WRF ARW User's Guide - MMM - UCAR

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POST-PROCESSING Examples of plots created for both idealized and real cases are available from: http://www.mmm.ucar.edu/wrf/users/graphics/ARWpost/ARWpost.htm Trouble Shooting The code executes correctly, but you get "NaN" or "Undefined Grid" for all fields when displaying the data. Look in the .ctl file. a) If the second line is: options byteswapped Remove this line from your .ctl file and try to display the data again. If this SOLVES the problem, you need to remove the -Dbytesw option from configure.arwp b) If the line below does NOT appear in your .ctl file: options byteswapped ADD this line as the second line in the .ctl file. Try to display the data again. If this SOLVES the problem, you need to ADD the -Dbytesw option for configure.arwp The line "options byteswapped" is often needed on some computers (DEC alpha as an example). It is also often needed if you run the converter on one computer and use another to display the data. Vis5D For general information about working with Vis5D, view the Vis5D home page: http://www.ssec.wisc.edu/~billh/vis5d.html WRF-ARW V3: User’s Guide 9-34
WPP POST-PROCESSING The 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) GRIB format. This package also provides an option to output fields on the model’s native vertical levels. The adaptation of the original WRF Postprocessor package and User’s Guide (by Mike Baldwin of NSSL/CIMMS and Hui-Ya Chuang of NCEP/EMC) was done by Lígia Bernardet (NOAA/ESRL/DTC) in collaboration with Dusan Jovic (NCEP/EMC), Robert Rozumalski (COMET), Wesley Ebisuzaki (NWS/HQTR), and Louisa Nance (NCAR/DTC). Upgrades to WRF Postprocessor versions 2.2 and higher were performed by Hui-Ya Chuang and Dusan Jovic (NCEP/EMC). This document will mainly deal with running the WPP package for the WRF-ARW modeling system. For details on running the package for the WRF-NMM system, please refer to the WRF-NMM User’s Guide (http://www.dtcenter.org/wrfnmm/users/docs/user_guide/V3/index.htm). Necessary software The WRF Postprocessor requires the same Fortran and C compilers used to build the WRF model. In addition to the netCDF library, the WRF I/O API libraries, which are included in the WRF model tar file, are also required. The WRF Postprocessor has some visualization scripts included to create graphics using either GrADS (http://grads.iges.org/home.html) or GEMPAK (http://my.unidata.ucar.edu/content/software/gempak/index.html). These packages are not part of the WPP installation and would need to be installed. The WRF Postprocessor package can be downloaded from: http://www.dtcenter.org/wrfnmm/users/downloads/ Note: Always obtain the latest version of the code if you are not trying to continue a preexisting project. WPPV3 is just used as an example here. Once the tar file is obtained, gunzip and untar the file. tar –xvf WPPV3.tar.gz WRF-ARW V3: User’s Guide 9-35
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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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Page 225 and 226: Chapter 8: WRF Software Table of Co
Page 227 and 228: SOFTWARE variable like MPICH_F90 to
Page 229 and 230: SOFTWARE time configuration options
Page 231 and 232: SOFTWARE While the model state and
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Page 235 and 236: Registry Rconfig: SOFTWARE The Regi
Page 237 and 238: SOFTWARE The parallel communication
Page 239 and 240: 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
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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 and 292: POST-PROCESSING • Animation Contr
Page 293 and 294: POST-PROCESSING For example, if the
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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