[Met_help] [rt.rap.ucar.edu #82205] History for processing ECMWF datasets
John Halley Gotway via RT
met_help at ucar.edu
Wed Oct 4 14:04:01 MDT 2017
----------------------------------------------------------------
Initial Request
----------------------------------------------------------------
Dear MET help staff,
I hope you are doing well at your end.
I am trying to evaluate model performance of precipitation using ECMWF data
sets.
Currently, I'm trying to use the data set from NCAR (ds627.0), but can't
run pcp_combine v6 on them.
=======================================================
The error message is:
"ERROR : gds_to_order() -> Grid type 4 not currently supported."
This is the output from wgrib:
rec 1:0:date 2014060100 TP kpds5=228 kpds6=1 kpds7=0 levels=(0,0) grid=255
sfc ECext=1 class=14 type=9 stream=1025 Version=0001 3hr fcst:
TP=Total precipitation [m]
timerange 0 P1 3 P2 0 TimeU 1 nx 512 ny 256 GDS grid 4 num_in_ave 0
missing 0
center 98 subcenter 0 process 255 Table 128 scan: WE:NS winds(N/S)
gaussian: lat 89.463000 to -89.463000
long 0.000000 to 359.297000 by 0.703000, (512 x 256) scan 0
mode 128 bdsgrid 1
min/max data 0 0.0360537 num bits 16 BDS_Ref 0 DecScale 0 BinScale -20
=========================================================
NCAR has ECMWF data on a Gaussian grid. The documentation says: "variables
originally represented as spectral coefficients or archived on a reduced
Gaussian grid are transformed to a regular 512 longitude by 256 latitude
N128 Gaussian grid"
I've read some posts on MET-help email archive regarding ECMWF, and it
seems those posts used latlon grids.
So, my questions are:
1) Is there a way to process ECMWF data from NCAR (ds627.0) ?
2) Do I have to use ECMWF downloaded directly from the European website
instead ??
I still have not clear that if I use the ECMWF data from the european
website , should I need additional preprocessing, specifically grid
transformation like spectral to latlon ??
Please excuse if I'm overlooking something obvious.
Your help is appreciated.
Thank you so much in advance,
Best,
Victor
----------------------------------------------------------------
Complete Ticket History
----------------------------------------------------------------
Subject: processing ECMWF datasets
From: John Halley Gotway
Time: Tue Oct 03 16:52:31 2017
Hello Victor,
Thanks for pointing me to this ECWMF dataset in the RDA. Yes, MET
version
6.0 does not include support for Gaussian grids.
We were already planning on adding support in version 6.1 of MET.
However
I used this data for testing and see that the support is not yet
complete.
I get the following error message from the development version of the
code:
ERROR :
ERROR : GaussianGrid::latlon_to_xy() not implemented!
ERROR :
I'll follow up with the developer of this code in the hopes that we
can get
it working smoothly for version 6.1.
While the current MET release, 6.0 does not support it, the copygb and
wgrib utilities do. One way you could use this data in MET is by
first
regridding it using the copygb utility.
Sorry I don't have a better answer for you, but hopefully we can get
this
all straightened out.
Thanks,
John Halley Gotway
On Mon, Oct 2, 2017 at 2:19 PM, Victor Almanza via RT
<met_help at ucar.edu>
wrote:
>
> Mon Oct 02 14:19:43 2017: Request 82205 was acted upon.
> Transaction: Ticket created by victor.al.vlz at gmail.com
> Queue: met_help
> Subject: processing ECMWF datasets
> Owner: Nobody
> Requestors: victor.al.vlz at gmail.com
> Status: new
> Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=82205 >
>
>
> Dear MET help staff,
>
> I hope you are doing well at your end.
>
> I am trying to evaluate model performance of precipitation using
ECMWF data
> sets.
>
> Currently, I'm trying to use the data set from NCAR (ds627.0), but
can't
> run pcp_combine v6 on them.
>
> =======================================================
>
> The error message is:
>
> "ERROR : gds_to_order() -> Grid type 4 not currently supported."
