1 ------------------------
2 WRFDA PUBLIC DOMAIN NOTICE
3 ------------------------
5 WRF Data Assimilation System (WRFDA) was developed at the National
6 Center for Atmospheric Research (NCAR) which is operated by the
7 University Corporation for Atmospheric Research (UCAR). NCAR and
8 UCAR make no proprietary claims, either statutory or otherwise,
9 to this version and release of WRFDA and consider WRFDA to be in
10 the public domain for use by any person or entity for any purpose
11 without any fee or charge. UCAR requests that any WRFDA users include
12 this notice on any partial or full copies of WRFDA. WRFDA is provided
13 on an "AS IS" basis and any warranties, either express or implied,
14 including but not limited to implied warranties of non-infringement,
15 originality, merchantability and fitness for a particular purpose,
16 are disclaimed. In no event shall UCAR be liable for any damages,
17 whatsoever, whether direct, indirect, consequential or special, that
18 arise out of or in connection with the access, use or performance of
19 WRFDA, including infringement actions.
21 ======================================
22 This is the main directory for the WRFDA Version 4 source code release.
23 ======================================
28 Version 4.4 was released on April 26, 2022.
30 For more information about WRFDA, visit the WRFDA Users home page
31 http://www2.mmm.ucar.edu/wrf/users/wrfda/index.html
35 - New capability for assimilating GPM GMI radiance data, contributed by Dr. Dongmei Xu at
36 the Nanjing University of Information Science & Technology.
37 Shen, F., D. Xu, H. Li, J. Min, and R. Liu,2021: Assimilation of GPM Microwave Imager Radiance data with
38 the WRF Hybrid 3DEnVar System for the Prediction of Typhoon Chan-hom (2015), Atmospheric Research. 251, 105422.
40 - New option for surface aerosol data assimilation with the MADE-VBS aerosol scheme. The ~doc/README.DA_chem
41 file provides a description for all chemical/aerosol DA options currently available.
42 Ha, Soyoung, 2022: Implementation of aerosol data assimilation in WRFDA (V4.0.3) for WRF-Chem (V3.9.1)
43 using the MADE/VBS scheme. Geosci. Model Dev., 15, 1769–1788.
45 - Ingest NCEP's satwnd.bufr to assimilate more AMVs that are not included in NCEP's prepbufr file.
46 The "use_satwnd_bufr" namelist parameter default is true.
50 - Allow to set thinning mesh differently for different conventional observations through a new namelist
51 parameter "thin_conv_opt(num_ob_indexes)". Also reduced memory use for thinning conventional observations.
53 - WRFDA gpsref code has been restructured to move QC steps in da_get_innov_vector_gpsref.inc to a separate
54 subroutine in a new file da_qc_gpsref.inc. New namelist variables are added to have more flexibility for
55 testing gpsref QC impact. Several issues with gpsref diagnostic output have been fixed and qcstat info
56 for gpsref is now in new qcstat_gpsref_xx.
58 - Bug fixes and enhancements for applications related to offline VarBC (use_background_errors=false),
59 3DEns-FGAT (num_fgat_time>0 and ensdim_alpha>0 and je_factor=1.0), precondition_cg=true and
60 orthonorm_gradient=true when ensdim_alpha>0, full-ensemble mode (ensdim_alpha>0 and je_factor=1.0).
62 - Enable the assimilation of metop-c AMSU-A and MHS radiances with updated VARBC.in and "radiance info" files.
66 - For direct assimilation of radar reflectivity, remove the use of "qthres" in the forward operator, which can
67 cause an unrealistic low bound of computed reflectivity. Also simplify the quality control to keep data with
68 both observed and background reflectivity >=rfmin (a namelist parameter).
70 - Fixed a bug in calculating TAMDAR aircraft temperature bias correction.
72 - Fixed memory leaks and runtime crashes due to the missing specification for time info inside chemical DA..
