Display GRIB data

[Becker, Bernd]

Dong,

The problem is the following:

the grib file contains 6 hourly forecast data for each day, 00, 06, 12
and 18 hours.
Every day the base date changes.
So to match all the data with one ctl file I would suggest to:

drop "-0" from the call to gribmap , see what that does.

Best regards,
Bernd.

On Wed, 2005-06-29 at 03:59, dongdong wrote:
> Hi, Everybody
>
>
>
> I am trying to display GRIB data with GrADS. Please anyone who
> familiar with this help me.
>
>
>
> Firstly, I use wgrib to see the data. the wgrib result is in the
> attchment.
>
>
>
> Secondly, I use grib2ctl.pl to form the control file.
>
> It is:
>
> dset f:\grib2ctl\1998_2T.grib
> index f:\grib2ctl\1998_2T.grib.idx
> undef 9.999E+20
> title f:\grib2ctl\1998_2T.grib
> *  produced by grib2ctl v0.9.12.5p32d
> dtype grib 255
> options yrev
> ydef 73 linear -90.000000 2.5
> xdef 144 linear 0.000000 2.500000
> tdef 48 linear 00Z01jan1998 6hr
> zdef 1 linear 1 1
> vars 1
> no2Tsfc  0 167,1,0 ** surface 2 metre temperature K
> ENDVARS
>
>
>
> Then, I use gribmap to match them. It goes wrong.
>
> gribmap -0 -i －v f:\grib2ctl\1998grib.ctl
>
>
>
>  gribmap:  Scanning binary GRIB file(s):
> gribmap:  Opening GRIB file f:\grib2ctl\1998_2T.grib
> !!!!! MATCH:    1      21132  255  1  0  167   1 0            103
> 0  1
> btim: 1998010100:00 tau:   -999 dtim: 1998010100:00
> !!!!! MATCH:    2      42264  255  1  0  167   1 0          21235
> 0  1
> btim: 1998010106:00 tau:   -999 dtim: 1998010106:00
> !!!!! MATCH:    3      63396  255  1  0  167   1 0     ;      42367
> 0  1
> btim: 1998010112:00 tau:   -999 dtim: 1998010112:00
> !!!!! MATCH:    4      84528  255  1  0  167   1 0          63499
> 0  1
> btim: 1998010118:00 tau:   -999 dtim: 1998010118:00
> ----- Time out of bounds:    5     105660  255  1  0  167   1 0
> 84631
>        0  16 btim: 1998020100:00 tau:   -999 dtim: 1998020100:00
> ----- Time out of bounds:    6     126792  255  1  0  167   1 0
> 105763
>        0  16 btim: 1998020106:00 tau:   -999 dtim: 1998020106:00
> ----- Time out of bounds:    7     147924  255  1  0  167   1 0 &nb
> sp;       126895
>        0  16 btim: 1998020112:00 tau:   -999 dtim: 1998020112:00
> ----- Time out of bounds:    8     169056  255  1  0  167   1 0
> 148027
>        0  16 btim: 1998020118:00 tau:   -999 dtim: 1998020118:00
> ----- Time out of bounds:    9     190188  255  1  0  167   1 0
> 169159
>        0  16 btim: 1998030100:00 tau:   -999 dtim: 1998030100:00
> ----- Time out of bounds:   10     211320  255  1  0  167   1 0
> 190291
>        0  16 btim: 1998030106:00 tau:   -999 dtim: 1998030106:00
> -- More  --
>
>
>
> Only few of the data matched. what's the matter? I have been puzzled
> by this for a long time.
>
> Hoping for suggestions.Thanks a lot!
>
>
>
> Sincerely Dongdong,Chen
>
>
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--
Bernd Becker   The Monthly Outlook
Met Office  FitzRoy Road  Exeter   Devon EX1 3PB  United Kingdom
Tel.: +44 (0) 1392 884511 Fax: +44 (0)870 900 5050
E-mail:bernd.becker at metoffice.gov.uk -  http://www.metoffice.gov.uk