>
> This is the output from wgrib:
>
> rec 1:0:date 2014060100 TP kpds5=228 kpds6=1 kpds7=0 levels=(0,0)
grid=255
> sfc ECext=1 class=14 type=9 stream=1025 Version=0001 3hr fcst:
> TP=Total precipitation [m]
> timerange 0 P1 3 P2 0 TimeU 1 nx 512 ny 256 GDS grid 4 num_in_ave
0
> missing 0
> center 98 subcenter 0 process 255 Table 128 scan: WE:NS winds(N/S)
> gaussian: lat 89.463000 to -89.463000
> long 0.000000 to 359.297000 by 0.703000, (512 x 256)
scan 0
> mode 128 bdsgrid 1
> min/max data 0 0.0360537 num bits 16 BDS_Ref 0 DecScale 0
BinScale -20
>
> =========================================================
>
>
> NCAR has ECMWF data on a Gaussian grid. The documentation says:
"variables
> originally represented as spectral coefficients or archived on a
reduced
> Gaussian grid are transformed to a regular 512 longitude by 256
latitude
> N128 Gaussian grid"
>
> I've read some posts on MET-help email archive regarding ECMWF, and
it
> seems those posts used latlon grids.
>
> So, my questions are:
>
> 1) Is there a way to process ECMWF data from NCAR (ds627.0) ?
> 2) Do I have to use ECMWF downloaded directly from the European
website
> instead ??
>
> I still have not clear that if I use the ECMWF data from the
european
> website , should I need additional preprocessing, specifically grid
> transformation like spectral to latlon ??
>
> Please excuse if I'm overlooking something obvious.
> Your help is appreciated.
>
> Thank you so much in advance,
>
> Best,
>
> Victor
>
>
------------------------------------------------
Subject: processing ECMWF datasets
From: Victor Almanza
Time: Tue Oct 03 18:57:43 2017
Dear John
Thanks for the quick reply and the hints on using copygb.
I think adding support for NCAR's ECMWF dataset would be great.
I downloaded some test files from ECMWF main website and I could get
them
to be processed on MET v6.
I tried both grib and NetCDF. They are in a latlon grid.
I will use the NetCDF ones, since it simplifies things at this stage.
Having support for CF compliant files is really, really useful.
I have a separate question. Could you please provide some guidance on
how
to convert from "HHHHH hours since 1900-01-01 00:00:0.0" to a format
like
YYYY-MM-DD_HH ?
I'ts basically converting from an integer with units "hours since
1900-01-01 00:00:0.0" to a date string.
I'm trying with the "date" command since I will process the files in a
bash
shell script. I think I have to consider the "seconds from 1970".
I also looked at the MET's "time_strings.cc" subroutine, but I am not
sure
it uses the date command.
Thanks again for your help and time,
Best,
Victor
On Tue, Oct 3, 2017 at 3:52 PM, John Halley Gotway via RT
<met_help at ucar.edu
> wrote:
> Hello Victor,
>
> Thanks for pointing me to this ECWMF dataset in the RDA. Yes, MET
version
> 6.0 does not include support for Gaussian grids.
>
> We were already planning on adding support in version 6.1 of MET.
However
> I used this data for testing and see that the support is not yet
complete.
> I get the following error message from the development version of
the code:
>
> ERROR :
> ERROR : GaussianGrid::latlon_to_xy() not implemented!
> ERROR :
>
> I'll follow up with the developer of this code in the hopes that we
can get
> it working smoothly for version 6.1.
>
> While the current MET release, 6.0 does not support it, the copygb
and
> wgrib utilities do. One way you could use this data in MET is by
first
> regridding it using the copygb utility.
>
> Sorry I don't have a better answer for you, but hopefully we can get
this
> all straightened out.
>
> Thanks,
> John Halley Gotway
>
>
> On Mon, Oct 2, 2017 at 2:19 PM, Victor Almanza via RT
<met_help at ucar.edu>
> wrote:
>
> >
> > Mon Oct 02 14:19:43 2017: Request 82205 was acted upon.
> > Transaction: Ticket created by victor.al.vlz at gmail.com
> > Queue: met_help
> > Subject: processing ECMWF datasets
> > Owner: Nobody
> > Requestors: victor.al.vlz at gmail.com
> > Status: new
> > Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=82205 >
> >
> >
> > Dear MET help staff,
> >
> > I hope you are doing well at your end.
> >
> > I am trying to evaluate model performance of precipitation using
ECMWF
> data
> > sets.
> >
> > Currently, I'm trying to use the data set from NCAR (ds627.0), but
can't
> > run pcp_combine v6 on them.
