[1] | 1 | WRF Model Version 3.3 (April 6, 2011) |
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| 2 | http://wrf-model.org/users/users.php |
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| 3 | |
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| 4 | ------------------------ |
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| 5 | WRF PUBLIC DOMAIN NOTICE |
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| 6 | ------------------------ |
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| 7 | |
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| 8 | WRF was developed at the National Center for Atmospheric Research |
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| 9 | (NCAR) which is operated by the University Corporation for |
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| 10 | Atmospheric Research (UCAR). NCAR and UCAR make no proprietary |
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| 11 | claims, either statutory or otherwise, to this version and |
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| 12 | release of WRF and consider WRF to be in the public domain for |
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| 13 | use by any person or entity for any purpose without any fee or |
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| 14 | charge. UCAR requests that any WRF user include this notice on |
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| 15 | any partial or full copies of WRF. WRF is provided on an "AS |
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| 16 | IS" basis and any warranties, either express or implied, |
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| 17 | including but not limited to implied warranties of |
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| 18 | non-infringement, originality, merchantability and fitness for a |
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| 19 | particular purpose, are disclaimed. In no event shall |
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| 20 | UCAR be liable for any damages, whatsoever, whether direct, |
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| 21 | indirect, consequential or special, that arise out of or in |
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| 22 | connection with the access, use or performance of WRF, including |
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| 23 | infringement actions. |
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| 24 | |
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| 25 | |
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| 26 | ====================================== |
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| 27 | This is the main directory for the WRF Version 3 source code release. |
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| 28 | ====================================== |
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| 29 | |
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| 30 | V3.3 Release Notes: |
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| 31 | ------------------- |
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| 32 | |
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| 33 | Version 3.3 is released on April 6, 2011 (rev 4896). |
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| 34 | |
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| 35 | - For more information on WRF V3.3 release, visit WRF User's home pages |
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| 36 | http://www.mmm.ucar.edu/wrf/users/, and |
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| 37 | http://www.dtcenter.org/wrf-nmm/users/, and read the online User's Guide. |
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| 38 | |
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| 39 | |
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| 40 | ====================================== |
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| 41 | |
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| 42 | V3.2.1 Release Notes (8/18/10): |
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| 43 | ------------------ |
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| 44 | |
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| 45 | This is a bug fix release. The detailed updates for WRF-ARW can be found at |
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| 46 | http://www.mmm.ucar.edu/wrf/users/wrfv3.2/updates-3.2.1.html, and |
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| 47 | for WRF-NMM at |
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| 48 | http://www.dtcenter.org/wrf-nmm/users/model/wrfv3/updates.php |
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| 49 | |
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| 50 | See online User's Guides for latest information. |
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| 51 | |
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| 52 | ====================================== |
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| 53 | |
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| 54 | V3.2 Release Notes: |
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| 55 | ------------------- |
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| 56 | |
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| 57 | Version 3.2 is released on March 31, 2010. |
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| 58 | |
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| 59 | - For more information on WRF V3.2 release, visit WRF User's home pages |
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| 60 | http://www.mmm.ucar.edu/wrf/users/, and |
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| 61 | http://www.dtcenter.org/wrf-nmm/users/, and read the online User's Guide. |
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| 62 | |
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| 63 | |
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| 64 | ====================================== |
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| 65 | |
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| 66 | V3.1.1 Release Notes (7/31/09): |
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| 67 | ------------------ |
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| 68 | |
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| 69 | This is a bug fix release. The detailed updates for WRF-ARW can be found at |
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| 70 | http://www.mmm.ucar.edu/wrf/users/wrfv3.1/updates-3.1.1.html, and |
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| 71 | for WRF-NMM at |
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| 72 | http://www.dtcenter.org/wrf-nmm/users/model/wrfv3/updates.php |
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| 73 | |
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| 74 | See online User's Guides for latest information. |
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| 75 | |
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| 76 | ====================================== |
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| 77 | |
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| 78 | V3.1 Release Notes: |
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| 79 | ------------------- |
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| 80 | |
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| 81 | Version 3.1 is released on April 9, 2009. |
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| 82 | |