77 Version 4.3 was released on May 10, 2021.
79 For more information about WRFDA, visit the WRFDA Users home page
80 http://www2.mmm.ucar.edu/wrf/users/wrfda/index.html
84 - New capability for Multi-Resolution Incremental 4DVar (MRI-4DVar).
85 Liu, Z., J. Ban, J.-S, Hong, and Y.-H. Kuo, 2020: Multi-resolution incremental
86 4D-Var for WRF: Implementation and application at convective scale,
87 Q. J. R. Meteorol. Soc., 146, 3661-3674.
89 - New capability for assimilating surface pm2.5, pm10, O3, CO, NO2, SO2 using 3DVar.
90 Sun, W., Liu, Z., Chen, D., Zhao, P., and Chen, M., 2020: Development and application
91 of the WRFDA-Chem three-dimensional variational (3DVAR) system: aiming to improve air
92 quality forecasting and diagnose model deficiencies, Atmos. Chem. Phys., 20, 9311-9329.
96 - WRFDA gen_be_v3 is updated for cv_options=5 and ensemble applications.
97 Please see var/gen_be_v3/README.gen_be_v3.
99 See http://www2.mmm.ucar.edu/wrf/users/wrfda/updates-4.3.html for a full list of updates
104 Version 4.2 was released on April 23, 2020.
106 For more information about WRFDA, visit the WRFDA Users home page
107 http://www2.mmm.ucar.edu/wrf/users/wrfda/index.html
111 - New capability for directly assimilating radar reflectivity using a new observation
112 operator and its TL/AD considering snow and graupel.
113 Wang, S. and Z. Liu, 2019: A radar reflectivity operator with ice-phase hydrometeors
114 for variational data assimilation (version 1.0) and its evaluation with real radar data,
115 Geosci. Model Dev., 12, 4031–4051.
117 - New capability for variational bias correction of TAMDAR T observations.
118 The bias correction is applied based upon aircraft's IDs and phases (descent/ascent/cruise).
119 To turn on this function, set "use_varbc_tamdar = true" in namelist (\wrfvar4).
120 Gao, F., Z. Liu, J. Ma, A. N. Jacobs, P. P. Childs, and H. Wang, 2019: Variational Bias
121 Correction of TAMDAR Temperature Observations in the WRF Data Assimilation System.
122 Monthly Weather Review. 147. 10.1175/MWR-D-18-0025.1.
124 - New channel-based cloud detection scheme for Infrared sensors based on the Particle Filter.
125 This is now the default option for IR cloud detection (use_clddet=2).
126 Xu D., T. Auligné, G. Descombes, and C. Snyder, 2016: A method for retrieving clouds with
127 satellite infrared radiances using the particle filter. Geosci. Model Dev., 9, 3919–3932.
129 - New capability for an IR-only cloud detection scheme for AHI radiance data assimilation.
130 To turn this option on, set use_clddet_zz=true.
131 Wu, Y., Z. Liu, and D. Li, 2020, Improving forecasts of a record-breaking rainstorm in Guangzhou
132 by assimilating every 10-min AHI radiances with WRF 4DVAR. Atmospheric Research, 239, 104912.
134 Zhuge, X., Zou, X., 2016. Test of a modified infrared-only ABI cloud mask algorithm for AHI
135 radiance observations. J. Appl. Meteorol. Climatol. 55 (11), 2529–2546.
137 - New stand-alone gen_be_v3. See var/gen_be_v3/README.gen_be_v3 for more info.
141 - Improved analysis_type="RANDOMCV". Now multiple perturbed output can be obtained with one WRFDA run, set new namelist "n_randomcv" to the desired number of ensemble.
143 - For EnVar DA applications, logical "alpha_vertloc" namelist switch is replaced by new integer
144 option "alpha_vertloc_opt". See var/README.namelist.
146 - New DA ep_format option to read in ensemble perturbation (ep) generated by existing gen_be_ep2
147 and new gen_be_v3 utilities.
