WRF - Developmental Testbed Center

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may be consulted for further information.It should be noted that copygb is a flexible program that can accept several command lineoptions specifying details of how the horizontal interpolation from the native grid to theoutput grid should be performed. Complete documentation of copygb can be found inWPPV3/sorc/copygb/copygb.doc.Visualization with WPPGEMPAKThe GEMPAK utility nagrib is able to decode GRIB files whose navigation is on anynon-staggered grid. Hence, GEMPAK is able to decode GRIB files generated by theWRF Postprocessing package and plot horizontal fields or vertical cross sections.A sample script named run_wrfpostandgempak, which is included in the scriptsdirectory of the tar file, can be used to run wrfpost, copygb, and plot the following fieldsusing GEMPAK:• Sfcmap_dnn_hh.gif: mean SLP and 6 hourly precipitation• PrecipType_dnn_hh.gif: precipitation type (just snow and rain)• 850mbRH_dnn_hh.gif: 850 mb relative humidity• 850mbTempandWind_dnn_hh.gif: 850 mb temperature and wind vectors• 500mbHandVort_dnn_hh.gif: 500 mb geopotential height and vorticity• 250mbWindandH_dnn_hh.gif: 250 mb wind speed isotacs and geopotentialheightThis script can be modified to customize fields for output. GEMPAK has an online usersguide athttp://www.unidata.ucar.edu/software/gempak/help_and_documentation/manual/.In order to use the script run_wrfpostandgempak, it is necessary to set the environmentvariable GEMEXEC to the path of the GEMPAK executables. For example,setenv GEMEXEC /usr/local/gempak/binNote: For GEMPAK, the precipitation accumulation period for WRF-NMM is given bythe variable incrementhr in the run_wrfpostandgempak script.GrADSThe GrADS utilities grib2ctl.pl and gribmap are able to decode GRIB files whosenavigation is on any non-staggered grid. These utilities and instructions on how to usethem to generate GrADS control files are available from:http://www.cpc.ncep.noaa.gov/products/wesley/grib2ctl.html.WRF-NMM V3: User’s Guide 7-13
The GrADS package is available from: http://grads.iges.org/grads/grads.html.GrADS has an online User’s Guide at: http://grads.iges.org/grads/gadoc/ and a list ofbasic commands for GrADS can be found at:http://grads.iges.org/grads/gadoc/reference_card.pdf.A sample script named run_wrfpostandgrads, which is included in the scripts directoryof the WRF Postprocessing package, can be used to run wrfpost, copygb, and plot thefollowing fields using GrADS:• Sfcmaphh_dnn_GRADS.gif: mean SLP and 6-hour accumulated precipitation.• 850mbRHhh_dnn_GRADS.gif: 850 mb relative humidity• 850mbTempandWindhh_dnn_GRADS.gif: 850 mb temperature and wind vectors• 500mbHandVorthh_dnn_GRADS.gif: 500 mb geopotential heights and absolutevorticity• 250mbWindandHhh_dnn_GRADS.gif: 250 mb wind speed isotacs andgeopotential heightsIn order to use the script run_wrfpostandgrads, it is necessary to:1. Set the environmental variable GADDIR to the path of the GrADS fonts andauxiliary files. For example,setenv GADDIR /usr/local/grads/data2. Add the location of the GrADS executables to the PATH. For examplesetenv PATH /usr/local/grads/bin:$PATH3. Link script cbar.gs to the post-processor working directory. (This scripts isprovided in WPP package, and the run_wrfpostandgrads script makes a link fromscripts/ to postprd/.) To generate the plots above, GrADS script cbar.gs isinvoked. This script can also be obtained from the GrADS library of scripts athttp://grads.iges.org/grads/gadoc/library.html.Note: For GrADS, the precipitation accumulation period for WRF-NMM is plotted overthe subintervals of the tprec hour (set in namelist.input).Fields produced by wrfpostTable 3 lists basic and derived fields that are currently produced by wrfpost. Theabbreviated names listed in the second column describe how the fields should be enteredin the control file (wrf_cntrl.parm).WRF-NMM V3: User’s Guide 7-14
Page 1 and 2:
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
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
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: i. As the grid id of a pre-defined
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
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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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