/[MITgcm]/manual/s_phys_pkgs/text/cal.tex
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revision 1.1 by heimbach, Thu Jul 14 21:04:52 2005 UTC revision 1.2 by molod, Mon Jul 18 20:45:27 2005 UTC
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1  \section{CAL: The calendar package  \subsection{CAL: The calendar package
2  \label{sectioncal}}  \label{sectioncal}}
3  \begin{rawhtml}  \begin{rawhtml}
4  <!-- CMIREDIR:sectioncal: -->  <!-- CMIREDIR:sectioncal: -->
# Line 17  are still pending e.g. the availability Line 17  are still pending e.g. the availability
17  to be able to resolve fractions of a second, and to have a time-  to be able to resolve fractions of a second, and to have a time-
18  step that is longer than one day.  step that is longer than one day.
19    
20  \subsection{Basic assumptions for the calendar tool}  \subsubsection{Basic assumptions for the calendar tool}
21    
22      It is assumed that the SMALLEST TIME INTERVAL to be resolved is      It is assumed that the SMALLEST TIME INTERVAL to be resolved is
23      ONE SECOND.      ONE SECOND.
# Line 29  step that is longer than one day. Line 29  step that is longer than one day.
29      Not each individual routine depends on these assumptions; there      Not each individual routine depends on these assumptions; there
30      are only a few places where they enter.      are only a few places where they enter.
31    
32  \subsection{Format of calendar dates}  \subsubsection{Format of calendar dates}
33    
34      In this calendar tool a complete date specification is defined      In this calendar tool a complete date specification is defined
35      as the following integer array:      as the following integer array:
# Line 62  c               refdate(3) =        1 Line 62  c               refdate(3) =        1
62  c               refdate(4) =        1  c               refdate(4) =        1
63  \end{verbatim}  \end{verbatim}
64    
65  \subsection{Calendar dates and time intervals}  \subsubsection{Calendar dates and time intervals}
66    
67      Subtracting calendar dates yields time intervals.      Subtracting calendar dates yields time intervals.
68      Time intervals have the following format:      Time intervals have the following format:
# Line 80  c           datediff(4) =     -1 Line 80  c           datediff(4) =     -1
80      calendar dates. Time intervals can be added to and be      calendar dates. Time intervals can be added to and be
81      subtracted from each other.      subtracted from each other.
82    
83  \subsection{Using the calendar together with MITgcm}  \subsubsection{Using the calendar together with MITgcm}
84    
85      Each routine has as an argument the thread number that it is      Each routine has as an argument the thread number that it is
86      belonging to, even if this number is not used in the routine      belonging to, even if this number is not used in the routine
# Line 128  c         #endif Line 128  c         #endif
128      than checkpoint 25 which do not have the global variable      than checkpoint 25 which do not have the global variable
129      *nEndIter*.      *nEndIter*.
130    
131  \subsection{The individual calendars}  \subsubsection{The individual calendars}
132    
133  \subsubsection{Simple model calendar}  Simple model calendar:
134    
135            This calendar can be used by defining            This calendar can be used by defining
136    
# Line 143  c                  TheCalendar='model' Line 143  c                  TheCalendar='model'
143            In this case a year is assumed to have 360 days. The            In this case a year is assumed to have 360 days. The
144            model year is divided into 12 months with 30 days each.            model year is divided into 12 months with 30 days each.
145    
146  \subsubsection{Gregorian Calendar}  Gregorian Calendar:
147    
148            This calendar can be used by defining            This calendar can be used by defining
149    
# Line 153  c                  TheCalendar='gregoria Line 153  c                  TheCalendar='gregoria
153    
154            in the calendar's data file "data.cal".            in the calendar's data file "data.cal".
155    
156  \subsection{Short routine description}  \subsubsection{Short routine description}
157    
158  {\footnotesize  {\footnotesize
159  \begin{verbatim}  \begin{verbatim}
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