File parm/hwrf_43lev.conf

Enables the older HWRF 43-level vertical structure.

Enables 2013 HWRF-WPAC vertical structure and disable GSI. GSI cannot run with this vertical structure because the model top is too low. Also enables a smaller timestep, and changes ntrack to match. Note that this is exactly the same as hwrf_other_basins.conf, except that this file retains ocean coupling.

Note

If you also use the hwrf_3km.conf, you must load this file first.

This is a configuration override file. This file sets options in the following sections:

• [config] — Sets basic configuration options used by all components.
• [moad_namelist] — Extra per-domain WRF namelist settings for all nests.
• [namelist_inner] — Extra per-domain WRF namelist settings for all nests.
• [namelist_outer] — Extra per-domain WRF namelist settings for all nests.
• [prelaunch] — Configure the prelaunch configuration overrides, run in hwrf_expt, and implemented in hwrf.prelaunch
• [wrf] — Set a few variables that the Python code must be aware of to communicate correctly between HWRF components. These will also be used to calculate or set the appropriate WPS and WRF namelist values:
• [wrf_namelist] — This section sets WRF namelist variables that are NOT on a per-domain basis.

Section [wrf]

Set a few variables that the Python code must be aware of to communicate correctly between HWRF components. These will also be used to calculate or set the appropriate WPS and WRF namelist values:

See the main documentation for [wrf] for details.

Options in this section:

• ptop — Lower model top: 50 mbar
• ptsgm — This value used in 2013 in WP, IO basins.
• dt — Smaller model timestep: 33+3/4 seconds.

[wrf] ptop

Lower model top: 50 mbar

[wrf]
ptop = 5000

Defined in File parm/hwrf_43lev.conf

[wrf] ptsgm

This value used in 2013 in WP, IO basins.

[wrf]
ptsgm = 20000

Defined in File parm/hwrf_43lev.conf

[wrf] dt

Smaller model timestep: 33+3/4 seconds.

[wrf]
dt = 33+3/4

Some storms need a smaller timestep for model stability when running at 2km. This timestep is NOT compatible with the ntrack values set in the hwrf_3km.conf, so you MUST load the hwrf_3km.conf later than this file to ensure the timestep is 45 seconds.

Defined in File parm/hwrf_43lev.conf

Section [moad_namelist]

Extra per-domain WRF namelist settings for all nests.

See the main documentation for [moad_namelist] for details.

Section [prelaunch]

Configure the prelaunch configuration overrides, run in hwrf_expt, and implemented in hwrf.prelaunch

See the main documentation for [prelaunch] for details.

Options in this section:

• hwrf_43lev_conf — Indicate hwrf_43lev.conf was loaded
• last_of_43lev_3km — Used to detect loading this file after hwrf_3km.conf

[prelaunch] hwrf_43lev_conf

Indicate hwrf_43lev.conf was loaded

[prelaunch]
hwrf_43lev_conf = yes

Defined in File parm/hwrf_43lev.conf

[prelaunch] last_of_43lev_3km

Used to detect loading this file after hwrf_3km.conf

[prelaunch]
last_of_43lev_3km = 43lev

Defined in File parm/hwrf_43lev.conf

Section [namelist_outer]

Extra per-domain WRF namelist settings for all nests.

See the main documentation for [namelist_outer] for details.

Section [namelist_inner]

Extra per-domain WRF namelist settings for all nests.

See the main documentation for [namelist_inner] for details.

Section [wrf_namelist]

This section sets WRF namelist variables that are NOT on a per-domain basis.

See the main documentation for [wrf_namelist] for details.

Section [config]

Sets basic configuration options used by all components.

See the main documentation for [config] for details.

Options in this section:

• run_gsi — cannot run GSI with this vertical structure
• run_ensemble_da — Disable ENSDA since GSI is disabled

[config] run_gsi

cannot run GSI with this vertical structure

[config]
run_gsi = no

Defined in File parm/hwrf_43lev.conf

[config] run_ensemble_da

Disable ENSDA since GSI is disabled

[config]
run_ensemble_da = no

Defined in File parm/hwrf_43lev.conf