WRF ARW User's Guide - MMM - UCAR

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CONTENTS 5. WRF Model − Introduction ................................................................................ 5-1 − Installing WRF ............................................................................5-2 − Running WRF .............................................................................5-7 − Check Output ........................................................................... 5-22 − Trouble Shooting....................................................................... 5-23 − Physics and Dynamics Options................................................. 5-24 − Description of Namelist Variables ............................................. 5-31 − WRF Output Fields.................................................................... 5-53 6. WRF-Var − Introduction ................................................................................. 6-1 − Installing WRF-Var …. ................................................................ 6-3 − Installing WRFNL and WRFPLUS............................................... 6-6 − Running Observation Preprocessor (OBSPROC) ...................... 6-7 − Running WRF-Var..................................................................... 6-12 − Radiance Data Assimilations in WRF-Var................................. 6-20 − WRF-Var Diagnostics................................................................ 6-29 − Updating WRF boundary conditions.......................................... 6-33 − Running gen_be........................................................................ 6-34 − Additional WRF-Var Exercises.................................................. 6-37 − Description of Namelist Variables ............................................. 6-39 7. Objective Analysis (OBSGRID) − Introduction ................................................................................. 7-1 − Program Flow..............................................................................7-2 − Source of Observations............................................................... 7-3 − Objective Analysis techniques in OBSGRID ............................... 7-3 − Quality Control for Observations ................................................. 7-5 − Additional Observations .............................................................. 7-6 − Surface FDDA option .................................................................. 7-6 − Objective Analysis on Model Nests............................................. 7-7 − How to run OBSGRID ................................................................. 7-7 − Output Files.................................................................................7-9 − Plot Utilities ............................................................................... 7-11 − Observations Format................................................................. 7-12 − OBSGRID Namelist................................................................... 7-15 WRF-ARW V3: User’s Guide ii
8. WRF Software − Introduction ................................................................................. 8-1 − WRF Build Mechanism................................................................ 8-1 − Registry....................................................................................... 8-4 − I/O Applications Program Interface (I/O API) ............................ 8-14 − Timekeeping ............................................................................. 8-14 − Software Documentation........................................................... 8-15 − Portability and Performance...................................................... 8-15 9. Post-Processing Programs − Introduction ................................................................................. 9-1 − NCL.. .......................................................................................... 9-2 − RIP4 . ........................................................................................ 9-19 − ARWpost................................................................................... 9-28 − WPP ........................................................................................9-35 − VAPOR ..................................................................................... 9-50 10. Utilities and Tools − Introduction ............................................................................... 10-1 − read_wrf_nc .............................................................................. 10-1 − iowrf . ........................................................................................ 10-5 − p_interp ..................................................................................... 10-6 − TC Bogus Scheme .................................................................... 10-8 − v_interp ................................................................................... 10-10 − Tools ...................................................................................... 10-12 CONTENTS WRF-ARW V3: User’s Guide iii
Page 1 and 2: ��
Page 3: 1. Overview − 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 and 34: WPS supplied with Vtable files for
Page 35 and 36: &share wrf_core = 'ARW', max_dom =
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
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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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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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