Using GFS 0.25° grid dataset

[windyweek]

Great news everyone!

The GFS 0.25 grid "b" files are now also available for use through the GFS grib filter. The endpoint we need to use is filter_gfs_0p25b.pl (notice the "b" in there).

Quoting the official NCEP communique:

"GFS users,

NCEP has made the GFS quarter degree secondary parameters (gfs.tCCz.pgrb2b.0p25.fFFF) available through grib filter to allow for partial downloads. We hope that users will take advantage of this to alleviate some of the bandwidth issues we are experiencing during peak periods. You can start using the path through here -

filter_gfs_0p25b.pl

Please let us know if you have any questions.

Carissa Klemmer
NCEP Central Operations
Production Management Branch Dataflow Team
301-683-3835
_______________________________________________
NCEP.list.NOMADS-ftpprd mailing list
NCEP.list.NOMADS-ftpprd@lstsrv.ncep.noaa.gov...
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"

Happy filtering!
-Ivan

[underxristof]

Is it possible to have a bit more detailed information on how to implement GFS 0.25 grid tiles? You know for the newbies...
Do we need to edit the gfs-para_gribinfo.conf and Vtable.GFSPARA files?
thanks

[meteoadriatic]

Hello,

all that doesn't work anymore. GFS parallel run isn't available now. But, if you have latest EMS, just use gfsp25ptile as dset option and you have it.

[alfe]

Has anyone tried to use that script given earlier in this topics :

curl "http://nomads.ncep.noaa.gov/cgi-bin/fil ... fs."$(date +"%Y")""$DATE_MONTH""$START_DAY""$CYCLE"" -o /home/andrea/wrfems/runs/arw/grib/"$(date +"%#y")""$DATE_MONTH""$START_DAY""$CYCLE".gfs.t"$CYCLE"z.pgrb2f"$TIME"

How do you set the variables such as CYCLE, DATE_MONTH... ?
Thanks

[meteoadriatic]

I like to use start scripts for that if my goal is operational forecast

Code: Select all

#!/bin/bash

YYYY=`date +%Y`
MM=`date +%m`
DD=`date +%d`
HH=00
FLENGTH=66

/home/nmmb/MET/./met_main.sh ${YYYY} ${MM} ${DD} ${HH} ${FLENGTH} > /home/nmmb/LOGS/met_main_00.log

YYYY, MM and DD are created according to date command output, which means they are set dynamically depending on current time when the script is executed.

That is for example start_00.sh script. Then, in /home/nmmb/MET/met_main.sh script, I receive those variables with:

Code: Select all

        START_YYYY="$1"
        START_MM="$2"
        START_DD="$3"
        START_HH="$4"
        FLENGTH="$5"

Where $1 is first argument, $2 second, and so on... Then I use START_YYYY and others inside main script to download GFS and do other usefull stuff with run date/time information. Of course you can do it all within single script if you prefer.