[MITgcm-support] to give delX=360*0.25, delY=360*0.25 in curvilinear coordinates in MITgcm

[Yi-Chih Huang]

Hello,

    We conduct idealized simulations to study atmospheric convection near
the north pole.  To avoid the singularity problem in spherical coordinates,
we are interested in curvilinear orthogonal coordinates in MITgcm.  I don't
need blank tile and do not include exch2 in cope/packages.conf.  I use MPI
to expedite running processes.  If I didn't specify delX and delY or gave
the delX and delY below in the data file, I got normal end after execution
the mitgcmuv.  When giving delX=360*0.25, delY=360*0.25, I got the error
message looking for tile002.mitgrid as the following.  How to explain
these?  In the manual it said the grid spacing can not be set via the
namelist; instead, the grid descriptors are read from data files, one for
each descriptor.  The forcing data is Tinit.bin so we don't need extra
external forcing as exf.package.  I wonder what is the right way to give
delX=360*0.25, delY=360*0.25 in curvilinear coordinates in MITgcm?

forrtl: severe (29): file not found, unit 9, file
/project/6001267/MITgcm/MITgcm_c66k/verification/rotating_tank2/run_n_360/tile002.mitgrid

# Gridding parameters
 &PARM04
 usingCurvilinearGrid=.TRUE.,
 deepAtmosphere=.TRUE.,
 rSphere=60000.E3,
 delR=50*200.E3,
 delX=320*0.25,
 delY=320*0.25,
 ygOrigin=0.,
 &

    Thanks much,

                         Yi-Chih
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