WRF ARW User's Guide - MMM - UCAR

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POST-PROCESSING Users of VAPOR on NCAR visualization systems should contact dasg@ucar.edu for support. Users are encouraged to provide feedback. Questions, problems, bugs etc. should be reported to vapor@ucar.edu. The VAPOR development priorities are set by users as well as by the VAPOR steering committee, a group of turbulence researchers who are interested in improving the ability to analyze and visualize time-varying simulation results. Post a feature request to the VAPOR SourceForge website (http://sourceforge.net/projects/vapor), or e-mail vapor@ucar.edu if you have requests or suggestions about improving VAPOR capabilities. Basic steps for using VAPOR to visualize WRF-ARW data 1. Install VAPOR VAPOR installers for Windows, Macintosh and Linux are available on the VAPOR download page, http://www.vapor.ucar.edu/download. For most users, a binary installation is fine. Installation instructions are also provided in the VAPOR documentation pages, http://www.vapor.ucar.edu/docs/install. After VAPOR is installed, it is necessary to perform user environment setup on Unix or Mac, before executing any VAPOR software. These setup instructions are provided on the VAPOR binary install documentation pages, http://www.vapor.ucar.edu/docs/install. 2. Convert WRF output data to VAPOR This process is described in detail in the VAPOR/WRF Data and Image Preparation Guide, http://www.vapor.ucar.edu/docs/usage/wrfprep/WRFsupport.pdf. VAPOR datasets consist of (1) a metadata file (file type .vdf) that describes an entire VAPOR data collection, and (2) a directory of multi-resolution data files where the actual data is stored. The metadata file is created by the command wrfvdfcreate, and the multi-resolution data files are written by the command wrf2vdf. The simplest way to create a VAPOR data collection is as follows: First issue the command: wrfvdfcreate wrf_files metadata_file.vdf where: wrf_files is a list of one or more wrf output files that you want to use. metadata_file.vdf is the name that you will use for your metadata file. WRF-ARW V3: User’s Guide 9-52
POST-PROCESSING For example, if the entire data is in one wrfout d02 file one could issue the following command to create the metadata file "wrfout.vdf":: wrfvdfcreate wrfout_d02_2006-10-25_18_00_00 wrfout.vdf Then, to actually convert the data, issue the command: wrf2vdf metadata_file.vdf wrf_files using the same arguments (in reversed order) as you used with wrfvdfcreate. Note that wrf2vdf does most of the work, and may take a few minutes to convert a large WRF dataset. After issuing the above commands, all of the 2D and 3D variables on the spatial grid in the specified WRF output files will be converted, for all the time steps in the files. If you desire more control over the conversion process, there are many additional options that you can provide to wrfvdfcreate and wrf2vdf. Type the command with the argument “-help” to get a short-listing of the command usage. All data conversion options are detailed in section 1 of the VAPOR/WRF Data and Image Preparation Guide (http://www.vapor.ucar.edu/docs/usage/wrfprep/WRFsupport.pdf). Some of the options include: - Calculation of derived variables such as vertical vorticity, temperature in Kelvin, normalized pressure, wind velocity. - Overriding default volume dimensions and/or spatial extents. - Converting only a subset of the WRF output time steps - Converting a specific collection of variables. 4. Visualize the WRF data From the command line, issue the command “vaporgui”, or double-click the VAPOR desktop icon (on Windows or Mac). This will launch the VAPOR user interface. From the Data menu, choose “Load a dataset into default session”, and select the metadata file that you associated with your converted WRF data. WRF-ARW V3: User’s Guide 9-53
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1. Overview − Introduction ......
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8. WRF Software − Introduction ..
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Table of Contents Chapter 1: Overvi
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OVERVIEW • Map projections for 1)
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Table of Contents Chapter 2: Softwa
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SOFTWARE INSTALLATION Note 1: If on
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Building the WRF Code SOFTWARE INST
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Building the WRF-Var Code SOFTWARE
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Chapter 3: WRF Preprocessing System
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WPS information specified by the us
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Required Libraries The only library
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ls drwxr-xr-x 2 4096 arch -rwxr-xr-
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should be written to may be indicat
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WPS When configuring a rotated lati
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WPS geog_data_path variable. Also,
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WPS supplied with Vtable files for
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&share wrf_core = 'ARW', max_dom =
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&share wrf_core = 'ARW', max_dom =
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that the MODIS-based categories sho
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should be set to a list of prefixes
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WPS If no field is found in more th
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WPS Output from the ungrib program
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5 19121.152344 0.093761623 6 19371.
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WPS ! 0 = cylindrical equidistant !
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The meanings of the level fields ar
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not possible to write a geogrid bin
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Description of the Namelist Variabl
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3. I_PARENT_START : A list of MAX_D
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21. POLE_LON : For the latitude-lon
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2. PRIORITY : An integer specifying
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Default value is null (i.e., no dom
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17. TILE_Y : An integer specifying
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5. FROM_INPUT : A character string
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21. FLAG_IN_OUTPUT : A character st
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6. wt_average_16pt : Weighted sixte
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Table 2: IGBP-Modified MODIS 20-cat
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float MAPFAC_MY(Time, south_north,
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:corner_lons = -93.64893f, -92.3966
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:SOUTH-NORTH_PATCH_END_UNSTAG = 60
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Table of Contents Chapter 4: WRF In
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INITIALIZATION programs should be r
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INITIALIZATION o Symmetric north an
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INITIALIZATION • Link the WPS fil
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Table of Contents Chapter 5: WRF Mo
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MODEL Hint: If using netCDF-4, make
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Enter appropriate options that are
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. Real-data case For a real-data ca
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MODEL eta_levels: model eta levels
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estart file named wrfrst_d_ will be
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Real Data Cases MODEL For real-data
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MODEL The purpose of this step is t
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f. Moving-Nested Run MODEL Two type
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MODEL Spectral Nudging is a new upp
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MODEL data and update these fields.
