[gradsusr] Control file for nc file from CMIP5

[syairah atiqah atiq]

Dear grads experts,
Anyone has an experience deal with CMIP5 data? I need help. I downloaded nc. file from CMIP5 model. However when I try to open it using sdfopen, it's error. Below what the grads said:
sdfopen C:\Users\atiqah\Downloads\sic_OImon_MIROC5_historical_r1i1p1_185001-201212.ncScanning self-describing file:  C:\Users\atiqah\Downloads\sic_OImon_MIROC5_historical_r1i1p1_185001-201212.ncSDF Error: 365 day calendars are no longer supported by sdfopen.  To open this file with GrADS, use a descriptor file with  a complete TDEF entry and OPTIONS 365_day_calendar.  Documentation is at http://iges.org/grads/gadoc/SDFdescriptorfile.html
what should I do? did I need do the control file?  
dset   C:\Users\atiqah\Downloads\sic_OImon_MIROC5_historical_r1i1p1_185001-201212.ncundef  -9.99e+33title   Sea ice area fractionxdef   ydef   zdef   1 levels 0tdef   163 linear 00z01JAN1980 1monOPTIONSvars 1sic  0 99 summer [%]endvars
Thank youAtiqah
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