To prepare a ctl file

[S.De]

To
The GrADS Users,
                               I have a set of forecast data files in binary forms of
100 days. Each day has 5-day (120 hrs.) forecasts in 6 hourly interval based at 00Z,
06Z, 12Z, 18Z. The data files are for example, 00z06h010106, 00z12h010106,
00z18h010106, 00z24h010106, 00z30h010106,..................,00z120h010106, 06z06h010106,



..
.,18z120h010106, 00z06h020106,

..and so on. The problem is how to write a single
data descriptor file in template options that will read all the data files. In a normal
calendar, after 18hr. control will automatically go to the next day. But in the case of
forecast hour how I can give option that after 120 hrs. of forecast control should go
to the next day.
Thanks in advance,
S. De


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Saumyendu De
Theoretical Studies Division
Indian Institute of tropical meteorology
Dr. Homi Bhabha Road; NCL-Post,
Pashan, Pune-411 008; India
e-mail:  sde at tropmet.res.in
Phone: +91 20 25893600/Extn.275 (O)
Fax:   +91 20 25893825
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