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MODEL If the model did not run to c
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2.1 Longwave Radiation (ra_lw_physi
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MODEL km_opt = 2 or 3, see below. A
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MODEL b. Vertical velocity damping
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MODEL The value of relax_zone may b
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MODEL cycling F whether this run is
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MODEL max_dom 1 number of domains -
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MODEL when SKINTEMP is not present.
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MODEL 0 no action taken, no adjustm
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MODEL 3 NCEP GFS scheme (NMM only),
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MODEL 5-layer slab scheme, set to l
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MODEL if_zfac_ph (max_dom) 0 0= nud
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MODEL obs_prt_freq (max_dom)10 freq
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MODEL recommended, except for highl
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&grib2 MODEL background_proc_id 255
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MODEL &tc controls for tc_em.exe on
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float Q2(Time, south_north, west_ea
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E:units = "s-1" ; float SINALPHA(Ti
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map_proj = 1: Lambert Conformal Lis
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Table of Contents Chapter 6: WRF-Va
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WRF-VAR WARNING: It is impossible t
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14. Darwin (MACOS) g95 with gcc (dm
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gzip -cd WRFNL3.1_PATCH.tar.gz | ta
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WRF-VAR Before running obsproc.exe,
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WRF-VAR There is an alternative way
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Observations Background Error Stati
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WRF-VAR / &wrfvar16 / &wrfvar17 / &
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Total number of obs. = 26726 Final
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ln -fs ad/ad_d01_2008-02-05_12:00:0
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WRF-VAR > ln -sf WRFDA/var/run/VARB
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WRF-VAR RTMINIT_NSENSOR = 12 # 5 AM
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WRF-VAR tions are present to keep t
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6: U.S. Standard Atmosphere WRF-VAR
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WRF-VAR clwp: cloud liquid water pa
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WRF-VAR and/or low boundary conditi
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WRF-VAR Note: Larger analysis incre
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WRF-VAR The variance of each variab
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Additional WRF-Var Exercises: (a) S
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You may like to compare various dia
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WRF-VAR thin_mesh_conv 20. for ob_f
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WRF-VAR &wrfvar7 cv_options 5 3: NC
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WRF-VAR warnings_are_fatal false cl
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WRF-VAR use_antcorr false (max_inst
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'v' = Y-direction component of wind
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WRF-VAR obs_gpspw_read.diag print_r
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write_satem If keep satem obs in ob
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Table of Contents Chapter 7: Object
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OBSGRID • Provide surface fields
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Banana Scheme OBSGRID In analyses o
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Objective Analysis on Model Nests O
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Check your output OBSGRID Examine t
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OBSGRID • All reports for each se
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Each report in the wrf_obs/little_r
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OBSGRID The end data record is simp
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OBSGRID remove_data_above_qc_flag 2
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Namelist Variable Value Description
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Namelist record8 OBSGRID The data i
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Chapter 8: WRF Software Table of Co
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SOFTWARE variable like MPICH_F90 to
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SOFTWARE time configuration options
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SOFTWARE While the model state and
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SOFTWARE u_gc. It is a three dimens
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Registry Rconfig: SOFTWARE The Regi
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SOFTWARE The parallel communication
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WRF source modules and subroutines
Page 241 and 242: Table of Contents • Introduction
Page 243 and 244: POST-PROCESSING It runs on many dif
Page 245 and 246: ; load functions and procedures loa
Page 247 and 248: 3. Create an NCL plotting script. 4
Page 249 and 250: POST-PROCESSING Resources unique to
Page 251 and 252: POST-PROCESSING If you want to add
Page 253 and 254: wrf_user_ll_to_ij (nc_file, lons, l
Page 255 and 256: NCL built-in Functions POST-PROCESS
Page 257 and 258: POST-PROCESSING Add the markers NCL
Page 259 and 260: RIP4 POST-PROCESSING RIP (which sta
Page 261 and 262: POST-PROCESSING Will use NETCDF in
Page 263 and 264: The RIP user input file POST-PROCES
Page 265 and 266: Plot Specification Table POST-PROCE
Page 267 and 268: e.g. idt rip_sample.cgm POST-PROCES
Page 269 and 270: POST-PROCESSING • gribinfo.txt &
Page 271 and 272: POST-PROCESSING plot ‘all’ Whic
Page 273 and 274: POST-PROCESSING User will be prompt
Page 275 and 276: WPP POST-PROCESSING The NCEP WRF Po
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Page 279 and 280: POST-PROCESSING pressure fields on
Page 281 and 282: POST-PROCESSING • When using the
Page 283 and 284: POST-PROCESSING 7. Create namelist
Page 285 and 286: 2. Add the location of the GrADS ex
Page 287 and 288: POST-PROCESSING Column integrated c
Page 289 and 290: POST-PROCESSING Direct soil evapora
Page 291: POST-PROCESSING • Animation Contr
Page 295 and 296: 5. Read the VAPOR Documentation POS
Page 297 and 298: Table of Contents • Introduction
Page 299 and 300: UTILITIES AND TOOLS -ts Generate ti
Page 301 and 302: iowrf UTILITIES AND TOOLS This util
Page 303 and 304: fields List of fields to process. d
Page 305 and 306: &tc insert_bogus_storm = .true. rem
Page 307 and 308: ./v_interp wrfinput_d01 wrfinput_d0
Page 309 and 310: Design WRF model domains WPS/util/p
Page 311 and 312: GRIB data UTILITIES AND TOOLS ncrca
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WRF ARW User's Guide - MMM - UCAR

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