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The main_nml namelist contains options relating to the frequency at which data is saved. Some of the most common options are described below.

Options

days

integer
Data is saved after this many days.
E.g. if days=10, the first output folder run0001 will contain data for the first 10 days of the simulation.
Can also use the options hours, minutes and seconds if you want to increase the precision in this duration.
Must be specified, typical would be 30.
Default: 0

calendar

string
Specifies the calendar used for the experiment.
Options are thirty_day, julian, noleap or no_calendar.
Typical is thirty_day which means months of \(30\) days each so a year would be \(360\) days. Default: N/A

dt_atmosphere

integer
Duration of each time step in the simulation (seconds).
Must be specified, typical would be 720.
Default: 0

current_date

list - integer
The start date of the simulation.
Not exactly sure, but I think the 6 values are [Year, Month, Day, Hour, Minute, Second].
In the example experiments, they use [1,1,1,0,0,0] and [2000,1,1,0,0,0].
Default: [0,0,0,0,0,0]