> >
> > =======================================================
> >
> > The error message is:
> >
> > "ERROR : gds_to_order() -> Grid type 4 not currently supported."
> >
> > This is the output from wgrib:
> >
> > rec 1:0:date 2014060100 TP kpds5=228 kpds6=1 kpds7=0 levels=(0,0)
> grid=255
> > sfc ECext=1 class=14 type=9 stream=1025 Version=0001 3hr fcst:
> > TP=Total precipitation [m]
> > timerange 0 P1 3 P2 0 TimeU 1 nx 512 ny 256 GDS grid 4
num_in_ave 0
> > missing 0
> > center 98 subcenter 0 process 255 Table 128 scan: WE:NS
winds(N/S)
> > gaussian: lat 89.463000 to -89.463000
> > long 0.000000 to 359.297000 by 0.703000, (512 x 256)
scan 0
> > mode 128 bdsgrid 1
> > min/max data 0 0.0360537 num bits 16 BDS_Ref 0 DecScale 0
BinScale
> -20
> >
> > =========================================================
> >
> >
> > NCAR has ECMWF data on a Gaussian grid. The documentation says:
> "variables
> > originally represented as spectral coefficients or archived on a
reduced
> > Gaussian grid are transformed to a regular 512 longitude by 256
latitude
> > N128 Gaussian grid"
> >
> > I've read some posts on MET-help email archive regarding ECMWF,
and it
> > seems those posts used latlon grids.
> >
> > So, my questions are:
> >
> > 1) Is there a way to process ECMWF data from NCAR (ds627.0) ?
> > 2) Do I have to use ECMWF downloaded directly from the European
website
> > instead ??
> >
> > I still have not clear that if I use the ECMWF data from the
european
> > website , should I need additional preprocessing, specifically
grid
> > transformation like spectral to latlon ??
> >
> > Please excuse if I'm overlooking something obvious.
> > Your help is appreciated.
> >
> > Thank you so much in advance,
> >
> > Best,
> >
> > Victor
> >
> >
>
>
------------------------------------------------
Subject: processing ECMWF datasets
From: John Halley Gotway
Time: Tue Oct 03 20:10:27 2017
Victor,
Here's an example of some date commands included in the FAQs.
However, be
aware that the lines that begin with "-ud" should really be "date
-ud".
The "date" shows up on the previous line. There were some mistakes in
translating this to html:
https://www.dtcenter.org/met/users/support/faqs/faq.php?name=file_io&category=unix_time_conversion
Here's another example that'd help:
date -ud '1977-08-07 UTC '100' hours' +%Y%m%d_%H%M%S
This defines a reference date and then adds 100 hours to it.
Thanks,
John
On Tue, Oct 3, 2017 at 6:57 PM, Victor Almanza via RT
<met_help at ucar.edu>
wrote:
>
> <URL: https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=82205 >
>
> Dear John
>
> Thanks for the quick reply and the hints on using copygb.
> I think adding support for NCAR's ECMWF dataset would be great.
>
> I downloaded some test files from ECMWF main website and I could get
them
> to be processed on MET v6.
> I tried both grib and NetCDF. They are in a latlon grid.
> I will use the NetCDF ones, since it simplifies things at this
stage.
> Having support for CF compliant files is really, really useful.
>
> I have a separate question. Could you please provide some guidance
on how
> to convert from "HHHHH hours since 1900-01-01 00:00:0.0" to a format
like
> YYYY-MM-DD_HH ?
> I'ts basically converting from an integer with units "hours since
> 1900-01-01 00:00:0.0" to a date string.
>
> I'm trying with the "date" command since I will process the files in
a bash
> shell script. I think I have to consider the "seconds from 1970".
> I also looked at the MET's "time_strings.cc" subroutine, but I am
not sure
> it uses the date command.
>
> Thanks again for your help and time,
>
> Best,
>
> Victor
>
>
>
> On Tue, Oct 3, 2017 at 3:52 PM, John Halley Gotway via RT <
> met_help at ucar.edu
> > wrote:
>
> > Hello Victor,
> >
> > Thanks for pointing me to this ECWMF dataset in the RDA. Yes, MET
> version
> > 6.0 does not include support for Gaussian grids.
> >
> > We were already planning on adding support in version 6.1 of MET.
> However
> > I used this data for testing and see that the support is not yet
> complete.
