The standard version of the QTCM1 provides coverage from 
S
to N in latitude
and coverage over all longitudes. The grid has
dimensions 
equal
to 64 
32. The east/west boundaries are periodic, and the
north/south boundaries are solid walls, with sponge
layers from 
S to S,
and N to N.
Thus, the grid spacing is 5.625 [i.e. 
] degrees
longitude and 3.75 [i.e. 
] degrees latitude.
Following FORTRAN convention, the first index increments in the zonal (x)
direction with increasing longitude in the eastward direction, beginning at
0 degrees E longitude. The second index increments in the meridional (y)
direction with increasing latitude northward, beginning at 
S
latitude (i.e. 
latitude). Thus:
grid box (1,1) is centered at 
E longitude,
latitude
grid box (2,1) is centered at 
E longitude,
latitude
grid box (2,2) is centered at E longitude,
latitude
grid box ( 
)
is centered at 
E longitude,
latitude
The spatial array sizes NX and NY are
set in the header file hgrid.h.
Higher resolution can be easily achieved by modifying hgrid.h and
subroutine parinit. Higher resolution boundary data sets can be created
using a package released along with this version of model. See
Section 
for details.
Section has a more complete description of the
model grid.
A new parameter YB is added in the hgrid.h. It specifies the meridional
boundary of model domain in degrees. Therefore, the domain is stretchable up
to poles. However, model performance is sensitive to certain parameters when
the global domain is used. Further tests are needed, since some of the
approximations used in the parameterizations may be outside their domain of
validity at high latitudes.