1 WRF Model Version 3.2.1 (August 18, 2010)
2 http://wrf-model.org/users/users.php
4 ------------------------
5 WRF PUBLIC DOMAIN NOTICE
6 ------------------------
8 WRF was developed at the National Center for Atmospheric Research
9 (NCAR) which is operated by the University Corporation for
10 Atmospheric Research (UCAR). NCAR and UCAR make no proprietary
11 claims, either statutory or otherwise, to this version and
12 release of WRF and consider WRF to be in the public domain for
13 use by any person or entity for any purpose without any fee or
14 charge. UCAR requests that any WRF user include this notice on
15 any partial or full copies of WRF. WRF is provided on an "AS
16 IS" basis and any warranties, either express or implied,
17 including but not limited to implied warranties of
18 non-infringement, originality, merchantability and fitness for a
19 particular purpose, are disclaimed. In no event shall
20 UCAR be liable for any damages, whatsoever, whether direct,
21 indirect, consequential or special, that arise out of or in
22 connection with the access, use or performance of WRF, including
26 ======================================
27 This is the main directory for the WRF Version 3 source code release.
28 ======================================
30 V3.2.1 Release Notes (8/18/10):
33 This is a bug fix release. The detailed updates for WRF-ARW can be found at
34 http://www.mmm.ucar.edu/wrf/users/wrfv3.2/updates-3.2.1.html, and
36 http://www.dtcenter.org/wrf-nmm/users/model/wrfv3/updates.php
38 See online User's Guides for latest information.
40 ======================================
45 Version 3.2 is released on March 31, 2010.
47 - For more information on WRF V3.2 release, visit WRF User's home pages
48 http://www.mmm.ucar.edu/wrf/users/, and
49 http://www.dtcenter.org/wrf-nmm/users/, and read the online User's Guide.
52 ======================================
54 V3.1.1 Release Notes (7/31/09):
57 This is a bug fix release. The detailed updates for WRF-ARW can be found at
58 http://www.mmm.ucar.edu/wrf/users/wrfv3.1/updates-3.1.1.html, and
60 http://www.dtcenter.org/wrf-nmm/users/model/wrfv3/updates.php
62 See online User's Guides for latest information.
64 ======================================
69 Version 3.1 is released on April 9, 2009.
71 - For more information on WRF V3.1 release, visit WRF Users home page
72 http://www.mmm.ucar.edu/wrf/users/, and read the online User's Guide.
73 - WRF V3 executable will work with V3.0 wrfinput/wrfbdy (but requires
74 inserting a new namelist variable use_baseparam_fr_nml in &dynamics). As
75 always, rerunning the new programs is recommended.
76 - WRF V3.1 has changed a number of namelists. For example, ucmcall has
77 become sf_urban_physics, pd_moist(scalar/tke/chem) has become
78 moist_adv_opt (scalar/tke/chem_adv_opt). Helpful messages will be printed
82 V3.0.1.1 Release Notes:
83 -----------------------
85 Version 3.0.1.1 has only limited bug fixes compared to version 3.0.1.
86 The detailed updates for WRF-ARW can be found at
87 http://www.mmm.ucar.edu/wrf/users/wrfv3/updates-3.0.1.1.html.
93 This is a bug fix release. The detailed updates for WRF-ARW can be found at
94 http://www.mmm.ucar.edu/wrf/users/wrfv3/updates-3.0.1.html.
96 Online User's Guides have also been updated.
98 ======================================
103 - For directions on compiling WRF, see below or Users Web page.
104 - For more information on WRF V3 release, visit WRF Users home page
105 http://www.mmm.ucar.edu/wrf/users/
106 - WRF V3 works with WPS, and SI is no longer supported.
107 Please see User' Guide for WPS.
108 - WRF V3 executable does not work with wrfinput/wrfbdy produced by previous versions.
109 - WRF V3 has removed one obsolete namelist variable, dyn_opt. Edit with caution.
111 ======================================
115 - V2.0.1: May 21, 2004
116 - V2.0.2: June 3, 2004
117 - V2.0.3: Nov 12, 2004
118 V2.0.3.1: Dec 3, 2004
119 - V2.1: August 4, 2005
120 - V2.1.1: Nov 8, 2005
121 - V2.1.2: Jan 27, 2006
123 - V2.2.1: Nov 1, 2007
124 - V3.0: April 4, 2008
125 - V3.0.1: August 5, 2008
126 - V3.0.1.1: August 22, 2008
127 - V3.1: April 9, 2009
128 - V3.1.1: July 31, 2009
129 - V3.2: March 31, 2010
131 ======================================
133 How to compile and run?
134 -----------------------
136 - In WRFV3 directory, type 'configure' - this will create a configure.wrf
137 file that has appropriate compile options for the supported computers.
139 Note: WRF requires netCDF library. If your netCDF library is installed in
140 some odd directory, set environment variable NETCDF before you type
141 'configure'. For example,
143 setenv NETCDF /usr/local/netcdf-pgi
145 - Type 'compile case_name' where you can find the case_names by simply typing
146 compile. The following are available:
150 compile em_heldsuarez
153 compile em_quarter_ss
155 compile em_seabreeze2d_x
156 compile em_squall2d_x
157 compile em_squall2d_y
160 - If sucessful, this will create either real.exe or ideal.exe and wrf.exe
161 in directory main/, and the appropriate executables will be linked into
162 the test directoires under test/case_name, or run/.
