create a ctl for a subset of NARR data

[Emily]

Hi group member,

Could you please help me to solve the problem?
> My grads version: Grads2.0a3 under Window XP 2002
>
>I download a subset data of NARR A (every 3 hours time step per day) from:
http://nomads.ncdc.noaa.gov/cgi-bin/ncdc-ui/define-collection.pl?model_sys=narr&model_name=narr-a&grid_name=221
In order to simplification, I just download one variable (hgtpre), and one level (500hpa), when I use g2ctl.pl to create .ctl file, it shows that:
either ls.grb is missing or not a grib file or wgrib2 is not on your path or wgrib2 is too old.

Please tell me how to deal with this problem, thanks a lot.

BTW, I attached my grib data as well, please try it for me.

Best regards,

Emily,

York University, Toronto, Canada

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