[Met_help] [rt.rap.ucar.edu #91941] History for Duplicate obs in

[John Halley Gotway via RT]

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  Initial Request
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Hi,

I have a question about Point-Stat and duplicate observations. In my 
Point-Stat config file, I have obs_window set to +- 30 minutes and 
duplicate_flag=UNIQUE.  My question is if there are two or more 
observations with the same lat/lon/level and elevation, but different 
report times within that 60 minute window, will it use all those 
duplicate observations (with different report times) for verification or 
will it only use one duplicate observation with report time closest to 
the analysis time. If the former, is there a way I can specify that it 
only use one duplicate observation with report time closest to the 
analysis time?

Thanks,

Annette



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  Complete Ticket History
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Subject: Duplicate obs in
From: John Halley Gotway
Time: Fri Sep 06 19:41:23 2019

Annette,

Yes there is.  You’re very close.  We don’t consider multiple obs at
the
same location at different times to be true “duplicates”.  They are
just
multiple obs... and you can use the obs_summary config file option to
control the logic.

Set:
obs_summary = NEAREST;

And you can read more about those options starting on line 1469 here:

https://github.com/NCAR/MET/blob/master_v8.1/met/data/config/README

Hope that clarifies.

Thanks
John

On Fri, Sep 6, 2019 at 3:03 PM Annette Gibbs via RT
<met_help at ucar.edu>
wrote:

>
> Fri Sep 06 13:29:42 2019: Request 91941 was acted upon.
> Transaction: Ticket created by annette.gibbs at noaa.gov
>        Queue: met_help
>      Subject: Duplicate obs in
>        Owner: Nobody
>   Requestors: annette.gibbs at noaa.gov
>       Status: new
>  Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=91941 >
>
>
> Hi,
>
> I have a question about Point-Stat and duplicate observations. In my
> Point-Stat config file, I have obs_window set to +- 30 minutes and
> duplicate_flag=UNIQUE.  My question is if there are two or more
> observations with the same lat/lon/level and elevation, but
different
> report times within that 60 minute window, will it use all those
> duplicate observations (with different report times) for
verification or
> will it only use one duplicate observation with report time closest
to
> the analysis time. If the former, is there a way I can specify that
it
> only use one duplicate observation with report time closest to the
> analysis time?
>
> Thanks,
>
> Annette
>
>
>

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Subject: Re: [rt.rap.ucar.edu #91941] Duplicate obs in
From: Annette Gibbs
Time: Mon Sep 09 06:34:19 2019

John,

Thank you!  That worked perfectly.

Thanks,

Annette

On 9/6/2019 9:41 PM, John Halley Gotway via RT wrote:
> Annette,
>
> Yes there is.  You’re very close.  We don’t consider multiple obs at
the
> same location at different times to be true “duplicates”.  They are
just
> multiple obs... and you can use the obs_summary config file option
to
> control the logic.
>
> Set:
> obs_summary = NEAREST;
>
> And you can read more about those options starting on line 1469
here:
>
> https://github.com/NCAR/MET/blob/master_v8.1/met/data/config/README
>
> Hope that clarifies.
>
> Thanks
> John
>
> On Fri, Sep 6, 2019 at 3:03 PM Annette Gibbs via RT
<met_help at ucar.edu>
> wrote:
>
>> Fri Sep 06 13:29:42 2019: Request 91941 was acted upon.
>> Transaction: Ticket created by annette.gibbs at noaa.gov
>>         Queue: met_help
>>       Subject: Duplicate obs in
>>         Owner: Nobody
>>    Requestors: annette.gibbs at noaa.gov
>>        Status: new
>>   Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=91941 >
>>
>>
>> Hi,
>>
>> I have a question about Point-Stat and duplicate observations. In
my
>> Point-Stat config file, I have obs_window set to +- 30 minutes and
>> duplicate_flag=UNIQUE.  My question is if there are two or more
>> observations with the same lat/lon/level and elevation, but
different
>> report times within that 60 minute window, will it use all those
>> duplicate observations (with different report times) for
verification or
>> will it only use one duplicate observation with report time closest
to
>> the analysis time. If the former, is there a way I can specify that
it
>> only use one duplicate observation with report time closest to the
>> analysis time?
>>
>> Thanks,
>>
>> Annette
>>
>>
>>

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