> > I get the following error message from the development version of
the
> code:
> >
> > ERROR :
> > ERROR : GaussianGrid::latlon_to_xy() not implemented!
> > ERROR :
> >
> > I'll follow up with the developer of this code in the hopes that
we can
> get
> > it working smoothly for version 6.1.
> >
> > While the current MET release, 6.0 does not support it, the copygb
and
> > wgrib utilities do. One way you could use this data in MET is by
first
> > regridding it using the copygb utility.
> >
> > Sorry I don't have a better answer for you, but hopefully we can
get this
> > all straightened out.
> >
> > Thanks,
> > John Halley Gotway
> >
> >
> > On Mon, Oct 2, 2017 at 2:19 PM, Victor Almanza via RT
<met_help at ucar.edu
> >
> > wrote:
> >
> > >
> > > Mon Oct 02 14:19:43 2017: Request 82205 was acted upon.
> > > Transaction: Ticket created by victor.al.vlz at gmail.com
> > > Queue: met_help
> > > Subject: processing ECMWF datasets
> > > Owner: Nobody
> > > Requestors: victor.al.vlz at gmail.com
> > > Status: new
> > > Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=82205
> >
> > >
> > >
> > > Dear MET help staff,
> > >
> > > I hope you are doing well at your end.
> > >
> > > I am trying to evaluate model performance of precipitation using
ECMWF
> > data
> > > sets.
> > >
> > > Currently, I'm trying to use the data set from NCAR (ds627.0),
but
> can't
> > > run pcp_combine v6 on them.
> > >
> > > =======================================================
> > >
> > > The error message is:
> > >
> > > "ERROR : gds_to_order() -> Grid type 4 not currently
supported."
> > >
> > > This is the output from wgrib:
> > >
> > > rec 1:0:date 2014060100 TP kpds5=228 kpds6=1 kpds7=0
levels=(0,0)
> > grid=255
> > > sfc ECext=1 class=14 type=9 stream=1025 Version=0001 3hr fcst:
> > > TP=Total precipitation [m]
> > > timerange 0 P1 3 P2 0 TimeU 1 nx 512 ny 256 GDS grid 4
num_in_ave 0
> > > missing 0
> > > center 98 subcenter 0 process 255 Table 128 scan: WE:NS
winds(N/S)
> > > gaussian: lat 89.463000 to -89.463000
> > > long 0.000000 to 359.297000 by 0.703000, (512 x 256)
scan 0
> > > mode 128 bdsgrid 1
> > > min/max data 0 0.0360537 num bits 16 BDS_Ref 0 DecScale 0
BinScale
> > -20
> > >
> > > =========================================================
> > >
> > >
> > > NCAR has ECMWF data on a Gaussian grid. The documentation says:
> > "variables
> > > originally represented as spectral coefficients or archived on a
> reduced
> > > Gaussian grid are transformed to a regular 512 longitude by 256
> latitude
> > > N128 Gaussian grid"
> > >
> > > I've read some posts on MET-help email archive regarding ECMWF,
and it
> > > seems those posts used latlon grids.
> > >
> > > So, my questions are:
> > >
> > > 1) Is there a way to process ECMWF data from NCAR (ds627.0) ?
> > > 2) Do I have to use ECMWF downloaded directly from the European
website
> > > instead ??
> > >
> > > I still have not clear that if I use the ECMWF data from the
european
> > > website , should I need additional preprocessing, specifically
grid
> > > transformation like spectral to latlon ??
> > >
> > > Please excuse if I'm overlooking something obvious.
> > > Your help is appreciated.
> > >
> > > Thank you so much in advance,
> > >
> > > Best,
> > >
> > > Victor
> > >
> > >
> >
> >
>
>
------------------------------------------------
Subject: processing ECMWF datasets
From: Victor Almanza
Time: Tue Oct 03 22:04:48 2017
Dear John,
I really appreciate your time for showing how to use the command. It's
very
helpful
I will try those commands and get back to you.
Thank you very much,
Best regards,
Victor
On Tue, Oct 3, 2017 at 7:10 PM John Halley Gotway via RT
<met_help at ucar.edu>
wrote:
> Victor,
>
> Here's an example of some date commands included in the FAQs.
However, be
> aware that the lines that begin with "-ud" should really be "date
-ud".
