8.3.4 Using the calendar together with MITgcm

Each routine has as an argument the thread number that it is belonging to, even if this number is not used in the routine itself.

In order to include the calendar tool into the MITgcm setup the MITgcm subroutine "initialise.F" or the routine "initilise_fixed.F", depending on the MITgcm release, has to be modified in the following way:

c         #ifdef ALLOW_CALENDAR
c         C--   Initialise the calendar package.
c         #ifdef USE_CAL_NENDITER
c               CALL cal_Init(
c              I               startTime,
c              I               endTime,
c              I               deltaTclock,
c              I               nIter0,
c              I               nEndIter,
c              I               nTimeSteps,
c              I               myThid
c              &             )
c         #else
c               CALL cal_Init(
c              I               startTime,
c              I               endTime,
c              I               deltaTclock,
c              I               nIter0,
c              I               nTimeSteps,
c              I               myThid
c              &             )
c         #endif
c               _BARRIER
c         #endif

It is useful to have the CPP flag ALLOW_CALENDAR in order to switch from the usual MITgcm setup to the one that includes the calendar tool. The CPP flag USE_CAL_NENDITER has been introduced in order to enable the use of the calendar for MITgcm releases earlier than checkpoint 25 which do not have the global variable *nEndIter*.

Copyright © 2002 Massachusetts Institute of Technology