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| 83 | - For more information on WRF V3.1 release, visit WRF Users home page |
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| 84 | http://www.mmm.ucar.edu/wrf/users/, and read the online User's Guide. |
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| 85 | - WRF V3 executable will work with V3.0 wrfinput/wrfbdy (but requires |
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| 86 | inserting a new namelist variable use_baseparam_fr_nml in &dynamics). As |
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| 87 | always, rerunning the new programs is recommended. |
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| 88 | - WRF V3.1 has changed a number of namelists. For example, ucmcall has |
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| 89 | become sf_urban_physics, pd_moist(scalar/tke/chem) has become |
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| 90 | moist_adv_opt (scalar/tke/chem_adv_opt). Helpful messages will be printed |
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| 91 | to aid you. |
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| 92 | |
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| 93 | |
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| 94 | V3.0.1.1 Release Notes: |
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| 95 | ----------------------- |
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| 96 | |
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| 97 | Version 3.0.1.1 has only limited bug fixes compared to version 3.0.1. |
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| 98 | The detailed updates for WRF-ARW can be found at |
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| 99 | http://www.mmm.ucar.edu/wrf/users/wrfv3/updates-3.0.1.1.html. |
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| 100 | |
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| 101 | |
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| 102 | V3.0.1 Release Notes: |
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| 103 | --------------------- |
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| 104 | |
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| 105 | This is a bug fix release. The detailed updates for WRF-ARW can be found at |
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| 106 | http://www.mmm.ucar.edu/wrf/users/wrfv3/updates-3.0.1.html. |
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| 107 | |
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| 108 | Online User's Guides have also been updated. |
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| 109 | |
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| 110 | ====================================== |
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| 111 | |
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| 112 | V3.0 Release Notes: |
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| 113 | ------------------ |
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| 114 | |
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| 115 | - For directions on compiling WRF, see below or Users Web page. |
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| 116 | - For more information on WRF V3 release, visit WRF Users home page |
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| 117 | http://www.mmm.ucar.edu/wrf/users/ |
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| 118 | - WRF V3 works with WPS, and SI is no longer supported. |
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| 119 | Please see User' Guide for WPS. |
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| 120 | - WRF V3 executable does not work with wrfinput/wrfbdy produced by previous versions. |
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| 121 | - WRF V3 has removed one obsolete namelist variable, dyn_opt. Edit with caution. |
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| 122 | |
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| 123 | ====================================== |
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| 124 | |
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| 125 | WRF update history: |
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| 126 | |
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| 127 | - V2.0.1: May 21, 2004 |
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| 128 | - V2.0.2: June 3, 2004 |
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| 129 | - V2.0.3: Nov 12, 2004 |
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| 130 | V2.0.3.1: Dec 3, 2004 |
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| 131 | - V2.1: August 4, 2005 |
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| 132 | - V2.1.1: Nov 8, 2005 |
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| 133 | - V2.1.2: Jan 27, 2006 |
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| 134 | - V2.2: Dec 21, 2006 |
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| 135 | - V2.2.1: Nov 1, 2007 |
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| 136 | - V3.0: April 4, 2008 |
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| 137 | - V3.0.1: August 5, 2008 |
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| 138 | - V3.0.1.1: August 22, 2008 |
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| 139 | - V3.1: April 9, 2009 |
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| 140 | - V3.1.1: July 31, 2009 |
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| 141 | - V3.2: March 31, 2010 |
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| 142 | - V3.2.1: August 18, 2010 |
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| 143 | - V3.3: April 6, 2011 |
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| 144 | |
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| 145 | ====================================== |
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| 146 | |
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| 147 | How to compile and run? |
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| 148 | ----------------------- |
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| 149 | |
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| 150 | - In WRFV3 directory, type 'configure' - this will create a configure.wrf |
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| 151 | file that has appropriate compile options for the supported computers. |
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| 152 | |
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| 153 | Note: WRF requires netCDF library. If your netCDF library is installed in |
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| 154 | some odd directory, set environment variable NETCDF before you type |
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| 155 | 'configure'. For example, |
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| 156 | |
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| 157 | setenv NETCDF /usr/local/netcdf-pgi |
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| 158 | |
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| 159 | - Type 'compile case_name' where you can find the case_names by simply typing |
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| 160 | compile. The following are available: |
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| 161 | |
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| 162 | compile em_b_wave |
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| 163 | compile em_grav2d_x |
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| 164 | compile em_heldsuarez |
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| 165 | compile em_hill2d_x |