164 - cd to the appropriate test or run directory to run ideal/real/wrf.
166 - If it is one of the idealized cases (b_wave, hill2d_x, grav2d_x, quarter_ss,
167 squall2d_x, squall2d_y, em_les or em_heldsuarez), cd the the appropriate directory, type
171 to produce wrfinput_d01 file for wrf model. Then type
177 - If it is real-data case (real), place files from WPS (met_em.*)
178 in the appropriate directory, type
182 to produce wrfbdy_d01 and wrfinput_d01. Then type
188 - If you use mpich, type
190 mpirun -np number-of-processors wrf.exe
192 - For information on how to make nested runs, visit
193 http://www.mmm.ucar.edu/wrf/users/
196 ======================================
200 - Advanced Research WRF (ARW) solver: Eulerian mass, hydrostatic and non-hydrostatic
201 * Arakawa C-grid staggering
202 * Runge-Kutta 2nd and 3rd order timestep options
203 * scalar-conserving flux form for prognostic variables
204 * 2nd to 6th order advection options (horizontal and vertical)
205 * time-split small step for acoustic modes
206 * small step horizontally explicit, vertically implicit
207 * divergence damping option and vertical time off-centering
208 * external-mode filtering option for mass model
209 * hydrostatic option via namelist option
210 * positive-definite and monotonic advection for moisture, scalar, tke and chemical tracers
211 * global modeling capability on latitude-longitude grid
214 * multiple domains and multiple nest levels
215 * supports integer nest grid ratio
216 * feedback option for both odd and even nest grid ratios
223 * Automatic move using a mid-level vortex-following algorithm
226 * microphysics (Kessler/ WRF Single Moment 3, 5 and 6 classes / Lin et al./ Mibrandt 2-moment /
227 Eta Ferrier / Thompson / Goddard / 2-moment Morrison / WRF Double Moment 5 and 6 classes )
228 * cumulus parameterization (Kain-Fritsch with shallow convection /
229 Betts-Miller-Janjic / Grell-Devenyi ensemble / New Grell (with shallow convection option) )
230 * planetary boundary layer (Yosei University / Mellor-Yamada-Janjic / ACM2 / QNSE / MYNN / BouLac )
231 * surface layer (similarity theory MM5 / Eta / QNSE / MYNN )
232 * slab soil model (5-layer thermal diffusion / Noah land-surface model (4 levels) /
233 RUC LSM (6 levels) / Pleim-Xu (2 levels)
234 * Urban canopy model, BEP multi-layer and BEM (works with Noah LSM, BEP and
235 BEM also requires MYJ or BouLac)
236 * longwave radiation (RRTM / CAM / RRTMG)
237 * shortwave radiation (simple MM5 scheme / Goddard / CAM / RRTMG ), terrain slope and shading effect
238 * sub-grid turbulence (constant K diffusion/ 2-D Smagorinsky/ predicted TKE /
239 2-D, 6th order diffusion / Nonlinear Backscatter Anisotropic (NBA) sub-grid turbulence stress for LES )
240 * Rayleigh damping for w at the upper boundary layer
242 * land-use categories determine surface properties; support for 24 category USGS and
243 20 category MODIS (Noah LSM only in V3.1)
244 * Options for modifying SST, sea ice, vegetation fraction, albedo, and deep soil temp
246 * fractional sea ice option for polar regions; modified snow/ice physics
247 * single-column ocean mixed layer model
248 * drag and enthalpy flux formulation for hurricane applications
251 * three-dimensional and surface analysis nudging
252 * observation nudging
257 * Hierarchical software architecture that insulates scientific code
258 (Model Layer) from computer architecture (Driver Layer)
259 * Multi-level parallelism supporting shared-memory (OpenMP), distributed-memory (MPI),
260 and hybrid share/distributed modes of execution
261 * Active data registry: defines and manages model state fields, I/O,
262 nesting, configuration, and numerous other aspects of WRF through a single file,
265 Easy to extend: forcing and feedback of new fields specified by
266 editing a single table in the Registry
267 Efficient: 5-8% overhead on 64 processes of IBM
269 * Enhanced I/O options:
270 NetCDF and Parallel HDF5 formats
271 Nine auxiliary input and history output streams separately controllable through the namelist
272 Special input streams for analysis and observation nudging
273 Output file names and time-stamps specifiable through namelist
274 Special output stream for 3DVAR
275 * Efficient execution on a range of computing platforms:
276 IBM SP systems, (e.g. NCAR "bluevista","blueice","bluefire" Power5-based system)
280 IA64 MPP (HP Superdome, SGI Altix, NCSA Teragrid systems)
282 x86_64 (e.g. TACC's "Ranger", NOAA/GSD "wJet" )
283 PGI, Intel, Pathscale, gfortran, g95 compilers supported
284 Sun Solaris (single threaded and SMP)
285 Cray X1, X1e (vector), XT3/4 (Opteron)
286 Mac Intel/ppc, PGI/ifort/g95
290 * RSL_LITE: communication layer, scalable to very large domains, supports nesting.
291 * I/O: NetCDF, parallel NetCDF (Argonne), HDF5, GRIB, raw binary, Quilting (asynchronous I/O), MCEL (coupling)
292 * ESMF Time Management, including exact arithmetic for fractional
293 time steps (no drift).
294 * ESMF integration - WRF can be run as an ESMF component.
295 * Improved documentation, both on-line (web based browsing tools) and in-line