149 See http://www2.mmm.ucar.edu/wrf/users/wrfda/updates-4.2.html for a full list of updates
154 Version 4.1 was released on April 12, 2019.
156 For more information about WRFDA, visit the WRFDA Users home page
157 http://www2.mmm.ucar.edu/wrf/users/wrfda/index.html
161 - Himawari AHI radiance data assimilation
162 Wang, Y., Z. Liu, S. Yang, J. Min, L. Chen, Y. Chen, and T. Zhang, 2018:
163 Added value of assimilating Himawari-8 AHI water vapor radiances on analyses
164 and forecasts for "7.19" severe storm over north China. J. Geophys. Res. Atmos.,
165 123, https://doi.org/10.1002/2017JD027697.
166 - 3DVAR and hybrid-3D/4DEnVar now work with moist potential temperature.
170 - Update WRFDA to handle RTTOV v12.1. New emissivity formulations are enabled
171 as well as HDF-only emissivity atlas files. Compiling WRFDA for RTTOV now
172 requires an HDF5 library.
173 - The code-base of CRTM carried with WRFDA is updated from v2.2.3 to v2.3.0.
174 Starting with V4.0, CRTM coefficient files are NOT included
175 in any of the WRF or WRFDA tar files. There are two ways to get this data.
176 1. A subset of coefficient files can be download from
177 http://www2.mmm.ucar.edu/wrf/users/wrfda/download/crtm_coeffs.html
178 2. The full set of CRTM coefficients may be downloaded from:
179 ftp://ftp.emc.ncep.noaa.gov/jcsda/CRTM/REL-2.3.0/crtm_v2.3.0.tar.gz
180 For external users, replace the link ‘var/run/crtm_coeffs’ with the directory
181 contained in the appropriate tar file. A copy is also available under ~wrfhelp
182 on the NCAR cheyenne supercomputer (for internal use).
183 - Enhance the gts_omb_oma diagnostics by appending time slot information after the level information.
184 - Allow pseudo ob at not-first time slot for 4DVAR.
185 - New WRFDA namelist options for specifying errors for radar rhv(rrn/rsn/rgr)
186 - New WRFDA namelist options for turning on/off some diagnostic output.
187 - Fix to allow assimilation of SSMI TPW contained (prior to Nov 2009) in prepbufr
188 obs files when ob_format=1 and use_ssmiretrievalobs=.true.
190 See http://www2.mmm.ucar.edu/wrf/users/wrfda/updates-4.1.html for a full list of updates
195 Version 4.0 was released on June 8, 2018.
197 For more information about WRFDA, visit the WRFDA Users home page
198 http://www2.mmm.ucar.edu/wrf/users/wrfda/index.html
202 - GOES-Imager radiance data assimilation
203 - GPSRO Excess PHase (GPSEPH) observation operator
204 - Large-scale analysis constraint (LSAC)
205 - Divergence constraint (DIVC)
209 - WRFPlus code is now fully integrated into WRF and TLM/ADJ code, located under the 'wrftladj' directory.
210 - Starting with V4.0, CRTM coefficient files are NOT included in any of the WRF or WRFDA tar files.
211 There are two ways to get this data.
212 1. A subset of coefficient files can be download from
213 http://www2.mmm.ucar.edu/wrf/users/wrfda/download/crtm_coeffs.html
214 2. The full set of CRTM coefficients may be downloaded from:
215 ftp://ftp.emc.ncep.noaa.gov/jcsda/CRTM/REL-2.2.3/crtm_v2.2.3.tar.gz
217 WRFDA with hybrid vertical coordinate (HVC) and moist potential temperature (THM):
218 -----------------------------------------------------------------------------------
219 - 3DVAR works with HVC since V3.9, but does not work with THM
220 - Neither WRFPlus nor 4DVAR work with HVC or THM
221 - It is recommended to turn off HVC (set hybrid_opt=0, etac=0.0) and THM (set use_theta_m=0)
