WRF ARW User's Guide - MMM - UCAR

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WPS 9. OUTPUT_STAGGER : A character string specifying the grid staggering to which the field is to be interpolated. For ARW domains, possible values are U, V, and M; for NMM domains, possible values are HH and VV. Default value for ARW is M; default value for NMM is HH. 10. LANDMASK_WATER : An integer value that is the index of the category within the field that represents water. When landmask_water is specified in the table section of a field for which dest_type=categorical, the LANDMASK field will be computed from the field using the specified category as the water category. The keywords landmask_water and landmask_land are mutually exclusive. Default value is null (i.e., a landmask will not be computed from the field). 11. LANDMASK_LAND : An integer value that is the index of the category within the field that represents land. When landmask_water is specified in the table section of a field for which dest_type=categorical, the LANDMASK field will be computed from the field using the specified category as the land category. The keywords landmask_water and landmask_land are mutually exclusive. Default value is null (i.e., a landmask will not be computed from the field). 12. MASKED : Either land or water, indicating that the field is not valid at land or water points, respectively. If the masked keyword is used for a field, those grid points that are of the masked type (land or water) will be assigned the value specified by fill_missing. Default value is null (i.e., the field is not masked). 13. FILL_MISSING : A real value used to fill in any missing or masked grid points in the interpolated field. Default value is 1.E20. 14. HALT_ON_MISSING : Either yes or no, indicating whether geogrid should halt with a fatal message when a missing value is encountered in the interpolated field. Default value is no. 15. DOMINANT_CATEGORY : When specified as a character string, the effect is to cause geogrid to compute the dominant category from the fractional categorical field, and to output the dominant category field with the name specified by the value of dominant_category. This option can only be used for fields with dest_type=categorical. Default value is null (i.e., no dominant category will be computed from the fractional categorical field). 16. DOMINANT_ONLY : When specified as a character string, the effect is similar to that of the dominant_category keyword: geogrid will compute the dominant category from the fractional categorical field and output the dominant category field with the name specified by the value of dominant_only. Unlike with dominant_category, though, when dominant_only is used, the fractional categorical field will not appear in the geogrid output. This option can only be used for fields with dest_type=categorical. WRF-ARW V3: User’s Guide 3-44
Default value is null (i.e., no dominant category will be computed from the fractional categorical field). WPS 17. DF_DX : When df_dx is assigned a character string value, the effect is to cause geogrid to compute the directional derivative of the field in the x-direction using a central difference along the interior of the domain, or a one-sided difference at the boundary of the domain; the derivative field will be named according to the character string assigned to the keyword df_dx. Default value is null (i.e., no derivative field is computed). 18. DF_DY : When df_dy is assigned a character string value, the effect is to cause geogrid to compute the directional derivative of the field in the y-direction using a central difference along the interior of the domain, or a one-sided difference at the boundary of the domain; the derivative field will be named according to the character string assigned to the keyword df_dy. Default value is null (i.e., no derivative field is computed). 19. Z_DIM_NAME : For 3-dimensional output fields, a character string giving the name of the vertical dimension, or z-dimension. A continuous field may have multiple levels, and thus be a 3-dimensional field, and a categorical field may take the form of a 3dimensional field if it is written out as fractional fields for each category. No default value. Description of index Options Related to the GEOGRID.TBL are the index files that are associated with each static data set. An index file defines parameters specific to that data set, while the GEOGRID.TBL file describes how each of the data sets should be treated by geogrid. As with the GEOGRID.TBL file, specifications in an index file are of the form keyword=value. Below are possible keywords and their possible values. 1. PROJECTION : A character string specifying the projection of the data, which may be either lambert, polar, mercator, regular_ll, albers_nad83, or polar_wgs84. No default value. 2. TYPE : A character string, either categorical or continuous, that determines whether the data in the data files should be interpreted as a continuous field or as discrete indices. For categorical data represented by a fractional field for each possible category, type should be set to continuous. No default value. 3. SIGNED : Either yes or no, indicating whether the values in the data files (which are always represented as integers) are signed in two's complement form or not. Default value is no. WRF-ARW V3: User’s Guide 3-45
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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)
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
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: 2. PRIORITY : An integer specifying
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
Page 85 and 86: INITIALIZATION o Symmetric north an
Page 87 and 88: INITIALIZATION • Link the WPS fil
Page 89 and 90: Table of Contents Chapter 5: WRF Mo
Page 91 and 92: MODEL Hint: If using netCDF-4, make
Page 93 and 94: Enter appropriate options that are
Page 95 and 96: . Real-data case For a real-data ca
Page 97 and 98: MODEL eta_levels: model eta levels
Page 99 and 100: estart file named wrfrst_d_ will be
Page 101 and 102: 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
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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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WRF ARW User's Guide - MMM - UCAR

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