WRF ARW User's Guide - MMM - UCAR

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WPS Since the ungrib program may produce a significant volume of output, it is recommended that ungrib output be redirected to a file, as in the command above. If ungrib.exe runs successfully, the message !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! Successful completion of ungrib. ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! will be written to the end of the ungrib.output file, and the intermediate files should appear in the current working directory. The intermediate files written by ungrib will have names of the form FILE:YYYY-MM-DD_HH (unless, of course, the prefix variable was set to a prefix other than 'FILE'). > ls drwxr-xr-x 2 4096 arch -rwxr-xr-x 1 1672 clean -rwxr-xr-x 1 3510 compile -rw-r--r-- 1 85973 compile.output -rwxr-xr-x 1 4257 configure -rw-r--r-- 1 2486 configure.wps -rw-r--r-- 1 154946888 FILE:2008-03-24_12 -rw-r--r-- 1 154946888 FILE:2008-03-24_18 -rw-r--r-- 1 1957004 geo_em.d01.nc -rw-r--r-- 1 4745324 geo_em.d02.nc drwxr-xr-x 4 4096 geogrid lrwxrwxrwx 1 23 geogrid.exe -> geogrid/src/geogrid.exe -rw-r--r-- 1 11169 geogrid.log lrwxrwxrwx 1 38 GRIBFILE.AAA -> /data/gfs/gfs_080324_12_00 lrwxrwxrwx 1 38 GRIBFILE.AAB -> /data/gfs/gfs_080324_12_06 -rwxr-xr-x 1 1328 link_grib.csh drwxr-xr-x 3 4096 metgrid lrwxrwxrwx 1 23 metgrid.exe -> metgrid/src/metgrid.exe -rw-r--r-- 1 1094 namelist.wps -rw-r--r-- 1 1987 namelist.wps.all_options -rw-r--r-- 1 1075 namelist.wps.global -rw-r--r-- 1 652 namelist.wps.nmm -rw-r--r-- 1 4786 README drwxr-xr-x 4 4096 ungrib lrwxrwxrwx 1 21 ungrib.exe -> ungrib/src/ungrib.exe -rw-r--r-- 1 1418 ungrib.log -rw-r--r-- 1 27787 ungrib.output drwxr-xr-x 3 4096 util lrwxrwxrwx 1 33 Vtable -> ungrib/Variable_Tables/Vtable.GFS Step 3: Horizontally interpolating meteorological data with metgrid In the final step of running the WPS, meteorological data extracted by ungrib are horizontally interpolated to the simulation grids defined by geogrid. In order to run metgrid, the namelist.wps file must be edited. In particular, the “share” and “metgrid” namelist records are of relevance to the metgrid program. Examples of these records are shown below. WRF-ARW V3: User’s Guide 3-16
&share wrf_core = 'ARW', max_dom = 2, start_date = '2008-03-24_12:00:00','2008-03-24_12:00:00', end_date = '2008-03-24_18:00:00','2008-03-24_12:00:00', interval_seconds = 21600, io_form_geogrid = 2 / &metgrid fg_name = 'FILE', io_form_metgrid = 2, / WPS By this point, there is generally no need to change any of the variables in the “share” namelist record, since those variables should have been suitably set in previous steps. If the "share" namelist was not edited while running geogrid and ungrib, however, the WRF dynamical core, number of domains, starting and ending times, interval between meteorological data, and path to the static domain files must be set in the “share” namelist record, as described in the steps to run geogrid and ungrib. In the “metgrid” namelist record, the path and prefix of the intermediate meteorological data files must be given with fg_name, the full path and file names of any intermediate files containing constant fields may be specified with the constants_name variable, and the output format for the horizontally interpolated files may be specified with the io_form_metgrid variable. Other variables in the “metgrid” namelist record, namely, opt_output_from_metgrid_path and opt_metgrid_tbl_path, allow the user to specify where interpolated data files should be written by metgrid and where the METGRID.TBL file may be found. As with geogrid and the GEOGRID.TBL file, a METGRID.TBL file appropriate for the WRF core must be linked in the metgrid directory (or in the directory specified by opt_metgrid_tbl_path, if this variable is set). > ls metgrid/METGRID.TBL lrwxrwxrwx 1 15 METGRID.TBL -> METGRID.TBL.ARW After suitably editing the namelist.wps file and verifying that the correct METGRID.TBL will be used, metgrid may be run by issuing the command > ./metgrid.exe If metgrid successfully ran, the message !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! Successful completion of metgrid. ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! will be printed. After successfully running, metgrid output files should appear in the WPS root directory (or in the directory specified by opt_output_from_metgrid_path, if this variable was set). These files will be named met_em.d0N.YYYY-MM-DD_HH:mm:ss.nc in WRF-ARW V3: User’s Guide 3-17
Page 1 and 2: ��
Page 3 and 4: 1. Overview − Introduction ......
Page 5 and 6: 8. WRF Software − Introduction ..
Page 7 and 8: Table of Contents Chapter 1: Overvi
Page 9 and 10: OVERVIEW • Map projections for 1)
Page 11 and 12: Table of Contents Chapter 2: Softwa
Page 13 and 14: SOFTWARE INSTALLATION Note 1: If on
Page 15 and 16: Building the WRF Code SOFTWARE INST
Page 17 and 18: Building the WRF-Var Code SOFTWARE
Page 19 and 20: Chapter 3: WRF Preprocessing System
Page 21 and 22: WPS information specified by the us
Page 23 and 24: Required Libraries The only library
Page 25 and 26: ls drwxr-xr-x 2 4096 arch -rwxr-xr-
Page 27 and 28: should be written to may be indicat
Page 29 and 30: WPS When configuring a rotated lati
Page 31 and 32: WPS geog_data_path variable. Also,
Page 33: WPS supplied with Vtable files for
Page 37 and 38: &share wrf_core = 'ARW', max_dom =
Page 39 and 40: that the MODIS-based categories sho
Page 41 and 42: should be set to a list of prefixes
Page 43 and 44: WPS If no field is found in more th
Page 45 and 46: WPS Output from the ungrib program
Page 47 and 48: 5 19121.152344 0.093761623 6 19371.
Page 49 and 50: WPS ! 0 = cylindrical equidistant !
Page 51 and 52: The meanings of the level fields ar
Page 53 and 54: not possible to write a geogrid bin
Page 55 and 56: Description of the Namelist Variabl
Page 57 and 58: 3. I_PARENT_START : A list of MAX_D
Page 59 and 60: 21. POLE_LON : For the latitude-lon
Page 61 and 62: 2. PRIORITY : An integer specifying
Page 63 and 64: Default value is null (i.e., no dom
Page 65 and 66: 17. TILE_Y : An integer specifying
Page 67 and 68: 5. FROM_INPUT : A character string
Page 69 and 70: 21. FLAG_IN_OUTPUT : A character st
Page 71 and 72: 6. wt_average_16pt : Weighted sixte
Page 73 and 74: Table 2: IGBP-Modified MODIS 20-cat
Page 75 and 76: float MAPFAC_MY(Time, south_north,
Page 77 and 78: :corner_lons = -93.64893f, -92.3966
Page 79 and 80: :SOUTH-NORTH_PATCH_END_UNSTAG = 60
Page 81 and 82: Table of Contents Chapter 4: WRF In
Page 83 and 84: 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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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
Page 311 and 312:
GRIB data UTILITIES AND TOOLS ncrca
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