WhatIs: The raz date parameter

The raz_date parameter is an integer flag (usually in the run.def file) which can be set to 0 (its default value) to let the model use the date read in the start.nc file as an initial date for the run (and thus technically continue time marching where it had left off at the previous simulation) or, if set to 1, reset the date manually.

(raz is French shorthand for "Remise à zéro", i.e. reset to zero)

If resetting the calendar with raz_date=1, then the user should also provide the following relevant information in run.def:

• anneeref=... : calendar year (default=1998; why not? have to start somewhere...)
• dayref=... : day of the year at which the simulation starts (default=1; i.e. first day of the year)
• starttime=... : hour at which the simulation begins (default=0 ; i.e. midnight at longitude 0)

05/07/2022