[Met_help] [rt.rap.ucar.edu #92779] History for Help with accumulated precip verification
John Halley Gotway via RT
met_help at ucar.edu
Wed Nov 6 16:55:15 MST 2019
----------------------------------------------------------------
Initial Request
----------------------------------------------------------------
Hey John,
It's been a while since we last spoke. I am in the process of verifying
precipitation using point_stat. The original functionality NRL has to
verify precipitation is the ability to set a dump bucket hour and
accumulation window. FNMOC typically dumps accumulation every 96 hours but
the default COAMPS research mode dumps every 72. It would be nice if I
could set the dump bucket and accumulation window within the config file.
Does point_stat have any of these features?
Justin Tsu
Marine Meteorology Division
Data Assimilation/Mesoscale Modeling
Building 704 Room 212
Naval Research Laboratory, Code 7531
7 Grace Hopper Avenue
Monterey, CA 93943-5502
Ph. (831) 656-4111
----------------------------------------------------------------
Complete Ticket History
----------------------------------------------------------------
Subject: Help with accumulated precip verification
From: John Halley Gotway
Time: Thu Oct 24 14:04:27 2019
Justin,
This is interesting, we were talking about the bucketing of
precipitation
data just this morning during the METplus development meeting. The
pcp_combine tool in MET is used to modify the precipitation
accumulation
intervals of the model output to make them comparable with the
accumulation
interval of the observations.
We were just discussing that the METplus pcp_combine wrapper does not
currently include logic to account for different bucketing intervals.
But
we need to add this logic to enable folks at NOAA/GSD to use METplus.
Here's the GitHub issue we added this morning:
https://github.com/NCAR/METplus/issues/305
George McCabe is a METplus developer who'll be looking at addressing
that
in METplus.
So to answer your question succinctly, no, there's no logic for
rebucketing
precip in point_stat. Instead, it's done as a preprocessing step
using the
pcp_combine tool. That is not currently supported by the METplus
wrappers,
but will be in the future. For now, you'd just need to call
pcp_combine
directly with your own shell scripts.
Thanks,
John
On Wed, Oct 23, 2019 at 6:11 PM Tsu, Mr. Justin via RT
<met_help at ucar.edu>
wrote:
>
> Wed Oct 23 18:11:57 2019: Request 92779 was acted upon.
> Transaction: Ticket created by justin.tsu at nrlmry.navy.mil
> Queue: met_help
> Subject: Help with accumulated precip verification
> Owner: Nobody
> Requestors: justin.tsu at nrlmry.navy.mil
> Status: new
> Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=92779 >
>
>
> Hey John,
>
>
>
> It's been a while since we last spoke. I am in the process of
verifying
> precipitation using point_stat. The original functionality NRL has
to
> verify precipitation is the ability to set a dump bucket hour and
> accumulation window. FNMOC typically dumps accumulation every 96
hours
> but
> the default COAMPS research mode dumps every 72. It would be nice
if I
> could set the dump bucket and accumulation window within the config
file.
> Does point_stat have any of these features?
>
>
>
> Justin Tsu
>
> Marine Meteorology Division
>
> Data Assimilation/Mesoscale Modeling
>
> Building 704 Room 212
>
> Naval Research Laboratory, Code 7531
>
> 7 Grace Hopper Avenue
>
> Monterey, CA 93943-5502
>
>
>
> Ph. (831) 656-4111
>
>
>
>
>
------------------------------------------------
Subject: Help with accumulated precip verification
From: Tsu, Mr. Justin
Time: Mon Oct 28 17:54:20 2019
Hey John,
Thanks for the response. Quick side question: A while ago you told
me that
point_stat has a feature where it calculated WIND from UGRD and VGRD
components. If I have two fields for a particular DTG and elevation
named
uuwind_pre_000400_000000_1a0127x0127_2019072100_00000000_fcstfld and
vvwind_pre_000400_000000_1a0127x0127_2019072100_00000000_fcstfld, how
do I
specify my fcst dictionary to specify that I want to calculate WIND
speeds
through python embedding using these two components? Can a similar
procedure
be used for wind direction?
Thanks,
Justin
-----Original Message-----
From: John Halley Gotway via RT [mailto:met_help at ucar.edu]
Sent: Thursday, October 24, 2019 1:04 PM
To: Tsu, Mr. Justin
Subject: Re: [rt.rap.ucar.edu #92779] Help with accumulated precip
verification
Justin,
This is interesting, we were talking about the bucketing of
precipitation
data just this morning during the METplus development meeting. The
pcp_combine tool in MET is used to modify the precipitation
accumulation
intervals of the model output to make them comparable with the
accumulation
interval of the observations.
We were just discussing that the METplus pcp_combine wrapper does not
currently include logic to account for different bucketing intervals.
But
we need to add this logic to enable folks at NOAA/GSD to use METplus.
Here's the GitHub issue we added this morning:
https://github.com/NCAR/METplus/issues/305
George McCabe is a METplus developer who'll be looking at addressing
that
in METplus.
So to answer your question succinctly, no, there's no logic for
rebucketing
precip in point_stat. Instead, it's done as a preprocessing step
using the
pcp_combine tool. That is not currently supported by the METplus
wrappers,
but will be in the future. For now, you'd just need to call
pcp_combine
directly with your own shell scripts.
Thanks,
John
On Wed, Oct 23, 2019 at 6:11 PM Tsu, Mr. Justin via RT
<met_help at ucar.edu>
wrote:
>
> Wed Oct 23 18:11:57 2019: Request 92779 was acted upon.
