilation LETKF (Kondo and Tanaka 2009,SOLA)– 3D radiation (Iwabuchi 2006,JAS) & bin microphysics (Iguchi) for references
• Use of 10PF super computer in Kobe (2012-)– 10 years time slice exp.
• AMIP-type, future time slice exp
– global runs with dx<1km– AO-coupled model; climate simulations
![Page 52: Overview of NICAM: global cloud-resolving simulations and physical schemes COLA visit October 21-23, 2009 COLA, USA Masaki Satoh Research Institute for](https://reader036.vdocument.in/reader036/viewer/2022062409/56649eab5503460f94bb0c86/html5/thumbnails/52.jpg)
Summary and final remarks
• NICAM simulates – good ISVs, TCs, and diurnal variations– multiscale structures of tropical convection– good cloud properties (high/low) with improved schemes
• Known biases– Stronger precipitation– TC numbers, depend on physics and resolutions
• Development on going• Data and model available for collaborations
– Further information http://nicam.jp