222 when using WRF V4.0 along with WRFDA V4.0
224 See http://www2.mmm.ucar.edu/wrf/users/wrfda/updates-4.0.html for a full list of updates
226 ======================================
227 This is the main directory for the WRFDA Version 3 source code release.
228 ======================================
230 V3.9.1 Release Notes :
233 Version 3.9.1 was released on August 17, 2017.
235 For more information about WRFDA, visit the WRFDA Users home page
236 http://www2.mmm.ucar.edu/wrf/users/wrfda/index.html
240 - Reduced memory usage for non-4DVAR runs
241 - Some bugs have been fixed
243 See http://www2.mmm.ucar.edu/wrf/users/wrfda/updates-3.9.1.html for a full list of updates
245 ======================================
250 Version 3.9 was released on April 17, 2017.
252 For more information about WRFDA, visit the WRFDA Users home page
253 http://www2.mmm.ucar.edu/wrf/users/wrfda/index.html
257 - AMSR2 cloudy radiance assimilation
258 - 4DEnVar assimilation capability
259 - Radar "null-echo" assimilation
262 - Many bug fixes and performance improvements, including:
263 - For use_radar_rhv=true, total reflectivity and retrieved hydrometeors were calculated incorrectly
264 - Several compile-time and run-time bugs for PGI compilers
265 - Updated CRTM to version 2.2.3 (from 2.1.3)
266 - New run-time options for improving surface data assimilation (FM-12 SYNOP)
267 - Improved implementation of cloud control variables (no longer requires conditional compilation)
268 - New run-time options for calculating cloud base height for use_radar_rqv=true
269 - WRFPLUS has been upgraded to V3.9 and is consistent with the released WRF version 3.9.
271 See http://www2.mmm.ucar.edu/wrf/users/wrfda/updates-3.9.html for a full list of updates
273 ======================================
275 V3.8.1 Release Notes :
278 Version 3.8.1 was released on August 12, 2016.
280 For more information about WRFDA, visit the WRFDA Users home page
281 http://www2.mmm.ucar.edu/wrf/users/wrfda/index.html
285 - Additional information is now printed to log files, including:
286 - Domain mapping info
287 - Extra minimization info
288 - CRTM-specific code is now compiled automatically
289 - A number of issues have been fixed for this release, including:
290 - Fixed compilation problems for Fujitsu compilers
291 - A fix for some BUFR compilation problems if user has certain environment variables set
292 - A fix for crashes with 4DVAR assimilation when using RRTMG radiation physics
293 - Avoiding alarming (but harmless) error messages from GEN_BE stage 0
294 - Fixing CRTM compilation problems for some Cray platforms
295 - Cleaning up various log file outputs and clarifying some error messages
296 - Fixed some incorrect default variables for certain physics options
297 - WRFPLUS has been upgraded to V3.8.1 and is consistent with the released WRF version 3.8.1.
299 See http://www2.mmm.ucar.edu/wrf/users/wrfda/updates-3.8.1.html for a full list of updates
301 ======================================
306 Version 3.8 was released on April 8, 2016.
308 For more information about WRFDA, visit the WRFDA Users home page
309 http://www2.mmm.ucar.edu/wrf/users/wrfda/index.html
313 - A new observation type: AMSR2 radiance
314 - A new dynamic constraint for 3DVAR and Hybrid assimilation
318 - The CV7 Background Error feature has been updated with major bug fixes
319 - Fixed problems with excessive noise in moisture field for some radar options (use_radar_rhv, use_radar_rqv)
320 - Improved assimilation of surface pressure obs for sfc_assi_options=1
321 - Improved consistency of surface diagnostics (T2, Q2, U10, and V10) between WRFDA and WRF
323 - RTTOV interface now supports RTTOV Version 11.1, 11.2, or 11.3
324 - Many bug fixes and performance improvements
325 - WRFPLUS has been upgraded to V3.8 and is consistent with the released WRF version 3.8.
