WRF ARW User's Guide - MMM - UCAR

5. FROM_INPUT : A character string used to compare against the values in the fg_name
namelist variable; if from_input is specified, the containing table section will only be
used when the time-varying input source has a filename that contains the value of
from_input as a substring. Thus, from_input may be used to specify different
interpolation options for the same field, depending on which source of the field is being
processed. No default value.
6. OUTPUT_STAGGER : The model grid staggering to which the field should be
interpolated. For ARW, this must be one of U, V, and M; for NMM, this must be one of HH
and VV. Default value for ARW is M; default value for NMM is HH.
7. IS_U_FIELD : Either yes or no, indicating whether the field is to be used as the wind
U-component field. For ARW, the wind U-component field must be interpolated to the U
staggering (output_stagger=U); for NMM, the wind U-component field must be
interpolated to the V staggering (output_stagger=VV). Default value is no.
8. IS_V_FIELD : Either yes or no, indicating whether the field is to be used as the wind
V-component field. For ARW, the wind V-component field must be interpolated to the V
staggering (output_stagger=V); for NMM, the wind V-component field must be
interpolated to the V staggering (output_stagger=VV). Default value is no.
9. INTERP_OPTION : A sequence of one or more names of interpolation methods to be
used when horizontally interpolating the field. Available interpolation methods are:
average_4pt, average_16pt, wt_average_4pt, wt_average_16pt,
nearest_neighbor, four_pt, sixteen_pt, search, average_gcell(r); for the grid
cell average method (average_gcell), the optional argument r specifies the minimum
ratio of source data resolution to simulation grid resolution at which the method will be
applied; unless specified, r = 0.0, and the option is used for any ratio. When a sequence
of two or more methods are given, the methods should be separated by a + sign. Default
value is nearest_neighbor.
10. INTERP_MASK : The name of the field to be used as an interpolation mask, along
with the value within that field which signals masked points. A specification takes the
form field(maskval), where field is the name of the field and maskval is a real value.
Default value is no mask.
11. INTERP_LAND_MASK : The name of the field to be used as an interpolation mask
when interpolating to water points (determined by the static LANDMASK field), along
with the value within that field which signals land points. A specification takes the form
field(maskval), where field is the name of the field and maskval is a real value. Default
value is no mask.
12. INTERP_WATER_MASK : The name of the field to be used as an interpolation
mask when interpolating to land points (determined by the static LANDMASK field),
along with the value within that field which signals water points. A specification takes
WPS
WRF-ARW V3: User’s Guide 3-49