[Met_help] [rt.rap.ucar.edu #39531] History for Use of new gridded observation product (UNCLASSIFIED)

[RAL HelpDesk {for Tressa Fowler}]

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  Initial Request
----------------------------------------------------------------

Classification: UNCLASSIFIED
Caveats: NONE

John or Tressa - 

I downloaded from a NOAA site a new Real Time Mesoscale Analysis (RTMA)
gridded observation product in Grib2 format which is for CONUS and the
spatial resolution is 2.5 km which I would like to use in Grid-Stat to
evaluate a WRF forecast of spatial resolution 3km.

I used John's link which provided the cnvgrib tool and downloaded the tool.
We are currently testing it to convert the GRIB2 file
(gsi.2dvaranl.yyyymmddhh.Grb2.ndfd) to GRIB1.

Can you confirm the next step prior to use in MET is to use CopyGB to regrid
the 2.5 res gridded observation file to 3km? Will CopyGB also provide a way
for us to crop out the data we don't need outside of the domain of the WRF
forecast or should this be done using the Grid-Stat config file controls?

Thanks.
R/
John

Mr John W. Raby, Meteorologist
U.S. Army Research Laboratory
White Sands Missile Range, NM 88002
(575) 678-2004 DSN 258-2004
FAX (575) 678-1230 DSN 258-1230
Email: john.raby at us.army.mil

Please begin using the email address within this signature 
block for all future correspondence.  The current @arl.army.mil 
address will be decommissioned in upcoming months.

"When you can measure what you are speaking about and express it in numbers,
you know something about it, but when you cannot measure it, when you cannot
express it in number, your knowledge is of a meagre and unsatisfactory
kind". - Lord Kelvin


Classification: UNCLASSIFIED
Caveats: NONE




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  Complete Ticket History
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Subject: Use of new gridded observation product (UNCLASSIFIED)
From: Tressa Fowler
Time: Fri Jul 23 13:15:17 2010

Hi John,

Yes, you can use copygb to regrid your data from 2.5 to 3km. I have
used copygb in the past to select out smaller areas, but I have not
done this at the same time as the regridding. I don't know if it can
do them simultaneously. If not, you might be better off using our
masking regions.

Let me know if you have other questions.

Regards,

Tressa

On Fri Jul 23 09:44:38 2010, john.raby at us.army.mil wrote:
> Classification: UNCLASSIFIED
> Caveats: NONE
>
> John or Tressa -
>
> I downloaded from a NOAA site a new Real Time Mesoscale Analysis
(RTMA)
> gridded observation product in Grib2 format which is for CONUS and
the
> spatial resolution is 2.5 km which I would like to use in Grid-Stat
to
> evaluate a WRF forecast of spatial resolution 3km.
>
> I used John's link which provided the cnvgrib tool and downloaded
the tool.
> We are currently testing it to convert the GRIB2 file
> (gsi.2dvaranl.yyyymmddhh.Grb2.ndfd) to GRIB1.
>
> Can you confirm the next step prior to use in MET is to use CopyGB
to regrid
> the 2.5 res gridded observation file to 3km? Will CopyGB also
provide a way
> for us to crop out the data we don't need outside of the domain of
the WRF
> forecast or should this be done using the Grid-Stat config file
controls?
>
> Thanks.
> R/
> John
>
> Mr John W. Raby, Meteorologist
> U.S. Army Research Laboratory
> White Sands Missile Range, NM 88002
> (575) 678-2004 DSN 258-2004
> FAX (575) 678-1230 DSN 258-1230
> Email: john.raby at us.army.mil
>
> Please begin using the email address within this signature
> block for all future correspondence.  The current @arl.army.mil
> address will be decommissioned in upcoming months.
>
> "When you can measure what you are speaking about and express it in
numbers,
> you know something about it, but when you cannot measure it, when
you cannot
> express it in number, your knowledge is of a meagre and
unsatisfactory
> kind". - Lord Kelvin
>
>
> Classification: UNCLASSIFIED
> Caveats: NONE
>
>



------------------------------------------------
Subject: Use of new gridded observation product (UNCLASSIFIED)
From: Raby, John
Time: Fri Jul 23 13:18:55 2010

Classification: UNCLASSIFIED
Caveats: NONE

Tressa -

Thanks. Oh, by the way, when do I convert that GRIB1 file to netcdf
and what
utility does that?
R/
John


-----Original Message-----
From: RAL HelpDesk {for Tressa Fowler} [mailto:met_help at ucar.edu]
Sent: Friday, July 23, 2010 1:15 PM
To: Raby, John (Civ, ARL/CISD)
Cc: Brown, Bob (Civ, ARL/CISD)
Subject: [rt.rap.ucar.edu #39531] Use of new gridded observation
product
(UNCLASSIFIED)

Hi John,

Yes, you can use copygb to regrid your data from 2.5 to 3km. I have
used
copygb in the past to select out smaller areas, but I have not done
this at
the same time as the regridding. I don't know if it can do them
simultaneously. If not, you might be better off using our masking
regions.

Let me know if you have other questions.