> Transaction: Ticket created by justin.tsu at nrlmry.navy.mil
> Queue: met_help
> Subject: Help with accumulated precip verification
> Owner: Nobody
> Requestors: justin.tsu at nrlmry.navy.mil
> Status: new
> Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=92779 >
>
>
> Hey John,
>
>
>
> It's been a while since we last spoke. I am in the process of
verifying
> precipitation using point_stat. The original functionality NRL has
to
> verify precipitation is the ability to set a dump bucket hour and
> accumulation window. FNMOC typically dumps accumulation every 96
hours
> but
> the default COAMPS research mode dumps every 72. It would be nice
if I
> could set the dump bucket and accumulation window within the config
file.
> Does point_stat have any of these features?
>
>
>
> Justin Tsu
>
> Marine Meteorology Division
>
> Data Assimilation/Mesoscale Modeling
>
> Building 704 Room 212
>
> Naval Research Laboratory, Code 7531
>
> 7 Grace Hopper Avenue
>
> Monterey, CA 93943-5502
>
>
>
> Ph. (831) 656-4111
>
>
>
>
>
------------------------------------------------
Subject: Help with accumulated precip verification
From: John Halley Gotway
Time: Tue Oct 29 09:55:41 2019
Justin,
Unfortunately, that wind derivation logic is limited to the GRIB1 and
GRIB2
file formats. If you request "WIND" (wind speed), MET searches
GRIB1/2
files for that record. If it can't find them, it'll find the
corresponding
"UGRD" and "VGRD" records and derive wind speed on the fly for you.
There's no way to explicitly "request" that MET do that derivation for
you
from other variables.
Fortunately, you're already using python embedding and deriving wind
speed
and directions is very easy. You could just enhance the python
embedding
script to derive them.
Thanks,
John
On Mon, Oct 28, 2019 at 5:54 PM Tsu, Mr. Justin via RT
<met_help at ucar.edu>
wrote:
>
> <URL: https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=92779 >
>
> Hey John,
>
> Thanks for the response. Quick side question: A while ago you told
me
> that
> point_stat has a feature where it calculated WIND from UGRD and VGRD
> components. If I have two fields for a particular DTG and elevation
named
> uuwind_pre_000400_000000_1a0127x0127_2019072100_00000000_fcstfld and
> vvwind_pre_000400_000000_1a0127x0127_2019072100_00000000_fcstfld,
how do I
> specify my fcst dictionary to specify that I want to calculate WIND
speeds
> through python embedding using these two components? Can a similar
> procedure
> be used for wind direction?
>
> Thanks,
> Justin
> -----Original Message-----
> From: John Halley Gotway via RT [mailto:met_help at ucar.edu]
> Sent: Thursday, October 24, 2019 1:04 PM
> To: Tsu, Mr. Justin
> Subject: Re: [rt.rap.ucar.edu #92779] Help with accumulated precip
> verification
>
> Justin,
>
> This is interesting, we were talking about the bucketing of
precipitation
> data just this morning during the METplus development meeting. The
> pcp_combine tool in MET is used to modify the precipitation
accumulation
> intervals of the model output to make them comparable with the
accumulation
> interval of the observations.
>
> We were just discussing that the METplus pcp_combine wrapper does
not
> currently include logic to account for different bucketing
intervals. But
> we need to add this logic to enable folks at NOAA/GSD to use
METplus.
> Here's the GitHub issue we added this morning:
> https://github.com/NCAR/METplus/issues/305
>
> George McCabe is a METplus developer who'll be looking at addressing
that
> in METplus.
>
> So to answer your question succinctly, no, there's no logic for
rebucketing
> precip in point_stat. Instead, it's done as a preprocessing step
using the
> pcp_combine tool. That is not currently supported by the METplus
wrappers,
> but will be in the future. For now, you'd just need to call
pcp_combine
> directly with your own shell scripts.
>
> Thanks,
> John
>
> On Wed, Oct 23, 2019 at 6:11 PM Tsu, Mr. Justin via RT
<met_help at ucar.edu>
> wrote:
>
> >
> > Wed Oct 23 18:11:57 2019: Request 92779 was acted upon.
> > Transaction: Ticket created by justin.tsu at nrlmry.navy.mil
> > Queue: met_help
> > Subject: Help with accumulated precip verification
> > Owner: Nobody
> > Requestors: justin.tsu at nrlmry.navy.mil
> > Status: new
> > Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=92779 >
> >
> >
> > Hey John,
> >
> >
> >
> > It's been a while since we last spoke. I am in the process of
verifying
> > precipitation using point_stat. The original functionality NRL
has to
> > verify precipitation is the ability to set a dump bucket hour and
> > accumulation window. FNMOC typically dumps accumulation every 96
hours
> > but
> > the default COAMPS research mode dumps every 72. It would be nice
if I
> > could set the dump bucket and accumulation window within the
config file.
> > Does point_stat have any of these features?
> >
> >
> >
> > Justin Tsu
> >
> > Marine Meteorology Division
> >
> > Data Assimilation/Mesoscale Modeling
> >
> > Building 704 Room 212
> >
> > Naval Research Laboratory, Code 7531
> >
> > 7 Grace Hopper Avenue
> >
> > Monterey, CA 93943-5502
> >
> >
> >
> > Ph. (831) 656-4111
> >
> >
> >
> >
> >
>
>
>
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