WRF ARW User's Guide - MMM - UCAR

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WRF-VAR -rwxr-xr-x 1 noname users 1938732 Mar 23 09:29 var/build/gen_be_stage4_regional.exe -rwxr-xr-x 1 noname users 1752352 Mar 23 09:29 var/obsproc/src/obsproc.exe da_wrfvar.exe is the main executable for running WRF-Var. Make sure it is created after the compilation. Sometimes (unfortunately) it is possible that other utilities get successfully compiled, while the main da_wrfvar.exe fails; please check the compilation log file carefully to figure out the problem. The basic gen_be utility for regional model consists of gen_be_stage0_wrf.exe, gen_be_stage1.exe, gen_be_stage2.exe, gen_be_stage2a.exe, gen_be_stage3.exe, gen_be_stage4_regional.exe, and gen_be_diags.exe. da_updated_bc.exe is used for updating WRF boundary condition after a new WRF- Var analysis is generated. da_advance_time.exe is a very handy and useful tool for date/time manipulation. Type “da_advance_time.exe” to see its usage instruction. In addition to the executables for running WRF-Var and gen_be, obsproc.exe (the executable for preparing conventional data for WRF-Var) compilation is also included in “./compile all_wrfvar”. Installing WRFNL and WRFPLUS (For 4D-Var only) If you intend to run WRF 4D-Var, it is necessary to have installed the WRFNL (WRF nonlinear model) and WRFPLUS (WRF adjoint and tangent linear model). WRFNL is a modified version of WRF V3.1 and can only be used for 4D-Var purposes. WRFPLUS contains the adjoint and tangent linear models based on a simplified WRF model, which only includes some simple physical processes such as vertical diffusion and large-scale condensation. To install WRFNL: • Get the WRF zipped tar file from: http://www.mmm.ucar.edu/wrf/users/download/get_source.html • Unzip and untar the file , name the directory WRFNL > cd WRFNL > gzip -cd WRFV3.TAR.gz | tar -xf - ; mv WRFV3 WRFNL • Get the WRFNL patch zipped tar file from: http://www.mmm.ucar.edu/wrf/users/wrfda/download/wrfnl.html • unzip and untar the WRFNL patch file WRF-ARW V3: User’s Guide 6-6
gzip -cd WRFNL3.1_PATCH.tar.gz | tar -xf - > ./configure serial means single processor dmpar means Distributed Memory Parallel (MPI) smpar is not supported for 4D-Var Please select 0 for the second option for no nesting • Compile the WRFNL > ./compile em_real > ls -ls main/*.exe If you built the real-data case, you should see wrf.exe To install WRFPLUS: • Get the WRFPLUS zipped tar file from: http://www.mmm.ucar.edu/wrf/users/wrfda/download/wrfplus.html • Unzip and untar the file to WRFPLUS > gzip -cd WRFPLUS3.1.tar.gz | tar -xf - > cd WRFPLUS > ./configure wrfplus serial means single processor dmpar means Distributed Memory Parallel (MPI) Note: wrfplus was tested on following platforms: IBM AIX: xlfrte 11.1.0.5 Linux : pgf90 6.2-5 64-bit target on x86-64 Linux Mac OS (Intel) : g95 0.91! Note: wrfplus does not support: Linux: Intel compiler V9.1 (not sure for higher versions, WRFPLUS can not be compiled with old version) Linux : gfortran (The behavior of WRFPLUS is strange) • Compile WRFPLUS > ./compile wrf > ls -ls main/*.exe You should see wrfplus.exe Running Observation Preprocessor (OBSPROC) WRF-VAR The OBSPROC program reads observations in LITTLE_R format (a legendary ASCII format, in use since MM5 era). Please refer to the documentation at http://www.mmm.ucar.edu/mm5/mm5v3/data/how_to_get_rawdata.html for LITTLE_R format description. For your applications, you will have to prepare your own observation WRF-ARW V3: User’s Guide 6-7
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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
Page 103 and 104: MODEL The purpose of this step is t
Page 105 and 106: f. Moving-Nested Run MODEL Two type
Page 107 and 108: MODEL Spectral Nudging is a new upp
Page 109 and 110: MODEL data and update these fields.