Regards,

Tressa

On Fri Jul 23 09:44:38 2010, john.raby at us.army.mil wrote:
> Classification: UNCLASSIFIED
> Caveats: NONE
>
> John or Tressa -
>
> I downloaded from a NOAA site a new Real Time Mesoscale Analysis
> (RTMA) gridded observation product in Grib2 format which is for
CONUS
> and the spatial resolution is 2.5 km which I would like to use in
> Grid-Stat to evaluate a WRF forecast of spatial resolution 3km.
>
> I used John's link which provided the cnvgrib tool and downloaded
the tool.
> We are currently testing it to convert the GRIB2 file
> (gsi.2dvaranl.yyyymmddhh.Grb2.ndfd) to GRIB1.
>
> Can you confirm the next step prior to use in MET is to use CopyGB
to
> regrid the 2.5 res gridded observation file to 3km? Will CopyGB also
> provide a way for us to crop out the data we don't need outside of
the
> domain of the WRF forecast or should this be done using the Grid-
Stat config
> file controls?
>
> Thanks.
> R/
> John
>
> Mr John W. Raby, Meteorologist
> U.S. Army Research Laboratory
> White Sands Missile Range, NM 88002
> (575) 678-2004 DSN 258-2004
> FAX (575) 678-1230 DSN 258-1230
> Email: john.raby at us.army.mil
>
> Please begin using the email address within this signature block for
> all future correspondence.  The current @arl.army.mil address will
be
> decommissioned in upcoming months.
>
> "When you can measure what you are speaking about and express it in
> numbers, you know something about it, but when you cannot measure
it,
> when you cannot express it in number, your knowledge is of a meagre
> and unsatisfactory kind". - Lord Kelvin
>
>
> Classification: UNCLASSIFIED
> Caveats: NONE
>
>



Classification: UNCLASSIFIED
Caveats: NONE



------------------------------------------------
Subject: Use of new gridded observation product (UNCLASSIFIED)
From: Tressa Fowler
Time: Fri Jul 23 13:37:16 2010

John,

You don't have to convert to netCDF. The observation files can also be
in grib 1 format.

Tressa

On Fri Jul 23 13:18:55 2010, john.raby at us.army.mil wrote:
> Classification: UNCLASSIFIED
> Caveats: NONE
>
> Tressa -
>
> Thanks. Oh, by the way, when do I convert that GRIB1 file to netcdf
> and what
> utility does that?
> R/
> John
>
>
> -----Original Message-----
> From: RAL HelpDesk {for Tressa Fowler} [mailto:met_help at ucar.edu]
> Sent: Friday, July 23, 2010 1:15 PM
> To: Raby, John (Civ, ARL/CISD)
> Cc: Brown, Bob (Civ, ARL/CISD)
> Subject: [rt.rap.ucar.edu #39531] Use of new gridded observation
> product
> (UNCLASSIFIED)
>
> Hi John,
>
> Yes, you can use copygb to regrid your data from 2.5 to 3km. I have
> used
> copygb in the past to select out smaller areas, but I have not done
> this at
> the same time as the regridding. I don't know if it can do them
> simultaneously. If not, you might be better off using our masking
> regions.
>
> Let me know if you have other questions.
>
> Regards,
>
> Tressa
>
> On Fri Jul 23 09:44:38 2010, john.raby at us.army.mil wrote:
> > Classification: UNCLASSIFIED
> > Caveats: NONE
> >
> > John or Tressa -
> >
> > I downloaded from a NOAA site a new Real Time Mesoscale Analysis
> > (RTMA) gridded observation product in Grib2 format which is for
> CONUS
> > and the spatial resolution is 2.5 km which I would like to use in
> > Grid-Stat to evaluate a WRF forecast of spatial resolution 3km.
> >
> > I used John's link which provided the cnvgrib tool and downloaded
> the tool.
> > We are currently testing it to convert the GRIB2 file
> > (gsi.2dvaranl.yyyymmddhh.Grb2.ndfd) to GRIB1.
> >
> > Can you confirm the next step prior to use in MET is to use CopyGB
> to
> > regrid the 2.5 res gridded observation file to 3km? Will CopyGB
also
> > provide a way for us to crop out the data we don't need outside of
> the
> > domain of the WRF forecast or should this be done using the Grid-
> Stat config
> > file controls?
> >
> > Thanks.
> > R/
> > John
> >
> > Mr John W. Raby, Meteorologist
> > U.S. Army Research Laboratory
> > White Sands Missile Range, NM 88002
> > (575) 678-2004 DSN 258-2004
> > FAX (575) 678-1230 DSN 258-1230
> > Email: john.raby at us.army.mil
> >
> > Please begin using the email address within this signature block
for
> > all future correspondence.  The current @arl.army.mil address will
> be
> > decommissioned in upcoming months.
> >
> > "When you can measure what you are speaking about and express it
in
> > numbers, you know something about it, but when you cannot measure
> it,
> > when you cannot express it in number, your knowledge is of a
meagre
> > and unsatisfactory kind". - Lord Kelvin
> >
> >
> > Classification: UNCLASSIFIED
> > Caveats: NONE
> >
> >
>
>
>
> Classification: UNCLASSIFIED
> Caveats: NONE
>
>



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