> The "date" shows up on the previous line. There were some mistakes
in
> translating this to html:
>
>
>
https://www.dtcenter.org/met/users/support/faqs/faq.php?name=file_io&category=unix_time_conversion
>
> Here's another example that'd help:
>
> date -ud '1977-08-07 UTC '100' hours' +%Y%m%d_%H%M%S
>
> This defines a reference date and then adds 100 hours to it.
>
> Thanks,
> John
>
> On Tue, Oct 3, 2017 at 6:57 PM, Victor Almanza via RT
<met_help at ucar.edu>
> wrote:
>
> >
> > <URL: https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=82205 >
> >
> > Dear John
> >
> > Thanks for the quick reply and the hints on using copygb.
> > I think adding support for NCAR's ECMWF dataset would be great.
> >
> > I downloaded some test files from ECMWF main website and I could
get them
> > to be processed on MET v6.
> > I tried both grib and NetCDF. They are in a latlon grid.
> > I will use the NetCDF ones, since it simplifies things at this
stage.
> > Having support for CF compliant files is really, really useful.
> >
> > I have a separate question. Could you please provide some guidance
on how
> > to convert from "HHHHH hours since 1900-01-01 00:00:0.0" to a
format like
> > YYYY-MM-DD_HH ?
> > I'ts basically converting from an integer with units "hours since
> > 1900-01-01 00:00:0.0" to a date string.
> >
> > I'm trying with the "date" command since I will process the files
in a
> bash
> > shell script. I think I have to consider the "seconds from 1970".
> > I also looked at the MET's "time_strings.cc" subroutine, but I am
not
> sure
> > it uses the date command.
> >
> > Thanks again for your help and time,
> >
> > Best,
> >
> > Victor
> >
> >
> >
> > On Tue, Oct 3, 2017 at 3:52 PM, John Halley Gotway via RT <
> > met_help at ucar.edu
> > > wrote:
> >
> > > Hello Victor,
> > >
> > > Thanks for pointing me to this ECWMF dataset in the RDA. Yes,
MET
> > version
> > > 6.0 does not include support for Gaussian grids.
> > >
> > > We were already planning on adding support in version 6.1 of
MET.
> > However
> > > I used this data for testing and see that the support is not yet
> > complete.
> > > I get the following error message from the development version
of the
> > code:
> > >
> > > ERROR :
> > > ERROR : GaussianGrid::latlon_to_xy() not implemented!
> > > ERROR :
> > >
> > > I'll follow up with the developer of this code in the hopes that
we can
> > get
> > > it working smoothly for version 6.1.
> > >
> > > While the current MET release, 6.0 does not support it, the
copygb and
> > > wgrib utilities do. One way you could use this data in MET is
by first
> > > regridding it using the copygb utility.
> > >
> > > Sorry I don't have a better answer for you, but hopefully we can
get
> this
> > > all straightened out.
> > >
> > > Thanks,
> > > John Halley Gotway
> > >
> > >
> > > On Mon, Oct 2, 2017 at 2:19 PM, Victor Almanza via RT <
> met_help at ucar.edu
> > >
> > > wrote:
> > >
> > > >
> > > > Mon Oct 02 14:19:43 2017: Request 82205 was acted upon.
> > > > Transaction: Ticket created by victor.al.vlz at gmail.com
> > > > Queue: met_help
> > > > Subject: processing ECMWF datasets
> > > > Owner: Nobody
> > > > Requestors: victor.al.vlz at gmail.com
> > > > Status: new
> > > > Ticket <URL:
> https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=82205
> > >
> > > >
> > > >
> > > > Dear MET help staff,
> > > >
> > > > I hope you are doing well at your end.
> > > >
> > > > I am trying to evaluate model performance of precipitation
using
> ECMWF
> > > data
> > > > sets.
> > > >
> > > > Currently, I'm trying to use the data set from NCAR (ds627.0),
but
> > can't
> > > > run pcp_combine v6 on them.
> > > >
> > > > =======================================================
> > > >
> > > > The error message is:
> > > >
> > > > "ERROR : gds_to_order() -> Grid type 4 not currently
supported."
