Summary of Boundary Layer, Microphysics and Cumulus Options Jimy Dudhia NCAR/MMM.

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Presentation transcript:

Summary of Boundary Layer, Microphysics and Cumulus Options Jimy Dudhia NCAR/MMM

PBL schemes in V3.3 bl_pbl_ physics SchemeReferenceAdded 1YSUHong, Noh and Dudhia (2006, MWR)2004 2MYJJanjic (1994, MWR)2000 3GFSHong and Pan (1996, MWR)2005 4QNSESukoriansky, Galperin and Perov (2005, BLM)2009 5MYNN2Nakanishi and Niino (2006, BLM)2009 6MYNN3Nakanishi and Niino (2006, BLM)2009 7ACM2Pleim (2007, JAMC)2008 8BouLacBougeault and Lacarrere (1989, MWR)2009 9UWBretherton and Park (2009, JC) TEMFAngevine, Jiang and Mauritsen (2010, MWR) MRFHong and Pan (1996, MWR)2000

PBL schemes in V3.3 bl_pbl_ physics SchemeCoressf_sfclay_ physics Prognostic variables Diagnostic variables Cloud mixing 1YSUARW NMM1exch_hQC,QI 2MYJARW NMM2TKE_PBLEL_PBL, exch_hQC,QI 3GFS(hwrf) NMM3QC,QI 4QNSEARW NMM4TKE_PBLEL_PBL, exch_h, exch_m QC,QI 5MYNN2ARW1,2,5QKETsq, Qsq, Cov, exch_h, exch_m QC 6MYNN3ARW1,2,5QKE, Tsq, Qsq, Cov exch_h, exch_mQC 7ACM2ARW1,7QC,QI 8BouLacARW1,2TKE_PBLEL_PBL, exch_h, exch_m QC 9UWARW2TKE_PBLexch_h, exch_mQC 10TEMFARW10TE_TEMF*_temfQC, QI 99MRFARW NMM1QC,QI 3.3 changes

LES schemes bl_pbl_p hysics diff_optkm_optSchemeCoressf_sfclay _physics isfflxPrognostic variables 022tkeARW0,1,2 tke 0233d SmagorinskyARW0,1,2 Unified horizontal and vertical mixing (for dx~dz). Typically needed for dx<~200 m. Also use mix_isotropic=1. isfflxsf_sfclay_physicsHeat fluxDragReal/Ideal 00From namelist tke_heat_flux From namelist tke_drag_coefficient Ideal 11,2From LSM/sfclay physics (HFX, QFX) From sfclay physics (UST) Real 21,2From namelist tke_heat_flux From sfclay physics (UST) Ideal Namelist isfflx controls surface flux methods

Microphysics schemes in V3.3 mp_physicsSchemeReferenceAdded 1KesslerKessler (1969)2000 2Lin (Purdue)Lin, Farley and Orville (1983, JCAM)2000 3WSM3Hong, Dudhia and Chen (2004, MWR)2004 4WSM5Hong, Dudhia and Chen (2004, MWR)2004 5Eta (Ferrier)Rogers, Black, Ferrier et al. (2001)2000 6WSM6Hong and Lim (2006, JKMS)2004 7GoddardTao, Simpson and McCumber (1989,MWR)2008 8Thompson (+old)Thompson et al. (2008, MWR)2009 9Milbrandt 2-momMilbrandt and Yau (2005, JAS) Morrison 2-momHong and Pan (1996, MWR) SBU-YlinLin and Colle (2011, MWR) WDM5Lim and Hong (2010,...) WDM6Lim and Hong (2010,…)2009

Microphysics schemes in V3.3 mp_physicsSchemeCoresMass VariablesNumber Variables 1KesslerARWQc Qr 2Lin (Purdue)ARW (Chem)Qc Qr Qi Qs Qg 3WSM3ARWQc Qr 4WSM5ARW NMMQc Qr Qi Qs 5Eta (Ferrier)ARW NMMQc Qr Qs (Qt*) 6WSM6ARW NMMQc Qr Qi Qs Qg 7GoddardARWQc Qr Qi Qs Qg 8ThompsonARW NMMQc Qr Qi Qs QgNi Nr 9Milbrandt 2-momARWQc Qr Qi Qs Qg QhNc Nr Ni Ns Ng Nh 10Morrison 2-momARW (Chem)Qc Qr Qi Qs QgNr Ni Ns Ng 13SBU-YLinARWQc Qr Qi Qs 14WDM5ARWQc Qr Qi QsNn** Nc Nr 16WDM6ARWQc Qr Qi Qs QgNn** Nc Nr * Advects only total condensate ** Nn= CCN number

Cumulus schemes in V3.3 cu_physicsSchemeCoresMoisture Tendencies Momentum Tendencies Shallow Convection 1Kain-Fritsch EtaARW NMMQc Qr Qi Qsnoyes 2Betts-Miller-JanjicARW NMM-noyes 3Grell-DevenyiARWQc Qino 4Simplified Arakawa- Schubert ARW NMMQc Qiyes (NMM)yes (ARW) 5Grell-3ARWQc Qinoyes 6TiedtkeARWQc Qiyes 7Zhang-McFarlaneARWQc Qiyesno 14New SASARWQc Qiyes 99Old Kain-FritschARWQc Qr Qi Qsno

Solver Sequence  wuv  q Water ice Scalar Chem Soil T Soil Q Rad Sfc PBL Cnv Adv Diff Dyn Adv Diff Mic tendency update adjust Time-step

Time-step schematic Physics Tendencies First-guess Advection 1/3 step Intermediate Advection 1/2 step Final Advection Full step Microphysics 1st RK step 2nd RK step 3rd RK step Small steps