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| 166 | compile em_les |
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| 167 | compile em_quarter_ss |
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| 168 | compile em_real |
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| 169 | compile em_seabreeze2d_x |
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| 170 | compile em_squall2d_x |
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| 171 | compile em_squall2d_y |
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| 172 | compile em_scm_xy |
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| 173 | compile em_tropical_cyclone |
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| 174 | |
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| 175 | - If sucessful, this will create either real.exe or ideal.exe and wrf.exe |
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| 176 | in directory main/, and the appropriate executables will be linked into |
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| 177 | the test directoires under test/case_name, or run/. |
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| 178 | |
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| 179 | - cd to the appropriate test or run directory to run ideal/real/wrf. |
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| 180 | |
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| 181 | - If it is one of the idealized cases (b_wave, hill2d_x, grav2d_x, quarter_ss, |
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| 182 | squall2d_x, squall2d_y, em_les or em_heldsuarez), cd the the appropriate directory, type |
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| 183 | |
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| 184 | ./ideal.exe |
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| 185 | |
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| 186 | to produce wrfinput_d01 file for wrf model. Then type |
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| 187 | |
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| 188 | ./wrf.exe |
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| 189 | |
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| 190 | to run. |
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| 191 | |
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| 192 | - If it is real-data case (real), place files from WPS (met_em.*) |
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| 193 | in the appropriate directory, type |
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| 194 | |
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| 195 | ./real.exe |
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| 196 | |
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| 197 | to produce wrfbdy_d01 and wrfinput_d01. Then type |
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| 198 | |
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| 199 | ./wrf.exe |
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| 200 | |
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| 201 | to run. |
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| 202 | |
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| 203 | - If you use mpich, type |
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| 204 | |
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| 205 | mpirun -np number-of-processors wrf.exe |
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| 206 | |
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| 207 | - For information on how to make nested runs, visit |
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| 208 | http://www.mmm.ucar.edu/wrf/users/ |
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| 209 | |
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| 210 | |
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| 211 | ====================================== |
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| 212 | |
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| 213 | What is in WRF V3? |
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| 214 | |
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| 215 | - Advanced Research WRF (ARW) solver: Eulerian mass, hydrostatic and non-hydrostatic |
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| 216 | * Arakawa C-grid staggering |
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| 217 | * Runge-Kutta 2nd and 3rd order timestep options |
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| 218 | * scalar-conserving flux form for prognostic variables |
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| 219 | * 2nd to 6th order advection options (horizontal and vertical) |
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| 220 | * time-split small step for acoustic modes |
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| 221 | * small step horizontally explicit, vertically implicit |
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| 222 | * divergence damping option and vertical time off-centering |
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| 223 | * external-mode filtering option for mass model |
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| 224 | * hydrostatic option via namelist option |
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| 225 | * positive-definite and monotonic advection for moisture, scalar, tke and chemical tracers |
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| 226 | * global modeling capability on latitude-longitude grid |
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| 227 | * digital filter initialization |
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| 228 | |
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| 229 | - Two-way nesting: |
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| 230 | * multiple domains and multiple nest levels |
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| 231 | * supports integer nest grid ratio |
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| 232 | * feedback option for both odd and even nest grid ratios |
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| 233 | * smoothing options |
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| 234 | |
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| 235 | - One-way nesting |
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| 236 | |
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| 237 | - Moving nest |
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| 238 | * Specified move |
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| 239 | * Automatic move using a mid-level vortex-following algorithm |
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| 240 | |
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| 241 | - Physics options: |
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| 242 | * microphysics (Kessler/ WRF Single Moment 3, 5 and 6 classes / Lin et al./ Mibrandt 2-moment / |
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| 243 | Eta Ferrier / Thompson / Goddard / 2-moment Morrison / WRF Double Moment 5 and 6 classes / |
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| 244 | SBU-Lin 5-classes ) |
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| 245 | * cumulus parameterization (Kain-Fritsch with shallow convection / |
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| 246 | Betts-Miller-Janjic / Grell-Devenyi ensemble / New Grell (with shallow convection option) / |
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| 247 | Tiedtke (with shallow conv and momentum transport) / NSAS (with shallow conv and momentum transport) / |
