WRF - Developmental Testbed Center

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Table of ContentsUser's Guide for the NMM Core of theWeather Research and Forecast (WRF)Modeling System Version 3Chapter 7: Post Processing UtilitiesNCEP WRF Post Processor (WPP)• WPP Introduction• WPP Required Software• Obtaining the WPP Code• WPP Directory Structure• Installing the WPP Code• WPP Functionalities• Computational Aspects and Supported Platforms for WPP• Setting up the WRF model to interface with WPP• WPP Control File Overviewo Controlling which variables wrfpost outputso Controlling which levels wrfpost outputs• Running WPPo Overview of the steps in scripts to run WPP• Visualization with WPPo GEMPAKo GrADS• Fields Produced by wrfpostRIP4• RIP Introduction• RIP Software Requirements• RIP Environment Settings• Obtaining the RIP Code• RIP Directory Structure• Installing the RIP Code• RIP Functionalities• RIP Data Preparation (RIPDP)o RIPDP Namelisto Running RIPDP• RIP User Input File (UIF)• Running RIPo Calculating and Plotting Trajectories with RIPo Creating Vis5D Datasets with RIPWRF-NMM V3: User’s Guide 7-1
NCEP WRF Postprocessor (WPP)WPP IntroductionThe NCEP WRF Postprocessor was designed to interpolate both WRF-NMM and WRF-ARW output from their native grids to National Weather Service (NWS) standard levels(pressure, height, etc.) and standard output grids (AWIPS, Lambert Conformal, polarstereographic,etc.) in NWS and World Meteorological Organization (WMO) GRIBformat. This package also provides an option to output fields on the model’s nativevertical levels.The adaptation of the original WRF Postprocessor package and User’s Guide (by MikeBaldwin of NSSL/CIMMS and Hui-Ya Chuang of NCEP/EMC) was done by LígiaBernardet (NOAA/ESRL/DTC) in collaboration with Dusan Jovic (NCEP/EMC), RobertRozumalski (COMET), Wesley Ebisuzaki (NWS/HQTR), and Louisa Nance(NCAR/DTC). Upgrades to WRF Postprocessor versions 2.2 and higher were performedby Hui-Ya Chuang and Dusan Jovic (NCEP/EMC).WPP Software RequirementsThe WRF Postprocessor requires the same Fortran and C compilers used to build theWRF model. In addition to the netCDF library, the WRF I/O API libraries, which areincluded in the WRF model tar file, are also required.The WRF Postprocessor has some visualization scripts included to create graphics usingeither GrADS (http://grads.iges.org/grads/grads.html) or GEMPAK(http://www.unidata.ucar.edu/software/gempak/index.html). These packages are not partof the WPP installation and would need to be installed.Obtaining the WPP CodeThe WRF Postprocessor package can be downloaded from: http://www.dtcenter.org/wrfnmm/users/downloads/.Note: Always obtain the latest version of the code if youa re not trying to conitue a preexistingproject. WPPV3 is just used as an example here.Once the tar file is obtained, gunzip and untar the file.tar –zxvf WPPV3.tar.gzThis command will create a directory called WPPV3.WRF-NMM V3: User’s Guide 7-2
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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 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: Mlawer, E. J., S. J. Taubman, P. D.
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
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
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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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