WRF - Developmental Testbed Center

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Variable NamesValue(Example)Descriptiondebug_level 0 Control for amount of debug printouts0 - for standard runs, no debugging.1 - netcdf error messages about missing fields.50,100,200,300 values give increasing prints.Large values trace the job's progress throughphysics and time steps.&Domainstime_step18Domain definitionTime step for integration of coarsest grid ininteger secondstime_step_fract_num 0 Numerator for fractional coarse grid time steptime_step_fract_den 1 Denominator for fractional coarse grid time step.Example, if you want to use 60.3 sec as yourtime step, set time_step=60,time_step_fract_num=3, andtime_step_fract_den=10max_dom 1 Number of domains (1 for a single grid, >1 fornests)s_we (max_dom) 1 Start index in x (west-east) direction (leave asis)e_we (max_dom) 124 End index in x (west-east) direction (staggereddimension)s_sn (max_dom) 1 Start index in y (south-north) direction (leave asis)e_sn (max_dom) 62 End index in y (south-north) direction(staggered dimension). For WRF-NMM thisvalue must be even.s_vert (max_dom) 1 Start index in z (vertical) direction (leave as is)e_vert (max_dom) 61 End index in z (vertical) direction (staggereddimension). Note: This parameter refers to fulllevels including surface and top.dx (max_dom) .0534521 Grid length in x direction, units in degrees forWRF-NMM.dy (max_dom) .0526316 Grid length in y direction, units in degrees forWRF-NMM.p_top_requested 5000 P top used in the model (Pa); must be availablein WPS dataWRF-NMM V3: User’s Guide 5-13
Variable NamesValue(Example)Descriptionptsgm 42000. Pressure level (Pa) in which the WRF-NMMhybrid coordinate transitions from sigma topressureeta_levels 1.00, 0.99,…0.00Model eta levels. If this is not specifiedreal_nmm.exe will provide a set of levels.num_metgrid_levels 40 Number of vertical levels in the incoming data:type ncdump –h to find outgrid_id (max_dom) 1 Domain identifier.parent_id (max_dom) 0 ID of the parent domain. Use 0 for the coarsestgrid.i_parent_start (max_dom) 1j_parent_start (max_dom) 1parent_grid_ratio(max_dom)parent_time_step_ratio(max_dom)Defines the LLC of the nest as this I-index ofthe parent domain. Use 1 for the coarsest grid.Defines the LLC of the nest in this J-index ofthe parent domain. Use 1 for the coarsest grid.3 Parent-to-nest domain grid size ratio. For WRF-NMM this ratio must be 3.3 Parent-to-nest time step ratio. For WRF-NMMthis ratio must be 3.feedback 1 Feedback from nest to its parent domain; 0 = nofeedbacknum_moves -99 Vortex following moving nest is enabled whennum_moves=-99. This flag is only for theHWRF configuration.tile_sz_x 0 Number of points in tile x direction.tile_sz_y 0 Number of points in tile y direction.numtiles 1 Number of tiles per patch (alternative to abovetwo items).nproc_x -1 Number of processors in x–direction fordecomposition.nproc_y -1 Number of processors in y-direction fordecomposition:If -1: code will do automatic decomposition.If >1 for both: will be used for decomposition.&physicsPhysics optionschem_opt 0 Chemistry option - not yet availableWRF-NMM V3: User’s Guide 5-14
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 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: Variable NamesValue(Example)Descrip
Page 33 and 34: 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
Page 71 and 72: MELTPrecipitation type (4 types) -
Page 73 and 74: Press at tropopause PRESS AT TROPOP
Page 75 and 76: RIP4RIP IntroductionRIP (which stan
Page 77 and 78: A successful compilation will resul
Page 79 and 80: 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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