WRF ARW User's Guide - MMM - UCAR

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WRF-VAR Note: Make sure that you removed first two lines (header) in cost_fn and grad_fn before you plot. Also you need to specify the directory name for these two files. gts_omb_oma_01: It contains (in ASCII format) information on all of the observations used by the WRF-Var run. Each observation has its observed value, quality flag, observation error, observation minus background (OMB), and observation minus analysis (OMA). This information is very useful for both analysis and forecasts verification purposes. namelist.input: This is the WRF-Var input namelist file, which contains all the user defined non-default options. Any namelist defined options that do not appear in this file, should have their names checked against values in WRFDA/Registry/Registry.wrfvar. namelist.output: A consolidated list of all the namelist options used. rsl*: Files containing information of standard WRF-Var output from individual processors when multiple processors are used. It contains host of information on number of observations, minimization, timings etc. Additional diagnostics may be printed in these files by including various “print” WRF-Var namelist options. To learn more about these additional “print” options, search “print_” string in WRFDA/Registry/Registry.wrfvar. statistics: Text file containing OMB (OI), OMA (OA) statistics (minimum, maximum, mean and standard deviation) for each observation type and variable. This information is very useful in diagnosing how WRF-Var has used different components of the observing system. Also contained are the analysis minus background (A-B) statistics i.e. statistics of the analysis increments for each model variable at each model level. This information is very useful in checking the range of analysis increment values found in the analysis, and where they are in the WRF-model grid space. The WRF-Var analysis file is wrfvar_output. It is in WRF (NetCDF) format. It will become the input file “wrfinput_d01” of any subsequent WRF runs after lateral boundary WRF-ARW V3: User’s Guide 6-30
WRF-VAR and/or low boundary conditions are updated by another WRF-Var utility (See section “Updating WRF boundary conditions”). A NCL script WRFDA/var/graphics/ncl/WRF-Var_plot.ncl, is provided for plotting. You need to specify the analsyis_file name, its full path etc. Please see the in-line comments in the script for details. As an example, if you are aiming to display U-component of the analysis at level 18, execute following command after modifying the script “WRFDA/var/graphcs/ncl/WRF- Var_plot.ncl”, make sure following piece of codes are uncommented: var = "U" fg = first_guess->U an = analysis->U plot_data = an When you execute the following command from WRFDA/var/graphics/ncl. > ncl WRF-Var_plot.ncl The plot should look like: You may change the variable name, level etc in this script to display the variable of your choice at the desired eta level. Take time to look through the text output files to ensure you understand how WRF-Var has performed. For example, How closely has WRF-Var fitted individual observation types? Look at the statistics file to compare the O-B and O-A statistics. How big are the analysis increments? Again, look in the statistics file to see minimum/maximum values of A-B for each variable at various levels. It will give you a feel WRF-ARW V3: User’s Guide 6-31
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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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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 and 154: 14. Darwin (MACOS) g95 with gcc (dm
Page 155 and 156: gzip -cd WRFNL3.1_PATCH.tar.gz | ta
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: WRF-VAR clwp: cloud liquid water pa
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
Page 205 and 206: OBSGRID • Provide surface fields
Page 207 and 208: Banana Scheme OBSGRID In analyses o
Page 209 and 210: Objective Analysis on Model Nests O
Page 211 and 212: Check your output OBSGRID Examine t
Page 213 and 214: OBSGRID • All reports for each se
Page 215 and 216: Each report in the wrf_obs/little_r
Page 217 and 218: OBSGRID The end data record is simp
Page 219 and 220: OBSGRID remove_data_above_qc_flag 2
Page 221 and 222: Namelist Variable Value Description
Page 223 and 224: Namelist record8 OBSGRID The data i
Page 225 and 226: Chapter 8: WRF Software Table of Co
Page 227 and 228: 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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