WRF - Developmental Testbed Center

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By this point, there is generally no need to change any of the variables in the “share”namelist record, since those variables should have been suitably set in previous steps. Ifthe "share" namelist was not edited while running geogrid and ungrib, however, the WRFdynamical core, number of domains, starting and ending times, interval betweenmeteorological data, and path to the static domain files must be set in the “share”namelist record, as described in the steps to run geogrid and ungrib.In the “metgrid” namelist record, the path and prefix of the intermediate meteorologicaldata files must be given with fg_name, the full path and file names of any intermediatefiles containing constant fields may be specified with the constants_name variable, andthe output format for the horizontally interpolated files may be specified with theio_form_metgrid variable. Other variables in the “metgrid” namelist record, namely,opt_output_from_metgrid_path and opt_metgrid_tbl_path, allow the user tospecify where interpolated data files should be written by metgrid and where theMETGRID.TBL file may be found.As with geogrid and the GEOGRID.TBL file, a METGRID.TBL file appropriate for theWRF core must be linked in the metgrid directory (or in the directory specified byopt_metgrid_tbl_path, if this variable is set).> ls metgrid/METGRID.TBLlrwxrwxrwx 115 METGRID.TBL -> METGRID.TBL.ARWAfter suitably editing the namelist.wps file and verifying that the correct METGRID.TBLwill be used, metgrid may be run by issuing the command> ./metgrid.exeIf metgrid successfully ran, the message!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Successful completion of metgrid. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!will be printed. After successfully running, metgrid output files should appear in the WPSroot directory (or in the directory specified by opt_output_from_metgrid_path, if thisvariable was set). These files will be named met_em.d0N.YYYY-MM-DD_HH:mm:ss.nc inthe case of ARW domains, where N is the number of the nest whose data reside in the file,or met_nmm.d01.YYYY-MM-DD_HH:mm:ss.nc in the case of NMM domains. Here, YYYY-MM-DD_HH:mm:ss refers to the date of the interpolated data in each file. If these files donot exist for each of the times in the range given in the “share” namelist record, themetgrid.log file may be consulted to help in determining the problem in running metgrid.> lsdrwxr-xr-x 2-rwxr-xr-x 1-rwxr-xr-x 1-rw-r--r-- 14096 arch1672 clean3510 compile85973 compile.outputWRF-NMM V3: User’s Guide 3-11
-rwxr-xr-x 1 4257 configure-rw-r--r-- 1 2486 configure.wps-rw-r--r-- 1 154946888 FILE:2008-03-24_12-rw-r--r-- 1 154946888 FILE:2008-03-24_18-rw-r--r-- 1-rw-r--r-- 11957004 geo_em.d01.nc4745324 geo_em.d02.ncdrwxr-xr-x 4 4096 geogridlrwxrwxrwx 1-rw-r--r-- 123 geogrid.exe -> geogrid/src/geogrid.exe11169 geogrid.loglrwxrwxrwx 138 GRIBFILE.AAA -> /data/gfs/gfs_080324_12_00lrwxrwxrwx 1-rwxr-xr-x 138 GRIBFILE.AAB -> /data/gfs/gfs_080324_12_061328 link_grib.csh-rw-r--r-- 1 5217648 met_em.d01.2008-03-24_12:00:00.nc-rw-r--r-- 1-rw-r--r-- 15217648 met_em.d01.2008-03-24_18:00:00.nc12658200 met_em.d02.2008-03-24_12:00:00.ncdrwxr-xr-x 3 4096 metgridlrwxrwxrwx 1-rw-r--r-- 123 metgrid.exe -> metgrid/src/metgrid.exe65970 metgrid.log-rw-r--r-- 1 1094 namelist.wps-rw-r--r-- 1-rw-r--r-- 11987 namelist.wps.all_options1075 namelist.wps.global-rw-r--r-- 1 652 namelist.wps.nmm-rw-r--r-- 1drwxr-xr-x 44786 README4096 ungriblrwxrwxrwx 121 ungrib.exe -> ungrib/src/ungrib.exe-rw-r--r-- 1-rw-r--r-- 11418 ungrib.log27787 ungrib.outputdrwxr-xr-x 3 4096 utillrwxrwxrwx 1 33 Vtable ->ungrib/Variable_Tables/Vtable.GFSCreating Nested Domains with the WPSAt this time, the WRF-NMM supports one-way and two-way stationary and moving (ifrunning an HWRF configuration, see HWRF User’s Guide) nests. Because the WRF-NMM nesting strategy was targeted towards the the capability of moving nests, timeinvariantinformation, such as topography, soil type, albedo, etc. for a nest must beacquired over the entire domain of the coarsest grid even though, for a stationary nest,that information will only be used over the location where the nest is initialized.Running the WPS for WRF-NMM nested-domain simulations is essentially no moredifficult than running for a single-domain case; the geogrid program simply processesmore than one grid when it is run, rather than a single grid.The number of grids is unlimited. Grids may be located side by side (i.e. two nests maybe children of the same parent and located on the same nest level), or telescopicallynested. The nesting ratio for the WRF-NMM is always 3. Hence, the grid spacing of anest is always 1/3 of its parent.The nest level is dependant on the parent domain. If one nest is defined inside thecoarsest domain, the nest level will be one and one additional static file will be created. IfWRF-NMM V3: User’s Guide 3-12
