WRF ARW User's Guide - MMM - UCAR

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WRF-VAR use_eos_amsuaobs false .true.: to read in data from airs.bufr use_hsbobs false .true.: to read in data from hsb.bufr use_ssmisobs false .true.: to read in data from ssmis.bufr use_obs_errfac false .true.: apply obs error tuning factors if errfac.dat is available for conventional data only &wrfvar5 check_max_iv true .true.: reject the observations whose innovations (O-B) are larger than a maximum value defined as a multiple of the observation error for each observation. i.e., inv > (obs_error*factor) --> fails_error_max; the default maximum value is 5 times the observation error ; the factor of 5 can be changed through max_error_* settings. max_error_t 5.0 maximum check_max_iv error check factor for t max_error_uv 5.0 maximum check_max_iv error check factor for u and v max_error_pw 5.0 maximum check_max_iv error check factor for precipitable water max_error_ref 5.0 maximum check_max_iv error check factor for gps refractivity max_error_q 5.0 maximum check_max_iv error check factor for specific humidity max_error_p 5.0 maximum check_max_iv error check factor for pressure max_error_thickness maximum check_max_iv error check factor for thickness max_error_rv maximum check_max_iv error check factor for radar radial velocity max_error_rf &wrfvar6 maximum check_max_iv error check factor for radar reflectivity max_ext_its 1 number of outer loops ntmax 200 maximum number of iterations in an inner loop eps 0.01 minimization convergence criterion (used dimen- (max_ext_its) sion: max_ext_its); minimization stops when the norm of the gradient of the cost function gradient is reduced by a factor of eps. inner minimization stops either when the criterion is met or when inner iterations reach ntmax. WRF-ARW V3: User’s Guide 6-42
WRF-VAR &wrfvar7 cv_options 5 3: NCEP Background Error model 5: NCAR Background Error model (default) as1(3) -1.0 tuning factors for variance, horizontal and vertical scales for control variable 1 = stream function. For cv_options=3 only. The actual default values are 0.25, 1.0, 1.5. as2(3) -1.0 tuning factors for variance, horizontal and vertical scales for control variable 2 - unbalanced potential velocity. For cv_options=3 only. The actual default values are 0.25, 1.0, 1.5. as3(3) -1.0 tuning factors for variance, horizontal and vertical scales for control variable 3 - unbalanced temperature. For cv_options=3 only. The actual default values are 0.25, 1.0, 1.5. as4(3) -1.0 tuning factors for variance, horizontal and vertical scales for control variable 4 - pseudo relative humidity. For cv_options=3 only. The actual default values are 0.25, 1.0, 1.5. as5(3) -1.0 tuning factors for variance, horizontal and vertical scales for control variable 5 - unbalanced surface pressure. For cv_options=3 only. The actual default values are 0.25, 1.0, 1.5. rf_passes 6 number of passes of recursive filter. var_scaling1 1.0 tuning factor of background error covariance for control variable 1 - stream function. For cv_options=5 only. var_scaling2 1.0 tuning factor of background error covariance for control variable 2 - unbalanced velocity potential. For cv_options=5 only. var_scaling3 1.0 tuning factor of background error covariance for control variable 3 - unbalanced temperature. For cv_options=5 only. var_scaling4 1.0 tuning factor of background error covariance for control variable 4 - pseudo relative humidity. For cv_options=5 only. var_scaling5 1.0 tuning factor of background error covariance for control variable 5 - unbalanced surface pressure. For cv_options=5 only. len_scaling1 1.0 tuning factor of scale-length for stream function. For cv_options=5 only. len_scaling2 1.0 tuning factor of scale-length for unbalanced velocity potential. For cv_options=5 only. WRF-ARW V3: User’s Guide 6-43
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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
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 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: WRF-VAR thin_mesh_conv 20. for ob_f
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
Page 229 and 230: SOFTWARE time configuration options
Page 231 and 232: SOFTWARE While the model state and
Page 233 and 234: SOFTWARE u_gc. It is a three dimens
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
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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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