Dear Ferreters,
I was wondering what this time axis is: It starts from "01-JAN-0001 00:00:00" and it doesn't include any CALENDAR attribute. I paste the output from "ncdump -h" below.
I thought the default calendar is Gregorian or similar, but the timeseries doesn't include any leap year. It covers from 1990-01-01 to 1997-12-31 but there is no Februrary 29 in the listing of list t[gt=eta] .
So, I suppose it's a 365-year (no-leap) calendar. Does "01-JAN-0001 00:00:00" signify the no-leap (365-day) calendar?
I worry about this, because my next step is to construct a daily climatology:
The climatological time axis shown in the above instructions doesn' have a CALENDAR attribute, either.
So, supposing that I use this climatological axis
DEFINE AXIS/T=0:365/EDGES/NPOINTS=365/T0=1-JAN-0001/UNITS=DAYS/MODULO daily
to construct my daily climatology, does the time "1-JAN-1990 00:00:00" of the original data match "1-JAN 00:00:00" of the climatological axis? If one time axis is Gregorian and the other is 365-day, these two dates shouldn't match.
Ryo
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double TIME(TIME) ;
TIME:units = "days since 0001-01-01 00:00:00" ;
TIME:long_name = "time" ;
TIME:time_origin = "01-JAN-0001 00:00:00" ;
TIME:axis = "T" ;
TIME:standard_name = "time" ;
TIME:bounds = "TIME_bnds" ;
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