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Long time series from individual files trouble.....



Hi,
 
I create a descriptor file air_mc.des for desplay a single time series from two NetCDF files, air.2003.nc and air.2004.nc.
But I have a trouble of time range.
 
Following is the metadata of air_mc.des, air.2003.nc, air.2004.nc shown by Ferret-5.7:
 
----
yes? show data/full
     currently SET data sets:
    1> ./air.2003.nc
     mean daily NMC reanalysis (2003)
 name     title                             I         J         K         L
 AIR      mean Daily Air temperature       1:144     1:73      1:17      1:365
             degK on grid GMG1 with 805.32 for missing data
             X=1.2W(-1.2):1.2W  Y=91.2S:91.2N  Z=5:1038 
 
  time range: 01-JAN-2003 00:00 to 31-DEC-2003 00:00
 
    2> ./air.2004.nc
     mean daily NMC reanalysis (2004)
 name     title                             I         J         K         L
 AIR      mean Daily Air temperature       1:144     1:73      1:17      1:198
             degK on grid GMV1 with 805.32 for missing data
             X=1.2W(-1.2):1.2W  Y=91.2S:91.2N  Z=5:1038 
 
  time range: 01-JAN-2004 00:00 to 16-JUL-2004 00:00
 
    3> ./air_mc.des  (default)
     mean daily NMC reanalysis (2003)
 name     title                             I         J         K         L
 AIR      mean Daily Air temperature       1:144     1:73      1:17      1:563
             degK on grid GOO1 with 805.32 for missing data
             X=1.2W(-1.2):1.2W  Y=91.2S:91.2N  Z=5:1038 
 
  time range: 03-JAN-2003 00:00 to 18-JUL-2004 00:00
 
          time-dependent data files:
03-JAN-2003 00:00 -> 02-JAN-2004 00:00    /home/cch/vdcdata/MC/air.2003.nc
03-JAN-2004 00:00 -> 18-JUL-2004 00:00    /home/cch/vdcdata/MC/air.2004.nc
-----
 
As you can see, the time range of descriptor file air_mc.des is from 03-JAN-2003 00:00 to 18-JUL-2004 00:00 , rather than from 01-JAN-2003 00:00 to 16-JUL-2004 00:00.
Why does it shift two days?
 
The result of ncdump -h and the descriptor file are attached.
Thanks for any suggestion!
 
 

Attachment: air.2004.ncdump
Description: Binary data

Attachment: air_mc.des
Description: Binary data

Attachment: air.2003.ncdump
Description: Binary data


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