Namelist Variables

Namelist Variable Contents

Introduction


The following tables provide namelist.input variable options and descriptions. Not all namelist parameters require an entry for each domain, and doing so can cause an error during processing. In the tables provided, note whether variables are a “single entry” or “max_dom” entry, where “max_dom” indicates a value is expected for each domain. Additional resources for namelist descriptions and recommendations can be found in

  • Registry/* files

  • run/README.namelist (or test/em_real/README.namelist)

  • test/em_real/examples.namelist

Click the following to see specific namelists.

Namelist Parameter

Default Setting

Description

Single Entry or entry for each pressure level (max_plevs or max_zlevs)

p_lev_diags

0

set to =1 to output pressure level diagnostics

single entry

num_press_levels

0

number of pressure levels

single entry

press_levels

0

specifically state the desired pressure levels (in Pa); one per num_press_levels

max_plevs

use_tot_or_hyd_p

2

pressure option;

=1:use total pressure; =2:use hydrostatic pressure

single entry

p_lev_missing

-999

missing value below ground

single entry

z_lev_diags

0

set to =1 to vertically interpolate diagnostics to z-levels

single entry

num_z_levels

0

number of height levels to interpolate to

single entry

z_levels

0

list of height values (in meters) to interpolate data to; positive numbers are for heights above mean sea level (i.e., a flight level); negative numbers are for levels above ground

max_zlevs

z_lev_missing

-999

missing value below ground

single entry

extrap_below_grnd

1

method used for extrapolating below ground,

=1 : no extrapolation, =2 : extrapolate adiabatically

single entry

solar_diagnostics

0

set to =1 to turn on solar forecasting diagnostics for additional solar-related outputs; see full description in the “output diagnostics” section of the WRF Users’ Guide; new since V4.2

single entry