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| 248 | SAS (with shallow conv for ARW) / Zhang-McFarlane (with momentum transport) ) |
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| 249 | * UW shallow convection |
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| 250 | * planetary boundary layer (Yosei University / Mellor-Yamada-Janjic / ACM2 / QNSE / MYNN / BouLac / |
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| 251 | UW / TEMF ) |
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| 252 | * slab soil model (5-layer thermal diffusion / Noah land-surface model (4 levels) / |
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| 253 | RUC LSM (6 levels) / Pleim-Xu (2 levels) |
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| 254 | * Urban canopy model, BEP multi-layer and BEM (works with Noah LSM, BEP and |
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| 255 | BEM also requires MYJ or BouLac) |
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| 256 | * longwave radiation (RRTM / CAM / RRTMG / new Goddard ) |
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| 257 | * shortwave radiation (simple MM5 scheme / old Goddard / CAM / RRTMG / new Goddard), |
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| 258 | terrain slope and shading effect |
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| 259 | * sub-grid turbulence (constant K diffusion/ 2-D Smagorinsky/ predicted TKE / |
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| 260 | 2-D, 6th order diffusion / Nonlinear Backscatter Anisotropic (NBA) sub-grid turbulence stress for LES ) |
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| 261 | * Rayleigh damping for w at the upper boundary layer |
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| 262 | * gravity wave drag |
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| 263 | * land-use categories determine surface properties; support for 24 category USGS and |
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| 264 | 20 category MODIS (Noah LSM only in V3.1) |
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| 265 | * Options for modifying SST, sea ice, vegetation fraction, albedo, and deep soil temp |
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| 266 | for long simulations |
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| 267 | * fractional sea ice option for polar regions; modified snow/ice physics |
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| 268 | * single-column ocean mixed layer model |
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| 269 | * drag and enthalpy flux formulation for hurricane applications |
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| 270 | |
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| 271 | - Nudging: |
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| 272 | * three-dimensional and surface analysis nudging |
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| 273 | * observation nudging |
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| 274 | * spectral nudging |
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| 275 | |
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| 276 | - Software |
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| 277 | |
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| 278 | * Hierarchical software architecture that insulates scientific code |
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| 279 | (Model Layer) from computer architecture (Driver Layer) |
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| 280 | * Multi-level parallelism supporting shared-memory (OpenMP), distributed-memory (MPI), |
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| 281 | and hybrid share/distributed modes of execution |
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| 282 | * Active data registry: defines and manages model state fields, I/O, |
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| 283 | nesting, configuration, and numerous other aspects of WRF through a single file, |
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| 284 | called the Registry |
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| 285 | * Two-way nesting: |
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| 286 | Easy to extend: forcing and feedback of new fields specified by |
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| 287 | editing a single table in the Registry |
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| 288 | Efficient: 5-8% overhead on 64 processes of IBM |
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| 289 | Moving nests. |
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| 290 | * Enhanced I/O options: |
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| 291 | NetCDF and Parallel HDF5 formats |
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| 292 | Nine auxiliary input and history output streams separately controllable through the namelist |
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| 293 | Special input streams for analysis and observation nudging |
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| 294 | Output file names and time-stamps specifiable through namelist |
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| 295 | Special output stream for 3DVAR |
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| 296 | * Efficient execution on a range of computing platforms: |
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| 297 | IBM SP systems, (e.g. NCAR "bluevista","blueice","bluefire" Power5-based system) |
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| 298 | IBM Blue Gene |
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| 299 | SGI Origin and Altix |
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| 300 | Linux/Intel |
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| 301 | IA64 MPP (HP Superdome, SGI Altix, NCSA Teragrid systems) |
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| 302 | IA64 SMP |
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| 303 | x86_64 (e.g. TACC's "Ranger", NOAA/GSD "wJet" ) |
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| 304 | PGI, Intel, Pathscale, gfortran, g95 compilers supported |
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| 305 | Sun Solaris (single threaded and SMP) |
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| 306 | Cray X1, X1e (vector), XT3/4 (Opteron) |
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| 307 | Mac Intel/ppc, PGI/ifort/g95 |
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| 308 | NEC SX/8 |
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| 309 | HP-UX |
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| 310 | Fujitsu VPP 5000 |
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| 311 | * RSL_LITE: communication layer, scalable to very large domains, supports nesting. |
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| 312 | * I/O: NetCDF, parallel NetCDF (Argonne), HDF5, GRIB, raw binary, Quilting (asynchronous I/O), MCEL (coupling) |
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| 313 | * ESMF Time Management, including exact arithmetic for fractional |
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| 314 | time steps (no drift). |
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| 315 | * ESMF integration - WRF can be run as an ESMF component. |
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| 316 | * Improved documentation, both on-line (web based browsing tools) and in-line |
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| 317 | |
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