327 See http://www2.mmm.ucar.edu/wrf/users/wrfda/updates-3.8.html for a full list of updates
329 ======================================
331 V3.7.1 Release Notes :
334 Version 3.7.1 was released on August 14, 2015.
336 For more information about WRFDA, visit the WRFDA Users home page
337 http://www2.mmm.ucar.edu/wrf/users/wrfda/index.html
341 - A number of issues have been fixed for this release, including:
342 - A fix for the new radar option "use_radar_rqv"
343 - A fix for crashes and/or incorrect results for 4DVAR when assimilating radiance data with
344 RTTOV with the option "rttov_emis_atlas_ir=1"
345 - Fixing display problems in OBSPROC for large numbers of observations
346 - Avoiding problems in OBSPROC with default observation error values
347 - An incorrect interpolation of U and V in new CV7 option in GEN_BE has been fixed
348 - WRFPLUS has been upgraded to V3.7.1
350 See http://www2.mmm.ucar.edu/wrf/users/wrfda/updates-3.7.1.html for a full list of updates
352 ======================================
357 Version 3.7 was released on April 20, 2015.
359 For more information on WRFDA, visit the WRFDA Users home page
360 http://www2.mmm.ucar.edu/wrf/users/wrfda/index.html
364 -New background error option: CV7 (cv_options = 7)
365 -Radar assimilation has been updated: new options have been added for reflectivity assimilation
366 -A new mp_physics option is available for WRFPLUS in 4DVAR runs
370 -WRFDA can now use WRF files with the "lat-lon" (cylindrical equidistant) map projection. This
371 does not include global WRF files.
373 -RTTOV interface is now for RTTOV Version 11.1 or 11.2
374 -Bug fixes and performance improvements
375 -WRFPLUS has been upgraded to V3.7.
376 ======================================
378 V3.6.1 Release Notes :
381 Version 3.6.1 was released on August 14, 2014.
383 For more information about WRFDA, visit the WRFDA Users home page
384 http://www2.mmm.ucar.edu/wrf/users/wrfda/index.html
388 - A number of issues have been fixed for this release, including:
389 - The FGAT capability has been updated to produce better results
390 - Several bugs which may cause compilation failure
391 - Bugs in SEVIRI radiance assimilation
392 - Errors when using RTTOV to assimilate radiances in 4DVAR
393 - The FGAT capability has been updated to produce better results
394 - Many other minor problems
395 - WRFPLUS has been upgraded to V3.6.1
397 See http://www2.mmm.ucar.edu/wrf/users/wrfda/updates-3.6.1.html for a full list of updates
399 ======================================
403 Version 3.6 was released on April 18, 2014.
405 For more information on WRFDA, visit the WRFDA Users home page
406 http://www2.mmm.ucar.edu/wrf/users/wrfda/index.html
410 -Dual-resolution hybrid assimilation has been implemented
411 -New instruments can be assimilated:
414 -AIREP humidity observations
415 -Observation thinning for conventional observations in ASCII format
419 -GPS Radio Occultation data can now be read separately from other conventional data types
420 -Wind speed/direction assimilation has been updated, and namelist options have changed. See the
421 relevant section of the User's Guide for more information.
425 -RTTOV interface is now for RTTOV Version 11.1
426 -Bug fixes and performance improvements
427 -WRFPLUS has been upgraded to V3.6.
429 ======================================
430 V3.5.1 Release Notes :
433 Version 3.5.1 is released on September 23, 2013.
435 For more information on WRFDA, visit the WRFDA Users home page
436 http://www2.mmm.ucar.edu/wrf/users/wrfda/index.html
439 The following bugs have been fixed:
440 -BUFR libraries have been updated to allow WRFDA to read and assimilate NCEP PREPBUFR files of
442 -Compilation failure with some older Fortran95 compilers
443 -A problem with Variational Bias Correction (VARBC) on some platforms
444 -A problem with OBSPROC's built-in observation error file (obserr.txt) on some platforms
445 -A bug causing failures when "print_detail_outerloop=true"
