searching for .ctl file of ecmwf-yotc high resolution grib files

[S.De]

Dear GrADS usre's gorup,
                        I have downloaded 6-hourly high resolution forecast and analyzed
data of horizontal wind field from the yotc data server
(http://data-portal.ecmwf.int/data/d/yotc/class=od/levtype=pl/type=fc/ and
http://data-portal.ecmwf.int/data/d/yotc/class=od/levtype=pl/type=an/). All the data are
in grib format.I am not getting the .ctl file of these grib files. What is the default
resolution of the grib files? How can I convert the grib files into the binary and ASCII
files? I will be very obliged if someone provide the corresponding .ctl file and answer
the above queries.I have tried with the command grib2ctl.pl, but the code is showing
error at the line no. 437 with the message "Use of uninitialized value in string eq at
/usr/local/grads/bin/grib2ctl.pl line 437.
*** script needs to be modified ***
unknown user-defined grid"

 Thanking you and with regards,
Saumyendu 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
         saumyendu.de at gmail.com
Phone: +91 20 25893600/Extn.275 (O)
Fax:   +91 20 25893825
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