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ForewordUser's Guide for the NMM Co
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• WPP Directory Structure 7-3•
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The WRF modeling system software is
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WRF-NMM FLOW CHARTTerrestrialDataMo
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Vendor Hardware OS CompilerCray X1
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If all of these executables are def
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Once the tar file is obtained, gunz
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HWRF is set, then (3) will be autom
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In addition to these three links, a
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• Real-data simulations• Non-hy
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k. Morrison double-moment scheme (1
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g. GFDL surface layer (88): (This s
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Other physics optionsa. gwd_opt: Gr
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to the convergence of meridians app
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Variable NamesValue(Example)Descrip
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Page 35 and 36:
Page 37 and 38:
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mpirun.lsf wrf.exeand for interacti
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The boundary conditions for the nes
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Examples:1. One nest and one level
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ottom_top_stag = 28 ;soil_layers_st
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float HLENSW(Time, south_north, wes
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float HBOTS(Time, south_north, west
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operational mesoscale Eta model. J.
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Mlawer, E. J., S. J. Taubman, P. D.
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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
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
Page 81 and 82: espectively, of the centered domain
Page 83 and 84: This can be either 'h' (for hours),
Page 85: eal variable expect values that are
Page 88 and 89: of all the requested trajectories a
Page 90 and 91: Creating Vis5D Dataset with RIPVis5
Page 92 and 93: User’s Guide for the NMM Core of
Page 94 and 95: Configuration: The configure script
Page 96 and 97: This program reads the contents of
Page 98 and 99: Period - Describes communications f
Page 100 and 101: fine grid), f (forcing, how the lat
Page 102 and 103: # halo HALO_NMM_K dyn_nmm8:q2;24:t
Page 104 and 105: (http://www.mmm.ucar.edu/wrf/WG2/Ti
Page 106 and 107: User's Guide for the NMM Core of th
Page 108 and 109: 2. Make sure the files listed below
Page 110 and 111: User's Guide for the NMM Core of th
Page 112 and 113: Program geogridThe purpose of geogr
Page 114 and 115: 1. Define a model coarse domain and
Page 116 and 117: to GEOGRID.TBL in the geogrid direc
Page 118 and 119: the GRIB data were downloaded to th
Page 122 and 123: two nests are defined to have the s
Page 124 and 125: Note: For the WRF-NMM the variables
Page 126 and 127: simulations may use a constant SST
Page 128 and 129: entire simulation domain, and data
Page 130 and 131: that lists the variables and attrib
Page 132 and 133: http://www.ecmwf.int/products/data/
Page 134 and 135: intermediate formats (metgrid/src/r
Page 136 and 137: GRIB1| Level| From | To |Param| Typ
Page 138 and 139: corresponding source grid point. Gi
Page 140 and 141: tile_x = 1200tile_y = 1200tile_z =
Page 142 and 143: 1. PARENT_ID : A list of MAX_DOM in
Page 144 and 145: V -DX- H| / |DY dx DY| / |H - DX- V
Page 146 and 147: intermediate files if ungrib is to
Page 148 and 149: the index and data tiles for the da
Page 150 and 151: 1. PROJECTION : A character string
Page 152 and 153: 25. SCALE_FACTOR : A real value tha
Page 154 and 155: 10. INTERP_MASK : The name of the f
Page 156 and 157: 1. four_pt : Four-point bi-linear i
Page 158 and 159: 8. search : Breadth-first search in
Page 160 and 161: 19 Mixed Tundra20 Barren TundraTabl
Page 162 and 163: LU_INDEX:units = "category" ;LU_IND
Page 164 and 165: netcdf met_em.d01.2009-01-05_12:00:
Page 166: }:ISOILWATER = 14 ;:grid_id = 1 ;:p
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WRF - Developmental Testbed Center

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