446 -A few more miscellaneous fixes
448 ======================================
452 Version 3.5 is released on April 18. 2013.
454 For more information on WRFDA, visit the WRFDA Users home page
455 http://www2.mmm.ucar.edu/wrf/users/wrfda/index.html
459 -Wind Speed/Direction Assimilation: Wind speed/direction observations can now be directly
461 -New satellite instruments can be assimilated:
462 -METOP Infrared Atmospheric Sounding Interferometer (IASI)
463 -NPP Advanced Technology Microwave Sounder (ATMS)
464 -FY3 Microwave Temperature Sounder (MWTS) and Microwave Humidity Sounder (MWHS)
468 -Yellowstone compilation options: Specific compilation options for the new NCAR supercomputer
469 Yellowstone have been added.
470 -Updated I/O for improved back-compatability with previous versions of WRF and WRFDA
471 -WRFDA-3DVAR can now read two different PREPBUFR observation files at once
472 -The "ntmax" namelist variable is now a vector, and can be set to a different value for each
474 -WRFPLUS has been upgraded to V3.5 and it is consistent with the released WRF version 3.5.
476 ======================================
477 V3.4.1 Release Notes :
480 Version 3.4.1 is released on August 16, 2012.
482 - For more information on WRFDA, visit the WRFDA Users home page
483 http://www2.mmm.ucar.edu/wrf/users/wrfda/index.html
485 - WRFDA registry files have been reconstructed.
486 Default namelist settings are now in registry.var file.
488 - WRFPLUS registry bug fixes related to mp_physics=9,10,13,14,16,17,18
490 ======================================
494 Version 3.4 is released on April 6, 2012.
496 - The WRFPLUS (WRF adjoint and tangent linear model) has been upgraded to V3.4 and it is consistent
497 with the released WRF version 3.4. Added parallel WRF TL/AD based on WRF 3.4.
499 - WRFDA 4D-Var now supports compilation to run in parallel.
501 - WRFDA 4D-Var now supports precipitation data (such as stage IV) assimilation.
503 - The ability to generate forecast sensitivity to observations has been updated.
505 - WRFDA Hybrid 3D-Var has been updated.
507 ======================================
509 V3.3.1 Release Notes :
512 Version 3.3.1 is released on September 27, 2011.
514 - WRF 4D-Var has been improved on lateral boundary condition control, analysis scheme for surface
519 ======================================
522 -----------------------
524 Version 3.3 is released on April 6, 2011.
526 - RTTOV interfaces has been upgraded to version 10.0
527 Please download RTTOV v10.0 and install it in appropriate location
528 if you want to use RTTOV to assimilate radiance observation with bufr format
530 - crtm_atmosphere is removed from the namelist.
531 Now the CRTM reference climatology is determined inside WRFDA based on
535 The WRFPLUS (WRF adjoint and tangent linear model) has been upgraded to V3.3
536 and it is consistent with the released WRFV version 3.3. However, only dry dynamic
537 processes are included in WRFPLUS version 3.3 and only serial run is supported
539 WRFDA is also upgraded to consistent with WRFPLUS version 3.3 and the new 4D-Var
540 system is a single executable application. Please refer to Users' guide for the
545 V3.2.1 Release Notes:
546 -----------------------
548 Version 3.2.1 is released on August 18, 2010.
550 - CRTM interface for radiance assimilation has been upgraded to version 2.0.2.
552 - CRTM V2.0.2 has been included as an internal library in WRFDA codes.
553 Setting environmental variable CRTM to ANYTHING to activate the CRTM installation
554 during WRFDA compilation.
556 - Multivariate gen_be method which considers the correlations between moisture and
557 other variables is included, but the support for the new capability will be very
563 -----------------------
565 Version 3.2 is released on March 31, 2010.
567 - Improvements on multiple outer loop which handling nonlinearity issue
569 - Adjoint sensitivity tool
571 - Improved software performance
573 - Improved WRF adjoint codes.
575 V3.1.1 Release Notes:
576 -----------------------
578 Version 3.1.1 is released on July 31, 2009.
580 - Radiance data assimilation using K Matrix capability is completed in V3.1.1 release,
581 which dramatically speedup the analysis. To use K Matrix , please
582 set USE_CRTM_KMATRIX=true in wrfvar14@namelist.input.
