WRF - Developmental Testbed Center

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The WRF-NMM code contains an initialization program (real_nmm.exe; see Chapter 4)and a numerical integration program (wrf.exe; see Chapter 5).WRF Postprocessor (WPP)This program can be used to post-process both WRF-ARW and WRF-NMM forecastsand was designed to:• Interpolates the forecasts from the model’s native vertical coordinate to NWSstandard output levels.• Destaggers the forecasts from the staggered native grid to a regular non-staggeredgrid.• Computes diagnostic output quantities.• Outputs the results in NWS and WMO standard GRIB1.(For more details, see Chapter 7.)RIPThis program can be used to plot both WRF-ARW and WRF-NMM forecasts. Somebasic features include:• Uses a preprocessing program to read model output and convert this data intostandard RIP format data files.• Makes horizontal plots, vertical cross sections and skew-T/log p soundings.• Calculates and plots backward and forward trajectories.• Makes a data set for use in the Vis5D software package.(For more details, see Chapter 7.)Model Evaluation Tools (MET)This verification package can be used to evaluate both WRF-ARW and WRF-NMMforecasts with the following techniques:• Standard verification scores comparing gridded model data to point-basedobservations• Standard verification scores comparing gridded model data to griddedobservations• Object-based verification method comparing gridded model data to griddedobservationsMET is developed and supported by the Developmental Testbed Center and full detailscan be found on the MET User’s site at: http://www.dtcenter.org/met/users.WRF-NMM V3: User’s Guide 1-3
WRF-NMM FLOW CHARTTerrestrialDataModel Data:NAM (Eta),GFS, NNRP, …WPSgeo_nmm_nest…met_nmm.d01…real_nmm.exe(Real data initialization)wrfinput_d01wrfbdy_d01WRF-NMM Corewrfout_d01…wrfout_d02…(Output in netCDF)WPP(GrADS, GEMPAK)RIPMETFigure 1: WRF-NMM flow chart for Version 3.WRF-NMM V3: User’s Guide 1-4
Page 1 and 2: ForewordUser's Guide for the NMM Co
Page 3 and 4: • WPP Directory Structure 7-3•
Page 5: The WRF modeling system software is
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 and 20: • Real-data simulations• Non-hy
Page 21 and 22: k. Morrison double-moment scheme (1
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
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./configureYou will be given a list
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equested output field. If the pre-r
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RAINCV SNOW HBOTRAINNCVSNOWCNote: F
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Running WPPFour scripts for running
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i. As the grid id of a pre-defined
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The GrADS package is available from
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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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WRF - Developmental Testbed Center

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