[Met_help] [rt.rap.ucar.edu #61271] History for verify precipitation using NCEP ST4 data

[John Halley Gotway via RT]

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  Initial Request
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Dear METhelp,

I want to verify the precipitation forecasts using NCEP Stage IV 
(http://data.eol.ucar.edu/codiac/dss/id=21.093)
I have a question about how to combine NCEP Stage IV data using 
pcp_combine command.

Attachments are two sample data. They are six hour accumulated 
precipitation.
Could you please tell me how to get 12hr accumulated precipitation ?

Thank you  in advance.

Junmei




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  Complete Ticket History
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Subject: Re: [rt.rap.ucar.edu #61271] verify precipitation using NCEP ST4 data
From: John Halley Gotway
Time: Tue May 07 09:54:07 2013

Junmei,

The easiest way to do this is using the "add" command for pcp_combine
as follows:

   METv4.0/bin/pcp_combine -add ST4.2010060806.06h 6
ST4.2010060812.06h 6 ST4.2010060812.12h.nc

I've just listed the names of the files to be added together followed
by the accumulation interval to be used from each.  Then the last
argument is name of the output NetCDF file to be created.

If you'd like to visualize this data, you could so using the
plot_data_plane utility:
   METv4.0/bin/plot_data_plane ST4.2010060806.06h
ST4.2010060806.06h.ps 'name="APCP"; level="A06";'      -plot_range 0
125
   METv4.0/bin/plot_data_plane ST4.2010060812.06h
ST4.2010060812.06h.ps 'name="APCP"; level="A06";'      -plot_range 0
125
   METv4.0/bin/plot_data_plane ST4.2010060812.12h.nc
ST4.2010060812.12h.ps 'name="APCP_12"; level="(*,*)";' -plot_range 0
125

More information about the pcp_combine tool can be found in the online
tutorial, here:
   http://www.dtcenter.org/met/users/support/online_tutorial/METv4.0/pcp_combine/index.php

Hope that helps.

Thanks,
John Halley Gotway
met_help at ucar.edu

On 05/06/2013 04:01 PM, Junmei Ban via RT wrote:
>
> Mon May 06 16:01:44 2013: Request 61271 was acted upon.
> Transaction: Ticket created by jban at ucar.edu
>         Queue: met_help
>       Subject: verify precipitation using NCEP ST4 data
>         Owner: Nobody
>    Requestors: jban at ucar.edu
>        Status: new
>   Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=61271 >
>
>
> Dear METhelp,
>
> I want to verify the precipitation forecasts using NCEP Stage IV
> (http://data.eol.ucar.edu/codiac/dss/id=21.093)
> I have a question about how to combine NCEP Stage IV data using
> pcp_combine command.
>
> Attachments are two sample data. They are six hour accumulated
> precipitation.
> Could you please tell me how to get 12hr accumulated precipitation ?
>
> Thank you  in advance.
>
> Junmei
>
>
>

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Subject: Re: [rt.rap.ucar.edu #61271] verify precipitation using NCEP ST4 data
From: Junmei Ban
Time: Tue May 07 10:29:54 2013

John,

The command works and it is very convenient that I can get the plot.
Many thanks for your help.

Junmei

On Tue, 7 May 2013 09:54:08 -0600
  "John Halley Gotway via RT" <met_help at ucar.edu> wrote:
> Junmei,
>
> The easiest way to do this is using the "add" command for
>pcp_combine as follows:
>
>   METv4.0/bin/pcp_combine -add ST4.2010060806.06h 6
>ST4.2010060812.06h 6 ST4.2010060812.12h.nc
>
> I've just listed the names of the files to be added together
>followed by the accumulation interval to be used from each.  Then the
>last argument is name of the output NetCDF file to be created.
>
> If you'd like to visualize this data, you could so using the
>plot_data_plane utility:
>   METv4.0/bin/plot_data_plane ST4.2010060806.06h
>   ST4.2010060806.06h.ps 'name="APCP"; level="A06";'      -plot_range
>0 125
>   METv4.0/bin/plot_data_plane ST4.2010060812.06h
>   ST4.2010060812.06h.ps 'name="APCP"; level="A06";'      -plot_range
>0 125
>   METv4.0/bin/plot_data_plane ST4.2010060812.12h.nc
>ST4.2010060812.12h.ps 'name="APCP_12"; level="(*,*)";' -plot_range 0
>125
>
> More information about the pcp_combine tool can be found in the
>online tutorial, here:
>
http://www.dtcenter.org/met/users/support/online_tutorial/METv4.0/pcp_combine/index.php
>
> Hope that helps.
>
> Thanks,
> John Halley Gotway
> met_help at ucar.edu
>
> On 05/06/2013 04:01 PM, Junmei Ban via RT wrote:
>>
>> Mon May 06 16:01:44 2013: Request 61271 was acted upon.
>> Transaction: Ticket created by jban at ucar.edu
>>         Queue: met_help
>>       Subject: verify precipitation using NCEP ST4 data
>>         Owner: Nobody
>>    Requestors: jban at ucar.edu
>>        Status: new
>>   Ticket <URL:
>>https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=61271 >
>>
>>
>> Dear METhelp,
>>
>> I want to verify the precipitation forecasts using NCEP Stage IV
>> (http://data.eol.ucar.edu/codiac/dss/id=21.093)
>> I have a question about how to combine NCEP Stage IV data using
>> pcp_combine command.
>>
>> Attachments are two sample data. They are six hour accumulated
>> precipitation.
>> Could you please tell me how to get 12hr accumulated precipitation
?
>>
>> Thank you  in advance.
>>
>> Junmei
>>
>>
>>
>

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