[gradsusr] gradsusr Digest, Vol 30, Issue 50

Zilore Mumba zmumba at gmail.com
Wed Aug 29 05:43:59 EDT 2012


Excuse me if am posting to the wrong list, but I am assuming many of the
people on this list run the WRF model. I have been having problems lately
with data to run WRF
The model was running very well with data from
http://nomad3.ncep.noaa.gov/pub/gfs/rotating-grb2/ (alternative being
http://nomad3.ncep.noaa.gov/pub/gfs/rotating-0.5/). However, since 7th
August
the data on these addresses were updated  no more.
Then I tried http://nomad5.ncep.noaa.gov/pub/gfs/gfs20120820/ where
the date changes daily, but from 20th there is no more update.
Claudio kindly gave me
ftp://ftpprd.ncep.noaa.gov/pub/data/nccf/com/gfs/prod/gfs.2012082800/ but
as of 29th there is no more update. I wonder what is happening. would
someone have some idea?
Thanks

On Fri, Aug 24, 2012 at 5:00 PM,  <gradsusr-request at gradsusr.org> wrote:
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> Today's Topics:
>
>    1. Make monthly subset from forecast output using lats4d (Midhun M)
>    2. Re: Unusual map displacement (Dan Leins)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 24 Aug 2012 08:36:03 +0530
> From: Midhun M <midhun.ndr at gmail.com>
> Subject: [gradsusr] Make monthly subset from forecast output using
>         lats4d
> To: gradsusr at gradsusr.org
> Message-ID:
>         <CAJtc32DXJh_JzHvvTf6WWb96gsaQCsHVJK=
j770QDW477ds3Ug at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Dear users,
> I want to re-grid 6-hourly forecast outputs from a global model to a
single
> monthly mean netcdf file. Here I am attaching the grads control file (ctl)
> of forecast outputs.
> If anybody knows this, please help me..
>
>
> -midhun
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> ------------------------------
>
> Message: 2
> Date: Fri, 24 Aug 2012 07:27:04 -0700
> From: Dan Leins <theedge981 at gmail.com>
> Subject: Re: [gradsusr] Unusual map displacement
> To: GrADS Users Forum <gradsusr at gradsusr.org>
> Message-ID:
>         <
CA+Z5f8Gd5OLAuTXsE501x9H+5JONYcCc+pTgQA5BveKtrEq2qQ at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> List,
>
> Just wanted to see if anyone can point me in the right direction with this
> problem. I've read through the documentation but it's still unclear to me
> how to proceed with lcc grids that cross the equator. I've verified the
> data in the grib file indeed stretches well below the equator and that
this
> is an issue isolated to GrADS.
>
> Thanks for any help!
> Dan
>
> On Thu, Aug 16, 2012 at 3:06 AM, Dan Leins <theedge981 at gmail.com> wrote:
>
>> Jennifer,
>>
>> Yes, the data is on a lambert projection that crosses the equator. If
pdef
>> lcc isn't the appropriate option, what else can I try? I've looked
through
>> the pdef documentation but I don't see anything that stands out as the
>> obvious solution.
>>
>> For reference, here is how my pdef line is currently defined in my
control
>> file:
>>
>> *pdef 269 169 rotllr -10.242000 -88.026000 1 1 25.118000 25.118000
>> -46.680000 40000 40000*
>>
>> Here's some metadata about the grib file itself:
>>
>> *      File Name                :  201207240600_arw_wrfout_d01.grb*
>> *      File Format              :  GRIB 1*
>> *      Model ID                 :  116*
>> *      Center ID                :  7*
>> *      Sub Center ID            :  0*
>> *
>> *
>> *      Grid Projection          :  Lambert Conformal*
>> *
>> *
>> *      Grid Dimensions  NX x NY :  269 x 169*
>> *      Grid Spacing      DX, DY :  40.000km, 40.000km*
>> *      Standard Latitude        :  25.118*
>> *      Standard Longitude       :  -46.680*
>> *      Latitude, Longitude (1,1):  -10.242,  -88.026*
>> *      True Lat1, Lat2          :  25.118,  25.118*
>> *      Pole                     :  North Pole*
>> *      Scan                     :  WE:SN*
>> *
>> *
>> *      Corner Lat-Lon points of the domain:*
>> *
>> *
>> *         43.14, -111.83             43.15, 18.45*
>> *        *                            **
>> *
>> *
>> *                       * 24.75, -47.09*
>> *
>> *
>> *        *                            **
>> *         -10.24, -88.03             -10.24, -5.35*
>>
>>
>> Any advice on how to proceed?
>>
>> Thanks!
>> Dan
>>
>> On Fri, Aug 10, 2012 at 4:24 PM, Jennifer Adams <jma at cola.iges.org>
wrote:
>>
>>> If the native grid is on a lambert projection that crosses the equator?
>>> If so, then the pdef lcc won't work properly. --Jennifer
>>>
>>>
>>> On Aug 10, 2012, at 6:14 PM, Dan Leins wrote:
>>>
>>> List,
>>>
>>> I have a grib1 file from a WRF model which is displaying improperly in
>>> GrADS. The domain is fairly large and crosses the equator as well as the
>>> prime meridian. Here is the output from q dims:
>>>
>>> X is varying   Lon = -88.026 to 11.0066   X = 1 to 269
>>> Y is varying   Lat = -10.242 to 50.8489   Y = 1 to 169
>>> Z is fixed     Lev = 1013  Z = 1
>>> T is fixed     Time = 06Z24JUL2012  T = 1
>>> E is fixed     Ens = 1  E = 1
>>>
>>>
>>> I'm attaching an image of the 'landsfc' field from the grib file, it's
>>> obvious that the field is displaced too far north.
>>>
>>> Any idea what could be going on here? I've tried setting different map
>>> projections in GrADS but that doesn't resolve the problem.
>>>
>>> Thanks for any help!
>>> Dan
>>> <landsfc.png>_______________________________________________
>>> gradsusr mailing list
>>> gradsusr at gradsusr.org
>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>
>>>
>>>  --
>>> Jennifer M. Adams
>>> IGES/COLA
>>> 4041 Powder Mill Road, Suite 302
>>> Calverton, MD 20705
>>> jma at cola.iges.org
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> gradsusr mailing list
>>> gradsusr at gradsusr.org
>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>
>>>
>>
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