5. Configuration

5.1. Default Datasets and Namelists

5.1.1. Hurricane Matthew Test Case

5.1.1.1. WPS Namelist

Use this namelist.wps file when running WPS for the Hurricane Matthew case, from the GitHub repository.

Note that you will need to update geog_data_path, opt_geogrid_tbl_path, and opt_metgrid_tbl_path for your machine/environment to point to locations of the WPS_GEOG dataset, GEOGRID.TBL, and METGRID.TBL files, respectively. WPS_GEOG is a large static dataset of geographic data that is required for geogrid.exe to run (see: https://www2.mmm.ucar.edu/wrf/OnLineTutorial/Basics/GEOGRID/ter_data.php). GEOGRID.TBL and METGRID.TBL are typically found in the geogrid/ and metgrid/ directories inside the WPS installation directory.:

&share
 wrf_core = 'ARW',
 max_dom = 1,
 start_date = '2016-10-06_00:00:00','2019-09-04_12:00:00',
 end_date   = '2016-10-08_00:00:00','2019-09-04_12:00:00',
 interval_seconds = 21600,
/

&geogrid
 parent_id         =   1,   1,
 parent_grid_ratio =   1,   3,
 i_parent_start    =   1,  53,
 j_parent_start    =   1,  25,
 e_we              =  91, 220,
 e_sn              = 100, 214,
 geog_data_res = 'default','default',
 dx = 27000,
 dy = 27000,
 map_proj = 'mercator',
 ref_lat   =  28.00,
 ref_lon   = -75.00,
 truelat1  =  30.0,
 truelat2  =  60.0,
 stand_lon = -75.0,
 geog_data_path = '/glade/work/wrfhelp/WPS_GEOG/'
 opt_geogrid_tbl_path = '/glade/u/home/jaredlee/programs/WPS-4.5-serial-intel/geogrid/',
/

&ungrib
 out_format = 'WPS',
 prefix = 'FILE',
/

&metgrid
 fg_name = 'FILE'
 opt_metgrid_tbl_path = '/glade/u/home/jaredlee/programs/WPS-4.5-serial-intel/metgrid/',
/

5.1.1.2. WRF Namelist and Other Config Files

Use this namelist.input file when running WRF for the Hurricane Matthew case, from the GitHub repository.

Note that the iofields_filename variable points to a file called vars_io.txt. This file adds or removes WRF variables from various output (history) streams (stream 0 is the default history stream). Note also that the auxhist22* and auxhist23* variables are specified for the height-level and pressure-level diagnostics, respectively. The levels at which to write out those height-level and pressure-level diagnostics are specified in the &diags namelist, and vars_io.txt also changes which variables are written to these files from the default settings for streams 22 and 23. METplus expects to find the wrfout_plev* files in order to do upper-air verification against radiosonde observations at mandatory pressure levels.

Use this vars_io.txt file for the Hurricane Matthew case, from the GitHub repository.

5.1.1.3. METplus Config File

For the METplus configuration file for the Hurricane Matthew case, please use this file on the GitHub repository.

5.1.2. Land Usage/Land Cover Change Case

The WPS namelist, WRF namelist, METplus configurations, and other configurations can all be found in the GitHub repository:

https://github.com/NCAR/i-wrf/tree/main/use_cases/Land_Use_Land_Cover