[Met_help] [rt.rap.ucar.edu #100168] History for Use of ERA5 data in MET
John Halley Gotway via RT
met_help at ucar.edu
Fri Jun 11 13:29:33 MDT 2021
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Initial Request
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Dear MET team,
Hello again! I’m currently interested in validating ERA5 data against either point source or grid-based observations and so will be using point-stat and grid-stat. ERA5 data can be retrieved as spectral coefficients, or in a regridded Gaussian lat/lon format (see https://confluence.ecmwf.int/display/CKB/ERA5%3A+What+is+the+spatial+reference). Can either work with MET, or does it need to be the gridded version?
Thanks!
Becky Adams-Selin, Ph.D.
Senior Staff Scientist II
Convection, Chemistry, and Clouds Group Supervisor
Atmospheric and Environmental Research
________________________________
This email is intended solely for the recipient. It may contain privileged, proprietary or confidential information or material. If you are not the intended recipient, please delete this email and any attachments and notify the sender of the error.
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Complete Ticket History
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Subject: Use of ERA5 data in MET
From: John Halley Gotway
Time: Wed Jun 09 10:24:03 2021
Hi Becky,
Good news. Support for Gaussian grids was added to MET relatively
recently.
So I'd recommend using MET version 10.0.0 to read ERA5 data on a
Gaussian
grid. But the details just come down to file formats.
If it's in GRIB1 or GRIB2 format, it should work well. If it's in
NetCDF
format following the CF convention, then that should work well too.
If you send me a sample ERA5 datafile on a gaussian or lat/lon grid, I
could send you back an example of reading it into the MET tools.
John
On Wed, Jun 9, 2021 at 9:17 AM Adams-Selin, Becky via RT
<met_help at ucar.edu>
wrote:
>
> Wed Jun 09 09:17:40 2021: Request 100168 was acted upon.
> Transaction: Ticket created by RSelin at aer.com
> Queue: met_help
> Subject: Use of ERA5 data in MET
> Owner: Nobody
> Requestors: RSelin at aer.com
> Status: new
> Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=100168 >
>
>
> Dear MET team,
>
> Hello again! I’m currently interested in validating ERA5 data
against
> either point source or grid-based observations and so will be using
> point-stat and grid-stat. ERA5 data can be retrieved as spectral
> coefficients, or in a regridded Gaussian lat/lon format (see
>
https://confluence.ecmwf.int/display/CKB/ERA5%3A+What+is+the+spatial+reference).
> Can either work with MET, or does it need to be the gridded version?
>
> Thanks!
>
> Becky Adams-Selin, Ph.D.
> Senior Staff Scientist II
> Convection, Chemistry, and Clouds Group Supervisor
> Atmospheric and Environmental Research
>
> ________________________________
>
> This email is intended solely for the recipient. It may contain
> privileged, proprietary or confidential information or material. If
you are
> not the intended recipient, please delete this email and any
attachments
> and notify the sender of the error.
>
>
------------------------------------------------
Subject: Re: [rt.rap.ucar.edu #100168] Use of ERA5 data in MET
From: Adams-Selin, Becky
Time: Wed Jun 09 11:00:23 2021
John -
It should be GRIB2 on a gaussian grid. I think I've confirmed to
myself then that we don't want the spherical harmonics data though,
right?
That's my main question for now as I start downloading data to
initialize WRF. I'll be back in a month or so with specific questions
about reading in MET.
Thanks!
Becky Adams-Selin, Ph.D.
Senior Staff Scientist II
Convection, Chemistry, and Clouds Group Supervisor
Atmospheric and Environmental Research
On 6/9/21, 11:24 AM, "John Halley Gotway via RT" <met_help at ucar.edu>
wrote:
Caution: This email originated outside of the organization
Hi Becky,
Good news. Support for Gaussian grids was added to MET relatively
recently.
So I'd recommend using MET version 10.0.0 to read ERA5 data on a
Gaussian
grid. But the details just come down to file formats.
If it's in GRIB1 or GRIB2 format, it should work well. If it's in
NetCDF
format following the CF convention, then that should work well
too.
If you send me a sample ERA5 datafile on a gaussian or lat/lon
grid, I
could send you back an example of reading it into the MET tools.
John
On Wed, Jun 9, 2021 at 9:17 AM Adams-Selin, Becky via RT
<met_help at ucar.edu>
wrote:
>
> Wed Jun 09 09:17:40 2021: Request 100168 was acted upon.
> Transaction: Ticket created by RSelin at aer.com
> Queue: met_help
> Subject: Use of ERA5 data in MET
> Owner: Nobody
> Requestors: RSelin at aer.com
> Status: new
> Ticket <URL:
https://urldefense.com/v3/__https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=100168__;!!CAFLEWIB!X7ZU3JHzaqZK0JUj6BpjJk0QcYjrWtoVUxcvroSj06yoY65rTOq9pJ7gWw$
>
>
>
> Dear MET team,
>
> Hello again! I’m currently interested in validating ERA5 data
against
> either point source or grid-based observations and so will be
using
> point-stat and grid-stat. ERA5 data can be retrieved as spectral
> coefficients, or in a regridded Gaussian lat/lon format (see
>
https://urldefense.com/v3/__https://confluence.ecmwf.int/display/CKB/ERA5*3A*What*is*the*spatial*reference__;JSsrKysr!!CAFLEWIB!X7ZU3JHzaqZK0JUj6BpjJk0QcYjrWtoVUxcvroSj06yoY65rTOo6M2tHZA$
).