> > > >
> > > > This is the output from wgrib:
> > > >
> > > > rec 1:0:date 2014060100 TP kpds5=228 kpds6=1 kpds7=0
levels=(0,0)
> > > grid=255
> > > > sfc ECext=1 class=14 type=9 stream=1025 Version=0001 3hr fcst:
> > > > TP=Total precipitation [m]
> > > > timerange 0 P1 3 P2 0 TimeU 1 nx 512 ny 256 GDS grid 4
num_in_ave
> 0
> > > > missing 0
> > > > center 98 subcenter 0 process 255 Table 128 scan: WE:NS
winds(N/S)
> > > > gaussian: lat 89.463000 to -89.463000
> > > > long 0.000000 to 359.297000 by 0.703000, (512 x
256)
> scan 0
> > > > mode 128 bdsgrid 1
> > > > min/max data 0 0.0360537 num bits 16 BDS_Ref 0 DecScale 0
> BinScale
> > > -20
> > > >
> > > > =========================================================
> > > >
> > > >
> > > > NCAR has ECMWF data on a Gaussian grid. The documentation
says:
> > > "variables
> > > > originally represented as spectral coefficients or archived on
a
> > reduced
> > > > Gaussian grid are transformed to a regular 512 longitude by
256
> > latitude
> > > > N128 Gaussian grid"
> > > >
> > > > I've read some posts on MET-help email archive regarding
ECMWF, and
> it
> > > > seems those posts used latlon grids.
> > > >
> > > > So, my questions are:
> > > >
> > > > 1) Is there a way to process ECMWF data from NCAR (ds627.0) ?
> > > > 2) Do I have to use ECMWF downloaded directly from the
European
> website
> > > > instead ??
> > > >
> > > > I still have not clear that if I use the ECMWF data from the
european
> > > > website , should I need additional preprocessing, specifically
grid
> > > > transformation like spectral to latlon ??
> > > >
> > > > Please excuse if I'm overlooking something obvious.
> > > > Your help is appreciated.
> > > >
> > > > Thank you so much in advance,
> > > >
> > > > Best,
> > > >
> > > > Victor
> > > >
> > > >
> > >
> > >
> >
> >
>
>
------------------------------------------------
Subject: processing ECMWF datasets
From: Victor Almanza
Time: Wed Oct 04 11:03:40 2017
Dear John,
The FAQs and your example in particular clarified my question.
THANK you very much.
Have a nice day,
Victor
On Tue, Oct 3, 2017 at 7:10 PM, John Halley Gotway via RT
<met_help at ucar.edu
> wrote:
> Victor,
>
> Here's an example of some date commands included in the FAQs.
However, be
> aware that the lines that begin with "-ud" should really be "date
-ud".
> The "date" shows up on the previous line. There were some mistakes
in
> translating this to html:
>
> https://www.dtcenter.org/met/users/support/faqs/faq.php?
> name=file_io&category=unix_time_conversion
>
> Here's another example that'd help:
>
> date -ud '1977-08-07 UTC '100' hours' +%Y%m%d_%H%M%S
>
> This defines a reference date and then adds 100 hours to it.
>
> Thanks,
> John
>
> On Tue, Oct 3, 2017 at 6:57 PM, Victor Almanza via RT
<met_help at ucar.edu>
> wrote:
>
> >
> > <URL: https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=82205 >
> >
> > Dear John
> >
> > Thanks for the quick reply and the hints on using copygb.
> > I think adding support for NCAR's ECMWF dataset would be great.
> >
> > I downloaded some test files from ECMWF main website and I could
get them
> > to be processed on MET v6.
> > I tried both grib and NetCDF. They are in a latlon grid.
> > I will use the NetCDF ones, since it simplifies things at this
stage.
> > Having support for CF compliant files is really, really useful.
> >
> > I have a separate question. Could you please provide some guidance
on how
> > to convert from "HHHHH hours since 1900-01-01 00:00:0.0" to a
format like
> > YYYY-MM-DD_HH ?
> > I'ts basically converting from an integer with units "hours since
> > 1900-01-01 00:00:0.0" to a date string.
> >
> > I'm trying with the "date" command since I will process the files
in a
> bash
> > shell script. I think I have to consider the "seconds from 1970".
> > I also looked at the MET's "time_strings.cc" subroutine, but I am
not
> sure
> > it uses the date command.
> >
> > Thanks again for your help and time,
> >
> > Best,
> >
> > Victor
> >
> >
> >
> > On Tue, Oct 3, 2017 at 3:52 PM, John Halley Gotway via RT <
> > met_help at ucar.edu
> > > wrote:
> >
> > > Hello Victor,
> > >
> > > Thanks for pointing me to this ECWMF dataset in the RDA. Yes,
MET
> > version
> > > 6.0 does not include support for Gaussian grids.
