Merge branch 'master_levante' into develop

.gitignore

ci/requirements_py39.yml

config_ckdtree/config_ckdtree_r2b4_oce_r0004.py

config_ckdtree/config_ckdtree_r2b6_oce_r0004.py

config_ckdtree/config_ckdtree_r2b8_oce_r0004.py

config_ckdtree/convert_npz_to_nc.py

config_qp_compare/config_r2b6_idemix_levante.py

config_qp_compare/nidoall_qp_compare.sh

pyicon/pyicon_plotting.py

pyicon/pyicon_tb.py

pyicon/quickplots/nidoall_qp_compare.sh

pyicon/quickplots/qp_compare.py

pyicon/quickplots/qp_driver_new_oce_output.py

tools/act_pyicon_py39.sh

tools/pyic_fig.py