UKMO grib files
Philippe Le Gall
looping at LOOPING.ORG
Fri Dec 15 18:07:30 EST 2006
ok thanks, i found that i was using some files matching to the wrong
area. So what i was trying to display was undefined.
No it's working. Just another small question : is there a way to open
multiple files from differents levels (winds & temp) in order to query
on a 3D space. I mean is it possible to open 300, 400, 500, 700mb files,
and then obtain a display on level 450mb?
Regards
Philippe
Mac MacLeod a écrit :
> Hi Phillippe.
>
> From your q cltinfo, you appear to not have mapped the vgrd300mb
> variable. Also if you say var.1 and var.2, you have to have two
> control files open with the first set of files providing var.1 while
> the second control file provides var.2.
>
> These are my starting quesses on the problem.
>
> If you have two control files open and the u component is still a
> problem then, use wgrib to map the grib files "HUIG30EGRR131200" and
> see if the u-component is defined. They may have output it as wind
> speed in place of the u and v components of the wind. If the
> u-componebt is present then look at the max and min values to see if
> they look reasonable.
>
> I hope this helps.
>
> Sincerely
>
> Mac MacLeod
>
> M.A.(Mac) MacLeod
> President and General Manager,
> Scotia Weather Services Inc.
> 192 Wyse Road, Suite 8,
> Dartmouth, Nova Scotia, B3A 1M9
> Tele: 902-468-3866
> Cell: 902-225-5747
> Fax: 902-461-1768
> E-mail: mmacleod at scotiaweather.com <mailto:mmacleod at scotiaweather.com>
> visit us at: www.scotiaweather.com <http://www.scotiaweather.com>
>
>
> ----- Original Message -----
> *From:* Philippe Le Gall <mailto:looping at LOOPING.ORG>
> *To:* GRADSUSR at LIST.CINECA.IT <mailto:GRADSUSR at LIST.CINECA.IT>
> *Sent:* Friday, December 15, 2006 15:23 PM
> *Subject:* UKMO grib files
>
> Hi. I currently receiving ukmo grib files for upper air temp and
> winds. No problem to use the temp files with grads, but when i'm
> trying to display winds, it does not work : U field seems to be
> undefined. Does someone has an idea about this?
>
> Regards
>
> ga> open HUIG30EGRR131200.ctl
> Scanning description file: HUIG30EGRR131200.ctl
> Data file HUIG30EGRR131200 is open as file 1
> LON set to -30 60
> LAT set to 0 90
> LEV set to 1 1
> Time values set: 2006:7:13:12 2006:7:13:12
> Notice: Implied interpolation for file HUIG30EGRR131200.ctl
> Interpolation will be performed on any data displayed from this file
> ga> open HVIG30EGRR131200.ctl
> Scanning description file: HVIG30EGRR131200.ctl
> Data file HVIG30EGRR131200 is open as file 2
> Notice: Implied interpolation for file HVIG30EGRR131200.ctl
> Interpolation will be performed on any data displayed from this file
> ga> q ctlinfo
> dset HUIG30EGRR131200
> title HUIG30EGRR131200
> undef 9.999e+20
> xdef 73 linear -30 1.25
> ydef 73 linear 0 1.25
> zdef 1 linear 1 1
> tdef 1 linear 12Z13JUL2006 1mo
> vars 1
> ugrd300mb 0 33,100,300 ** 300 mb u wind [m/s]
> ga> d ugrd300mb.1;vgrd300mb.2
> Notice: Automatic Grid Interpolation Taking Place
> Cannot draw vectors/barbs -- U field all undefined
> ga>
>
> --
> ------------------------------------------------------------------------
> *Philippe Le Gall*
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--
------------------------------------------------------------------------
*Philippe Le Gall*
jabber /skype/wengo
*Mob#* +33(0)6.80.05.42.59
*Tel#* +33(0)2.99.05.96.74
*Fax#* +44(0)870.132.0021
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