583 Note: it only applied on CRTM in V3.1.1.
585 - Improved software portability; only NETCDF library is mandatory
586 if only LITTLE_R formated conventional observational data to be used.
587 To use Prepbufr observational files, just set environmental variable
588 BUFR equal to 1 before the code is compiled. To use radiance BUFR
589 format data, CRTM or RTTOV is needed.
593 -----------------------
595 Version 3.1 is released on April 9, 2009.
597 - For more information on WRFDA, visit the new WRFDA Users home page
598 http://www2.mmm.ucar.edu/wrf/users/wrfda/index.html
599 and read the online User's Gudie.
601 - 4DVAR and radiance data assimilation capabilities are included in V3.1.
603 - New README files under WRFDA/var (README.namelist, README.basics,
606 - WRFDA V3.1 executable will work with V3.0 wrfinput/wrfbdy (but requires
607 inserting a new namelist variable use_baseparam_fr_nml in &dynamics).
608 However, rerunning V3.1 WPS/real.exe is recommended.
610 - Changes to namelist variables.
611 * Some obsolete or unused namelist variables are removed, some new namelist
612 variables are added, purposes of some namelist variables are changed.
613 See WRFDA/var/README.namelist for descriptions of supported namelist
616 - Changes to obsproc:
617 * the executable is renamed to be obsproc.exe from 3dvar_obs.exe and
618 namelist.3dvar_obs is renamed to be namelist.obsproc to reflect
619 its capabilitiy of producing WRFDA-ready observations for 3DVAR, FGAT,
620 or 4DVAR applications.
621 See WRFDA/var/obsproc/README.
622 * compilation of obsproc.exe is included in "compile all_wrfvar"
624 - Changes to diagnostic output files
625 * gts_omb_oma becomes gts_omb_oma_01 (01 indicates outer loop index)
626 * observations that fail check_max_iv are listed in rej_obs_conv_01.000
627 ( 01 is outer loop index, 000 is processor id)
628 * qcstat_conv_01 (01 indicates outer loop index) contains observation
631 - Most of the scripts under WRFDA/var/scripts are removed from the main source
632 code tar file. They can still be downloaded separately.
633 See http://www2.mmm.ucar.edu/wrf/users/wrfda/download/tools.html
635 For questions, send mail to wrfhelp@ucar.edu
637 ======================================
639 WRFDA update history:
642 - V3.0.1: Aug 6, 2008
643 - V3.0.1.1: Aug 29, 2008
645 - V3.1.1: Jul 31, 2009
647 - V3.2.1: Aug 18, 2010
649 - V3.3.1: Sep 27, 2011
651 - V3.4.1: Aug 16, 2012
653 - V3.5.1: Sep 23, 2013
655 - V3.6.1: Aug 14, 2014
657 - V3.7.1: Aug 14, 2015
659 - V3.8.1: Aug 12, 2016
661 - V3.9.1: Aug 17, 2017
663 ======================================
665 How to compile and run?
666 -----------------------
668 - In WRFDA directory, type `configure wrfda` - this will create a configure.wrf
669 file that has appropriate compile options for the supported computers.
671 Note: WRFDA only requires netCDF library for compilation
672 Install netCDF library with the same compiler that will be used to compile WRFDA.
673 NCEP BUFR and CRTM libs are included in the WRFDA tar file.
674 Set environment variables properly according to your applications
675 before you type 'configure wrfda'. For example,
677 setenv NETCDF /usr/local/netcdf
678 setenv RTTOV /usr/local/rttov11 (optional, set to compile WRFDA with RTTOV capability)
680 - Type 'compile all_wrfvar' when you are ready:
682 - If sucessful, this will create da_wrfvar.exe and a set of utilities
683 in directory WRFDA/var/build/.
685 - cd to the appropriate test or run directory to run WRFDA.
687 Some basic instruction/namelist.input are available in sub-directories
690 - See the Users Guide (http://www2.mmm.ucar.edu/wrf/users/wrfda/usersguide.html) for more detailed instructions.