> Can either work with MET, or does it need to be the gridded
version?
>
> Thanks!
>
> Becky Adams-Selin, Ph.D.
> Senior Staff Scientist II
> Convection, Chemistry, and Clouds Group Supervisor
> Atmospheric and Environmental Research
>
> ________________________________
>
> This email is intended solely for the recipient. It may contain
> privileged, proprietary or confidential information or material.
If you are
> not the intended recipient, please delete this email and any
attachments
> and notify the sender of the error.
>
>
________________________________
This email is intended solely for the recipient. It may contain
privileged, proprietary or confidential information or material. If
you are not the intended recipient, please delete this email and any
attachments and notify the sender of the error.
------------------------------------------------
Subject: Use of ERA5 data in MET
From: John Halley Gotway
Time: Wed Jun 09 11:28:51 2021
Becky,
Yes, that's right. GRIB2 gaussian grid is the way to go... at least
for the
MET software.
John
On Wed, Jun 9, 2021 at 11:00 AM Adams-Selin, Becky via RT
<met_help at ucar.edu>
wrote:
>
> <URL: https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=100168 >
>
> John -
>
> It should be GRIB2 on a gaussian grid. I think I've confirmed to
myself
> then that we don't want the spherical harmonics data though, right?
>
> That's my main question for now as I start downloading data to
initialize
> WRF. I'll be back in a month or so with specific questions about
reading in
> MET.
>
> Thanks!
>
> Becky Adams-Selin, Ph.D.
> Senior Staff Scientist II
> Convection, Chemistry, and Clouds Group Supervisor
> Atmospheric and Environmental Research
>
> On 6/9/21, 11:24 AM, "John Halley Gotway via RT"
<met_help at ucar.edu>
> wrote:
>
> Caution: This email originated outside of the organization
>
> Hi Becky,
>
> Good news. Support for Gaussian grids was added to MET
relatively
> recently.
> So I'd recommend using MET version 10.0.0 to read ERA5 data on a
> Gaussian
> grid. But the details just come down to file formats.
>
> If it's in GRIB1 or GRIB2 format, it should work well. If it's
in
> NetCDF
> format following the CF convention, then that should work well
too.
>
> If you send me a sample ERA5 datafile on a gaussian or lat/lon
grid, I
> could send you back an example of reading it into the MET tools.
>
> John
>
> On Wed, Jun 9, 2021 at 9:17 AM Adams-Selin, Becky via RT <
> met_help at ucar.edu>
> wrote:
>
> >
> > Wed Jun 09 09:17:40 2021: Request 100168 was acted upon.
> > Transaction: Ticket created by RSelin at aer.com
> > Queue: met_help
> > Subject: Use of ERA5 data in MET
> > Owner: Nobody
> > Requestors: RSelin at aer.com
> > Status: new
> > Ticket <URL:
>
https://urldefense.com/v3/__https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=100168__;!!CAFLEWIB!X7ZU3JHzaqZK0JUj6BpjJk0QcYjrWtoVUxcvroSj06yoY65rTOq9pJ7gWw$
> >
> >
> >
> > Dear MET team,
> >
> > Hello again! I’m currently interested in validating ERA5 data
against
> > either point source or grid-based observations and so will be
using
> > point-stat and grid-stat. ERA5 data can be retrieved as
spectral
> > coefficients, or in a regridded Gaussian lat/lon format (see
> >
>
https://urldefense.com/v3/__https://confluence.ecmwf.int/display/CKB/ERA5*3A*What*is*the*spatial*reference__;JSsrKysr!!CAFLEWIB!X7ZU3JHzaqZK0JUj6BpjJk0QcYjrWtoVUxcvroSj06yoY65rTOo6M2tHZA$
> ).
> > Can either work with MET, or does it need to be the gridded
version?
> >
> > Thanks!
> >
> > Becky Adams-Selin, Ph.D.
> > Senior Staff Scientist II
> > Convection, Chemistry, and Clouds Group Supervisor
> > Atmospheric and Environmental Research
> >
> > ________________________________
> >
> > This email is intended solely for the recipient. It may
contain
> > privileged, proprietary or confidential information or
material. If
> you are
> > not the intended recipient, please delete this email and any
> attachments
> > and notify the sender of the error.
> >
> >
>
>
>
> ________________________________
>
> This email is intended solely for the recipient. It may contain
> privileged, proprietary or confidential information or material. If
you are
> not the intended recipient, please delete this email and any
attachments
> and notify the sender of the error.
>
>
>
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