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Hack to reuse a ā-cā case to run multiple experiments used in MVK and PGN tests does not work. For TSC, during the RUN phase, the user_nl_eam_???? ensemble member namelists will be created anew by cime/scripts/lib/CIME/SystemTests/tsc.py. This script can be edited to append user_nl_eam to each user_nl_eam_???? file ( gist for tsc.py patch file ) , and then one can set parameters in user_nl_eam.
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