SOLUTION for gfsptiles/gfs not being available or too slow

Compiling NMM/ARW code for EMS system, upgrading WRF cores on your own, changing EMS scripts to suit your particular needs, and other modifications to original EMS distribution goes in this forum. These are officially unsupported actions.
meteoadriatic
Posts: 1604
Joined: Wed Aug 19, 2009 10:05 am

SOLUTION for gfsptiles/gfs not being available or too slow

Post by meteoadriatic »

OK I switched to NOMADS http server and it is fast. Here is url for full grib2 GFS files:

http://nomads.ncep.noaa.gov/pub/data/nccf/com/gfs/prod

I also modified some EMS files to be able to use this instead of original NOAA server. Here is what I did:

1) Copy $EMS/conf/grib_info/gfs_gribinfo.conf to $EMS/conf/grib_info/gfs-nomads_gribinfo.conf

2) Edit $EMS/conf/grib_info/gfs-nomads_gribinfo.conf
a) go around line 291 and comment out those original SERVER-FTP and SERVER-HTTP entries
b) below them, add this line:

Code: Select all

SERVER-HTTP  = NOMADS:/pub/data/nccf/com/gfs/prod/gfs.YYYYMMDDCC/gfs.tCCz.pgrb2fFF
3) Edit $EMS/conf/ems_prep/prep_global.conf
Around line 42, add this line:

Code: Select all

NOMADS   = nomads.ncep.noaa.gov
Now, you can use "gfs-nomads" for your DSETS value in ems_autorun.conf or however you usually set DSETS.

This guide works on EMS v3.1 but I think it should also with newer versions. Feel free to add something if I missed.

I don't have solution for gfsptiles.
beowrf
Posts: 43
Joined: Sat Jul 23, 2011 3:07 pm

Re: SOLUTION for gfsptiles/gfs not being available or too slow

Post by beowrf »

Many thanks, Ivan!
Cheers,
J
Antonix
Posts: 260
Joined: Fri Oct 16, 2009 8:53 am

Re: SOLUTION for gfsptiles/gfs not being available or too slow

Post by Antonix »

dont work in my case (3.4 version) :x
meteoadriatic
Posts: 1604
Joined: Wed Aug 19, 2009 10:05 am

Re: SOLUTION for gfsptiles/gfs not being available or too slow

Post by meteoadriatic »

Antonix wrote:dont work in my case (3.4 version) :x
Symptoms?
meteo60
Posts: 120
Joined: Tue Apr 17, 2012 4:50 pm

Re: SOLUTION for gfsptiles/gfs not being available or too slow

Post by meteo60 »

On V3.4 nomads is already set in prep_global.conf.

I tested this way yesterday on V3.4 and it doesn't work...
meteoadriatic
Posts: 1604
Joined: Wed Aug 19, 2009 10:05 am

Re: SOLUTION for gfsptiles/gfs not being available or too slow

Post by meteoadriatic »

meteo60 wrote:it doesn't work...
Symptoms?
meteo60
Posts: 120
Joined: Tue Apr 17, 2012 4:50 pm

Re: SOLUTION for gfsptiles/gfs not being available or too slow

Post by meteo60 »

In log: "not currently avalaible" when ems_prep try to DL grib.
meteoadriatic
Posts: 1604
Joined: Wed Aug 19, 2009 10:05 am

Re: SOLUTION for gfsptiles/gfs not being available or too slow

Post by meteoadriatic »

Yes there is NOMADS entry in prep_global.conf from v3.4, but did you created new dset file to be able to force using it (steps 1 and 2 in my guide)?
meteo60
Posts: 120
Joined: Tue Apr 17, 2012 4:50 pm

Re: SOLUTION for gfsptiles/gfs not being available or too slow

Post by meteo60 »

I'll test it in the next run soon...

Is the grib in /pub/data/nccf/com/gfs/prod/gfs.YYYYMMDDCC/gfs.tCCz.pgrb2fFF are 1 or 0.5 degrees? I think this is 1°, but WRF needs 0.5°??
meteoadriatic
Posts: 1604
Joined: Wed Aug 19, 2009 10:05 am

Re: SOLUTION for gfsptiles/gfs not being available or too slow

Post by meteoadriatic »

They are 0.5°. GFS forecast grib2 files with file size ~50MB are 0.5°. 1° versions are much smaller.
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