[ncl-talk] Error on relative units conversion, string = day as %Y%m%d.%f

[Thomas Tobian]

Hallo,

Anyone know how to solve the problem with my historical model data, 1850 to
1875:
'
      institution : Max-Planck-Institute for Meteorology
      CDO : Climate Data Operators version 1.5.9 (
http://code.zmaw.de/projects/cdo)
   dimensions:
      lon = 192
      lat = 96
      lev = 1
      time = 9496  // unlimited
   variables:
      double lon ( lon )
         standard_name :        longitude
         long_name :    longitude
         units :        degrees_east
         axis : X

      double lat ( lat )
         standard_name :        latitude
         long_name :    latitude
         units :        degrees_north
         axis : Y

      double lev ( lev )
         standard_name :        air_pressure
         long_name :    pressure
         units :        Pa
         positive :     down
         axis : Z

      double time ( time )
         standard_name :        time
         units :        day as %Y%m%d.%f
         calendar :     proleptic_gregorian

      float var131 ( time, lev, lat, lon )
         table :        128
         grid_type :    gaussian

I got errors once I tried to subset the data using NCL as follows:

f1 = addfile ("day_data.1850.to.1875.131.25000.ano.nc","r")
ymdStrt  = 18500101
ymdLast = 18751231
time    = f2->time


*ymd     = cd_calendar(time,-2)CDMS error: Error on relative units
conversion, string = day as %Y%m%d.%f*


*CDMS error: Error on time conversion: invalid month = 3664*
;======

ncl 9> print(time)


Variable: time
Type: double
Total Size: 75968 bytes
            9496 values
Number of Dimensions: 1
Dimensions and sizes:   [time | 9496]
Coordinates:
            time: [18500101.75..18751231.75]
Number Of Attributes: 3
  standard_name :       time
  units :       day as %Y%m%d.%f
  calendar :    proleptic_gregorian
(0)     18500101.75
(1)     18500102.75
(2)     18500103.75
(3)     18500104.75
(4)     18500105.75
(5)     18500106.75
(6)     18500107.75
(7)     18500108.75
(8)     18500109.75
(9)     18500110.75
(10)    18500111.75
(11)    18500112.75
(12)    18500113.75


Thank you
-- Thomas
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