[Wrf-users] WRF-NMM land Sea mask in nested domains
Dr. Sebastian Wahl
wahl at wetterwelt.de
Wed Sep 29 09:29:55 MDT 2010
I'm trying to use high a high resolution land sea mask on the nested
grids. Apparently this is not possible with WRF-NMM (it works with
WRF-ARW, but I like to use WRF-NMM for various reasons) as the land sea
mask gets interpolated from the coarsest grid onto the nested grids. In
the WRF-NMM Users guide I found the following paragraph:
"When a nest is initialized, its topography is obtained from the static
file created for that nest level by the WPS (see Chapter 3). Topography
is the only field used from the static file. All other information for
the nest is obtained from the lower-resolution parent domain. Land
variables, such as land-sea mask, SST, soil temperature and moisture are
obtained through a nearest-neighbor approach."
Is there a way to use the high resolution land sea mask from the geogrid
files in the nests instead of interpolating from the coarsest grid? I
can't imagine that there is no option to read a high resolution landmask
for the nested grids.
Any help is appreciated.
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