> > >
> > > We were already planning on adding support in version 6.1 of
MET.
> > However
> > > I used this data for testing and see that the support is not yet
> > complete.
> > > I get the following error message from the development version
of the
> > code:
> > >
> > > ERROR :
> > > ERROR : GaussianGrid::latlon_to_xy() not implemented!
> > > ERROR :
> > >
> > > I'll follow up with the developer of this code in the hopes that
we can
> > get
> > > it working smoothly for version 6.1.
> > >
> > > While the current MET release, 6.0 does not support it, the
copygb and
> > > wgrib utilities do. One way you could use this data in MET is
by first
> > > regridding it using the copygb utility.
> > >
> > > Sorry I don't have a better answer for you, but hopefully we can
get
> this
> > > all straightened out.
> > >
> > > Thanks,
> > > John Halley Gotway
> > >
> > >
> > > On Mon, Oct 2, 2017 at 2:19 PM, Victor Almanza via RT <
> met_help at ucar.edu
> > >
> > > wrote:
> > >
> > > >
> > > > Mon Oct 02 14:19:43 2017: Request 82205 was acted upon.
> > > > Transaction: Ticket created by victor.al.vlz at gmail.com
> > > > Queue: met_help
> > > > Subject: processing ECMWF datasets
> > > > Owner: Nobody
> > > > Requestors: victor.al.vlz at gmail.com
> > > > Status: new
> > > > Ticket <URL: https://rt.rap.ucar.edu/rt/
> Ticket/Display.html?id=82205
> > >
> > > >
> > > >
> > > > Dear MET help staff,
> > > >
> > > > I hope you are doing well at your end.
> > > >
> > > > I am trying to evaluate model performance of precipitation
using
> ECMWF
> > > data
> > > > sets.
> > > >
> > > > Currently, I'm trying to use the data set from NCAR (ds627.0),
but
> > can't
> > > > run pcp_combine v6 on them.
> > > >
> > > > =======================================================
> > > >
> > > > The error message is:
> > > >
> > > > "ERROR : gds_to_order() -> Grid type 4 not currently
supported."
> > > >
> > > > This is the output from wgrib:
> > > >
> > > > rec 1:0:date 2014060100 TP kpds5=228 kpds6=1 kpds7=0
levels=(0,0)
> > > grid=255
> > > > sfc ECext=1 class=14 type=9 stream=1025 Version=0001 3hr fcst:
> > > > TP=Total precipitation [m]
> > > > timerange 0 P1 3 P2 0 TimeU 1 nx 512 ny 256 GDS grid 4
num_in_ave
> 0
> > > > missing 0
> > > > center 98 subcenter 0 process 255 Table 128 scan: WE:NS
winds(N/S)
> > > > gaussian: lat 89.463000 to -89.463000
> > > > long 0.000000 to 359.297000 by 0.703000, (512 x
256)
> scan 0
> > > > mode 128 bdsgrid 1
> > > > min/max data 0 0.0360537 num bits 16 BDS_Ref 0 DecScale 0
> BinScale
> > > -20
> > > >
> > > > =========================================================
> > > >
> > > >
> > > > NCAR has ECMWF data on a Gaussian grid. The documentation
says:
> > > "variables
> > > > originally represented as spectral coefficients or archived on
a
> > reduced
> > > > Gaussian grid are transformed to a regular 512 longitude by
256
> > latitude
> > > > N128 Gaussian grid"
> > > >
> > > > I've read some posts on MET-help email archive regarding
ECMWF, and
> it
> > > > seems those posts used latlon grids.
> > > >
> > > > So, my questions are:
> > > >
> > > > 1) Is there a way to process ECMWF data from NCAR (ds627.0) ?
> > > > 2) Do I have to use ECMWF downloaded directly from the
European
> website
> > > > instead ??
> > > >
> > > > I still have not clear that if I use the ECMWF data from the
european
> > > > website , should I need additional preprocessing, specifically
grid
> > > > transformation like spectral to latlon ??
> > > >
> > > > Please excuse if I'm overlooking something obvious.
> > > > Your help is appreciated.
> > > >
> > > > Thank you so much in advance,
> > > >
> > > > Best,
> > > >
> > > > Victor
> > > >
> > > >
> > >
> > >
> >
> >
>
>
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