Page 111 and 112: MODEL If the model did not run to c
Page 113 and 114: 2.1 Longwave Radiation (ra_lw_physi
Page 115 and 116: MODEL km_opt = 2 or 3, see below. A
Page 117 and 118: MODEL b. Vertical velocity damping
Page 119 and 120: MODEL The value of relax_zone may b
Page 121 and 122: MODEL cycling F whether this run is
Page 123 and 124: MODEL max_dom 1 number of domains -
Page 125 and 126: MODEL when SKINTEMP is not present.
Page 127 and 128: MODEL 0 no action taken, no adjustm
Page 129 and 130: MODEL 3 NCEP GFS scheme (NMM only),
Page 131 and 132: MODEL 5-layer slab scheme, set to l
Page 133 and 134: MODEL if_zfac_ph (max_dom) 0 0= nud
Page 135 and 136: MODEL obs_prt_freq (max_dom)10 freq
Page 137 and 138: MODEL recommended, except for highl
Page 139 and 140: &grib2 MODEL background_proc_id 255
Page 141 and 142: MODEL &tc controls for tc_em.exe on
Page 143 and 144: float Q2(Time, south_north, west_ea
Page 145 and 146: E:units = "s-1" ; float SINALPHA(Ti
Page 147 and 148: map_proj = 1: Lambert Conformal Lis
Page 149 and 150: Table of Contents Chapter 6: WRF-Va
Page 151 and 152: WRF-VAR WARNING: It is impossible t
Page 153: 14. Darwin (MACOS) g95 with gcc (dm
Page 157 and 158: WRF-VAR Before running obsproc.exe,
Page 159 and 160: WRF-VAR There is an alternative way
Page 161 and 162: Observations Background Error Stati
Page 163 and 164: WRF-VAR / &wrfvar16 / &wrfvar17 / &
Page 165 and 166: Total number of obs. = 26726 Final
Page 167 and 168: ln -fs ad/ad_d01_2008-02-05_12:00:0
Page 169 and 170: WRF-VAR > ln -sf WRFDA/var/run/VARB
Page 171 and 172: WRF-VAR RTMINIT_NSENSOR = 12 # 5 AM
Page 173 and 174: WRF-VAR tions are present to keep t
Page 175 and 176: 6: U.S. Standard Atmosphere WRF-VAR
Page 177 and 178: WRF-VAR clwp: cloud liquid water pa
Page 179 and 180: WRF-VAR and/or low boundary conditi
Page 181 and 182: WRF-VAR Note: Larger analysis incre
Page 183 and 184: WRF-VAR The variance of each variab
Page 185 and 186: Additional WRF-Var Exercises: (a) S
Page 187 and 188: You may like to compare various dia
Page 189 and 190: WRF-VAR thin_mesh_conv 20. for ob_f
Page 191 and 192: WRF-VAR &wrfvar7 cv_options 5 3: NC
Page 193 and 194: WRF-VAR warnings_are_fatal false cl
Page 195 and 196: WRF-VAR use_antcorr false (max_inst
Page 197 and 198: 'v' = Y-direction component of wind
Page 199 and 200: WRF-VAR obs_gpspw_read.diag print_r
Page 201 and 202: write_satem If keep satem obs in ob
Page 203 and 204: 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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NCL built-in Functions POST-PROCESS
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POST-PROCESSING Add the markers NCL
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RIP4 POST-PROCESSING RIP (which sta
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POST-PROCESSING Will use NETCDF in
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The RIP user input file POST-PROCES
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Plot Specification Table POST-PROCE
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e.g. idt rip_sample.cgm POST-PROCES
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POST-PROCESSING • gribinfo.txt &
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POST-PROCESSING plot ‘all’ Whic
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POST-PROCESSING User will be prompt
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WPP POST-PROCESSING The NCEP WRF Po
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./configure You will be given a lis
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POST-PROCESSING pressure fields on
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POST-PROCESSING • When using the
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POST-PROCESSING 7. Create namelist
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2. Add the location of the GrADS ex
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POST-PROCESSING Column integrated c
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POST-PROCESSING Direct soil evapora
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POST-PROCESSING • Animation Contr
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POST-PROCESSING For example, if the
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5. Read the VAPOR Documentation POS
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Table of Contents • Introduction
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UTILITIES AND TOOLS -ts Generate ti
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iowrf UTILITIES AND TOOLS This util
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fields List of fields to process. d
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&tc insert_bogus_storm = .true. rem
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./v_interp wrfinput_d01 wrfinput_d0
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Design WRF model domains WPS/util/p
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GRIB data UTILITIES AND TOOLS ncrca
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