WRF - Developmental Testbed Center

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WRF-NMM. Indication of the options that have been tested, as well as the level of thetesting, is included in the discussion below.It is recommended that the same physics be used in all grids (coarsest and nests). Theonly exception is that the cumulus parameterization may be activated on coarser gridsand turned off on finer grids.Microphysics (mp_physics)a. Kessler scheme: A warm-rain (i.e. no ice) scheme used commonly in idealizedcloud modeling studies (mp_physics = 1).b. Lin et al. scheme: A sophisticated scheme that has ice, snow and graupel processes,suitable for real-data high-resolution simulations (2).c. WRF Single-Moment 3-class scheme: A simple efficient scheme with ice and snowprocesses suitable for mesoscale grid sizes (3).d. WRF Single-Moment 5-class scheme: A slightly more sophisticated version of (c)that allows for mixed-phase processes and super-cooled water (4). (This scheme hasbeen preliminarily tested for WRF-NMM.)e. Eta microphysics: The operational microphysics in NCEP models. A simpleefficient scheme with diagnostic mixed-phase processes (5). (This scheme is welltested for WRF-NMM, used operationally at NCEP.)f. Modified Eta microphysics: Similar to Eta microphysics (e), but modified to besuitable for the tropics (85). (This scheme is well tested and used operationally atNCEP for HWRF.) New in Version 3.2.g. WRF Single-Moment 6-class scheme: A scheme with ice, snow and graupelprocesses suitable for high-resolution simulations (6). (This scheme has beenpreliminarily tested for WRF-NMM.)h. Goddard microphysics scheme. A scheme with ice, snow and graupel processessuitable for high-resolution simulations (7).i. Milbrandt-Yau Double-Moment 7-class scheme (9). This scheme includes separatecategories for hail and graupel with double-moment cloud, rain, ice, snow, graupeland hail. New in Version 3.2.j. New Thompson et al. scheme: A new scheme with ice, snow and graupel processessuitable for high-resolution simulations (8). This adds rain number concentration andupdates the scheme from the one in Version 3.0. New in Version 3.1. (This schemehas been preliminarily tested for WRF-NMM.)WRF-NMM V3: User’s Guide 5-3
k. Morrison double-moment scheme (10). Double-moment ice, snow, rain and graupelfor cloud-resolving simulations.l. WRF Double-Moment 5-class scheme (14). This scheme has double-moment rain.Cloud and CCN for warm processes, but is otherwise like WSM5.m. WRF Double-Moment 6-class scheme (16). This scheme has double-moment rain.Cloud and CCN for warm processes, but is otherwise like WSM6.n. Thompson et al. (2007) scheme (98). This is the older Version 3.0 Thompsonscheme that used to be option 8. (This scheme has been preliminarily tested for WRF-NMM.)Longwave Radiation (ra_lw_physics)a. RRTM scheme: Rapid Radiative Transfer Model. An accurate scheme using lookuptables for efficiency. Accounts for multiple bands, trace gases, and microphysicsspecies (ra_lw_physics = 1). (This scheme has been preliminarily tested for WRF-NMM.)b. GFDL scheme: Eta operational radiation scheme. An older multi-band scheme withcarbon dioxide, ozone and microphysics effects (99). (This scheme is well tested forWRF-NMM, used operationally at NCEP.) Note: If it is desired to run GFDL with amicrophysics scheme other than Ferrier, a modification to module_ra_gfdleta.F isneeded to comment out (!) #define FERRIER_GFDL.c. Modified GFDL scheme: Similar to the GFDL scheme (b) but modified to besuitable for the tropics (98). (This scheme is well tested and used operationally atNCEP for HWRF.) New in Version 3.2.d. CAM scheme: from the CAM 3 climate model used in CCSM. Allows for aerosolsand trace gases (3).e. RRTMG scheme. A new version of RRTM (4). It includes the MCICA method ofrandom cloud overlap.Shortwave Radiation (ra_sw_physics)a. Dudhia scheme: Simple downward integration allowing efficiently for clouds andclear-sky absorption and scattering. When used in high-resolution simulations, slopingand shadowing effects may be considered (ra_sw_physics = 1). (This scheme has beenpreliminarily tested for WRF-NMM.)b. Goddard shortwave: Two-stream multi-band scheme with ozone from climatologyand cloud effects (2).WRF-NMM V3: User’s Guide 5-4
Page 1 and 2: ForewordUser's Guide for the NMM Co
Page 3 and 4: • WPP Directory Structure 7-3•
Page 5 and 6: The WRF modeling system software is
Page 7 and 8: WRF-NMM FLOW CHARTTerrestrialDataMo
Page 9 and 10: Vendor Hardware OS CompilerCray X1
Page 11 and 12: If all of these executables are def
Page 13 and 14: Once the tar file is obtained, gunz
Page 15 and 16: HWRF is set, then (3) will be autom
Page 17 and 18: In addition to these three links, a
Page 19: • Real-data simulations• Non-hy
Page 23 and 24: g. GFDL surface layer (88): (This s
Page 25 and 26: Other physics optionsa. gwd_opt: Gr
Page 27 and 28: to the convergence of meridians app
Page 29 and 30: Variable NamesValue(Example)Descrip
Page 39 and 40: mpirun.lsf wrf.exeand for interacti
