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Initialization files are written out from a previous CESM simulation and specify initial states of chemical fields, instead of spinning up from zero. Another option is to use the default initialization file, perform a one-year spin up and re-initialize with the output from that simulation to minimize the initial condition influence.
4. SST: If running for recent dates, the sea surface temperature file may not cover your interested dates and you may need to change it. If you need to change it, the most recent version is described below.
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