CICE grid misaligned in some 0.1 deg configurations

[aekiss]

As noticed by @russfiedler here https://arccss.slack.com/archives/C9Q7Y1400/p1583821852038600
the CICE grid is misaligned in some 0.1 deg configurations, with U points located at the SE corner of T cells instead of the NE corner. As a consequence there are no U cells along the tripole fold (which should be along U points, since we use ns_boundary_type=‘tripole’).

The faulty CICE grid.nc files are

-rw-rwxr--+ 1 aph502 ik11 2021785208 Dec 13  2018 /g/data/ik11/inputs/access-om2/input_236a3011/cice_01deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 2021785208 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_2407a7bc/cice_01deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 2021785208 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_2f3648a7/cice_01deg/grid.nc
-r--rwxr--+ 1 aph502 ik11 2021785208 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_337f4505/cice_01deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 2021785208 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_38570c62/cice_01deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 2021785208 Jun  4  2018 /g/data/ik11/inputs/access-om2/input_46fb3d3b/cice_01deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 2021785208 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_a3373a31/cice_01deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 2021785208 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_b72797e1/cice_01deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 2021785208 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_eee21b65/cice_01deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 2021785208 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_ff9890e2/cice_01deg/grid.nc

which are all identical.

The remaining, newer files

-rw-rwxr--+ 1 aph502 ik11 2021777063 Feb  8  2019 /g/data/ik11/inputs/access-om2/input_08022019/cice_01deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 2021777063 Feb  8  2019 /g/data/ik11/inputs/access-om2/input_rc/cice_01deg/grid.nc

are identical and are not affected.

This problem affects /g/data/hh5/tmp/cosima/access-om2-01/01deg_jra55v13_iaf (used for Kiss et al., 2020) and /g/data/hh5/tmp/cosima/access-om2-01/01deg_jra55v13_ryf8485_spinup6* and other runs of that era.

The more recent RYF spinup /g/data/hh5/tmp/cosima/access-om2-01/01deg_jra55v13_ryf9091 and the master branches of current RYF and IAF configurations https://github.com/COSIMA/01deg_jra55_ryf and https://github.com/COSIMA/01deg_jra55_iaf (and their minimal variants) are not affected, since they use /g/data/ik11/inputs/access-om2/input_08022019/cice_01deg/grid.nc.

[aekiss]

Closing, as this is fixed in the current configurations.

[aekiss]

Also note that this problem does not affect any of the 1deg or 0.25deg CICE grid.nc files

-rw-rwxr--+ 1 aph502 ik11 24193916 Feb  8  2019 /g/data/ik11/inputs/access-om2/input_08022019/cice_1deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 24193916 Dec 13  2018 /g/data/ik11/inputs/access-om2/input_236a3011/cice_1deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 24193916 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_2407a7bc/cice_1deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 24193916 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_2f3648a7/cice_1deg/grid.nc
-r--rwxr--+ 1 aph502 ik11 24193916 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_337f4505/cice_1deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 24193916 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_38570c62/cice_1deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 24193916 Jun  4  2018 /g/data/ik11/inputs/access-om2/input_46fb3d3b/cice_1deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 24193916 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_a3373a31/cice_1deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 24193916 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_b72797e1/cice_1deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 24193916 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_eee21b65/cice_1deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 24193916 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_ff9890e2/cice_1deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 24193916 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_rc/cice_1deg/grid.nc

or

-rw-rwxr--+ 1 aph502 ik11 124430102 Feb  8  2019 /g/data/ik11/inputs/access-om2/input_08022019/cice_025deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 124430102 Dec 13  2018 /g/data/ik11/inputs/access-om2/input_236a3011/cice_025deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 124430102 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_2407a7bc/cice_025deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 124430102 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_2f3648a7/cice_025deg/grid.nc
-r--rwxr--+ 1 aph502 ik11 124430102 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_337f4505/cice_025deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 124430102 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_38570c62/cice_025deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 124430102 Jun  4  2018 /g/data/ik11/inputs/access-om2/input_46fb3d3b/cice_025deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 124430102 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_a3373a31/cice_025deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 124430102 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_b72797e1/cice_025deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 124430102 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_eee21b65/cice_025deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 124430102 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_ff9890e2/cice_025deg/grid.nc
-rw-rwxr--+ 1 aph502 ik11 124430102 Jun  9  2018 /g/data/ik11/inputs/access-om2/input_rc/cice_025deg/grid.nc

(these are all identical at each resolution)