Problem in determining time dimension in netcdf file

Hello:

I am analyzing EURO CORDEX wind data for 1979 - 01-01-1979-12-30 period. The time dimension of the associated netcdf file is attached here. If I do ncdisp of the netcdf file, I get following message:

Format:
           netcdf4_classic
Dimensions:
           time = 1440  (UNLIMITED)
Variables:
    time
           Size:       1440x1
           Dimensions: time
           Datatype:   double
           Attributes:
                       standard_name = 'time'
                       long_name     = 'time'
                       bounds        = 'time_bnds'
                       units         = 'days since 1949-12-01 00:00:00'
                       calendar      = '360_day'
                       axis          = 'T'

I need to calculate number of minutes from 1979-01-01 since the first time stamp. I tried foll. ways:

 time = ncread(sprintf('%s%s',fullfile(dir_input),'\uas\uas_EUR-11_MOHC-HadGEM2-ES_historical_r1i1p1_SMHI-RCA4_v1_3hr_197901010000-197912302100_6hrly.nc'),'time');   
 t = datenum(1949,12,01,double(time),0,0);
 refdatenum     = datenum(1979,1,1);
 time2 = (t(1,1)-refdatenum)*24*60

But I am always end up with negative values. I suppose to get 6-hourly wind output from 1979 onwards. Any help will be deeply appreciated. Thanks,

Answer 1

[Walter Roberson]

You are putting the input values into the hours slot instead of the days slot.

minutes(datetime(1949,12,1) + time - datetime(1979,1,1))