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Hi
ferreters, I would like to calculate the annual mean of the SST variable (example)
simulated by ROMS, from daily values. For a “Gregorian simulation”, I have used the following
lines, found in the Ferret documentation: DEFINE AXIS/EDGES/T0=01-jan-1900/UNITS=days years=DAYS1900(X[i=1998:2010:1],1,1) save/append/file="ROMS-SST-BISCAY-HC-TSeries.nc"
SST[d=1,X=-10:-0.5@ave,Y=42:49@ave,gt=years] it works, and I change the name and unit of the time axis after. I have to do the same but with a “360_day simulation” from
1980 to 2000. I have used: DEFINE AXIS/EDGES/T0=01-jan-1900/UNITS=days/calendar=360_day years=DAYS1900(X[i=1980:2001:1],1,1) But it does not work as days1900 is a function using the Gregorian calendar. The results show 21 points (= 21 years) on the time axis, from September
1981 to December 2001 (instead of July 1980 to July 2000). Moreover, the SST
value decreases along the time (as if I test this with chla) while observing
the daily values, the SST does not show any decreasing tendency (because of a gap
I assume?). Is there any other solution to calculate annual means form daily data,
using a 360_day calendar? Thanks a lot for the help. _____________________________________________ Dr AZTI
- Tecnalia / Marine research Division |