WRF ARW User's Guide - MMM - UCAR

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UTILITIES AND TOOLS v_interp This utility can be used to add vertical levels in WRF-ARW netCDF input. An example of the usage would be one-way nesting via program ndown. Since program ndown does not do ‘vertical nesting’, namely adding vertical levels, this program can be used after running ndown to achieve the same results. Obtain the v_interp utility from the WRF Download page (http://www.mmm.ucar.edu/wrf/users/download/get_source.html) Compile The code should be easily built and run on any machine with a netCDF library. To compile the code, use the compile flags shown at the top of the utility program. e.g., for a LINUX machine you may type: pgf90 v_interp.f -L/usr/local/netcdf/lib \ -lnetcdf -I/usr/local/netcdf/include \ -Mfree -o v_interp If successful, this will create the executable: v_interp Run Edit the namelist file namelist.v_interp (see namelist options below) for the number of new vertical levels (nvert) and the new set of levels (nlevels). To find out the existing model levels, check the original WRF namelist.input file used to create the input files, or type the following: ncdump –v ZNW wrfinput_d01 The executable takes two arguments on the command line: ./v_interp file file_new where file is the input file you want to add the vertical levels to, and file_new is the output file that contains more vertical levels. To run the program for wrfinput file, type WRF-ARW V3: User’s Guide 10-10
./v_interp wrfinput_d01 wrfinput_d01_new For wrfbdy file, type namelists: ./v_interp wrfbdy_d01 wrfbdy_d01_new &newlevels nvert Number of new vertical levels (statggered) nlevels Values of new model levels Program Notes: UTILITIES AND TOOLS When adding vertical levels, please keep the first and the last half levels the same as in the input file itself. Problem may occur if levels are added outside the range. For wrfbdy file, please keep the input file name as wrfbdy_* since the program keys on the file name in order to do the interpolation for special bdy arrays. WRF-ARW V3: User’s Guide 10-11
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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
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Table of Contents • Introduction
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POST-PROCESSING It runs on many dif
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; load functions and procedures loa
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3. Create an NCL plotting script. 4
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POST-PROCESSING Resources unique to
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POST-PROCESSING If you want to add
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wrf_user_ll_to_ij (nc_file, lons, l
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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
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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: &tc insert_bogus_storm = .true. rem
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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