Page 41 and 42: The boundary conditions for the nes
Page 43 and 44: Examples:1. One nest and one level
Page 45 and 46: ottom_top_stag = 28 ;soil_layers_st
Page 47 and 48: float HLENSW(Time, south_north, wes
Page 49 and 50: float HBOTS(Time, south_north, west
Page 51 and 52: operational mesoscale Eta model. J.
Page 53 and 54: Mlawer, E. J., S. J. Taubman, P. D.
Page 55 and 56: NCEP WRF Postprocessor (WPP)WPP Int
Page 57 and 58: ./configureYou will be given a list
Page 59 and 60: equested output field. If the pre-r
Page 61 and 62: RAINCV SNOW HBOTRAINNCVSNOWCNote: F
Page 63 and 64: Running WPPFour scripts for running
Page 65 and 66: i. As the grid id of a pre-defined
Page 67 and 68: The GrADS package is available from
Page 69 and 70: Height on pressure surface HEIGHT O
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MELTPrecipitation type (4 types) -
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Press at tropopause PRESS AT TROPOP
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RIP4RIP IntroductionRIP (which stan
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A successful compilation will resul
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iinterp = 0v v v v vH V H V h h h h
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espectively, of the centered domain
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This can be either 'h' (for hours),
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eal variable expect values that are
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of all the requested trajectories a
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Creating Vis5D Dataset with RIPVis5
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User’s Guide for the NMM Core of
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Configuration: The configure script
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This program reads the contents of
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Period - Describes communications f
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fine grid), f (forcing, how the lat
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# halo HALO_NMM_K dyn_nmm8:q2;24:t
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(http://www.mmm.ucar.edu/wrf/WG2/Ti
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User's Guide for the NMM Core of th
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2. Make sure the files listed below
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User's Guide for the NMM Core of th
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Program geogridThe purpose of geogr
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1. Define a model coarse domain and
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to GEOGRID.TBL in the geogrid direc
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the GRIB data were downloaded to th
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By this point, there is generally n
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two nests are defined to have the s
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Note: For the WRF-NMM the variables
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simulations may use a constant SST
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entire simulation domain, and data
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that lists the variables and attrib
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http://www.ecmwf.int/products/data/
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intermediate formats (metgrid/src/r
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GRIB1| Level| From | To |Param| Typ
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corresponding source grid point. Gi
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tile_x = 1200tile_y = 1200tile_z =
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1. PARENT_ID : A list of MAX_DOM in
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V -DX- H| / |DY dx DY| / |H - DX- V
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intermediate files if ungrib is to
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the index and data tiles for the da
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1. PROJECTION : A character string
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25. SCALE_FACTOR : A real value tha
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10. INTERP_MASK : The name of the f
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1. four_pt : Four-point bi-linear i
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8. search : Breadth-first search in
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19 Mixed Tundra20 Barren TundraTabl
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LU_INDEX:units = "category" ;LU_IND
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netcdf met_em.d01.2009-01-05_12:00:
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}:ISOILWATER = 14 ;:grid_id = 1 ;:p
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