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20030604: help on GFS grids and WMO headers

>From: Tim Brown <address@hidden>
>Organization: University of Nevada-Reno/DRI
>Keywords: 200306042247.h54MlOLd009329 IDD GFS

Hi Tim,

>Would you please be able to either point me to the proper contact person
>or information source to obtain the following information:  A list of all
>GFS forecast grids from NCEP that are available via LDM, and what are
>their associated WMO headers.  Thank you.

For reference, the GFS is the AVN, just renamed.

The easiest way to get any IDD headers is to use the LDM 'notifyme' command.
Here is an example for doing this for AVN grids:

notifyme -vxl- -f HDS -o 3600 -h thelma.ucar.edu -p "/mAVN|/mSSIAVN"

The MRF grids which are currently in NOAAPORT (and thus in the IDD)
are produced from the AVN model (being renamed GFS), but they are
going away, so I won't include info on them here.

The other thing I can offer is LDM pqact.conf entries we use to capture
the AVN grids:

# AVN model output
# Grid #201 N. Hemisphere 381km: ^Y.A... KWBC.*(/mAVN|/mSSIAVN)
# Grid #202 CONUS         190km: ^Y.I... KWBC.*(/mAVN|/mSSIAVN)
# Grid #203 Alaska        190km: ^Y.J... KWBC.*(/mAVN|/mSSIAVN)
# Grid #211 CONUS          80km: ^Y.Q... KWBC.*(/mAVN|/mSSIAVN)
# Grid #213 CONUS          95km: ^Y.H... KWBC.*(/mAVN|/mSSIAVN)
# Select any/all grids desired from [QAIJH]

HRS     ^[YZ].([QAIJH])... KWB. ([0-3][0-9])([0-2][0-9]).*(/mAVN|/mSSIAVN)
        FILE
        data/pub/raw/hrs/model/\1/(\2:yyyy)(\2:mm)\2\3_AVN.wmo

# Global AVN (Spectral) Thinned grids
# Grid octets I-P will be stitched togethir as a single global grid
#
#
HRS     ^H.[I-P]... KWB[^K] ([0-3][0-9])([0-2][0-9])
        FILE
        data/pub/raw/hrs/model/thin/(\1:yyyy)(\1:mm)\1\2_AVN.wmo
#
#Ensemble members
HRS     ^H.[I-P]... KWBK ([0-3][0-9])([0-2][0-9])
        FILE
        data/pub/raw/hrs/model/ensemble/(\1:yyyy)(\1:mm)\1\2_ENS.wmo


(mind the spaces that need to be tabs...)

While I have your attention (:-), can I convince you or someone else at
DRI to upgrade to the latest LDM-6 release?  I sent a note to 
Greg McCurdy <address@hidden> encouraging an upgrade, but I got no
response.

Should you be the contact person for LDM-related matters at DRI?  If
yes, I will update our database.

Cheers,

Tom Yoksas

>From address@hidden Wed Jun  4 17:54:54 2003

Tom,

Thank you very much for the quick response.  It was a helpful reminder
that GFS is really distributed as AVN (the more confusing names from NCEP
the better :))  One of my main concerns is that we can get all of the
model runs (with different grid sizes) out to 384 hours.  So I will digest
your advice and working with Greg see if can begin to extract the info.
Greg McCurdy is still the primary contact (I'm just the novice user).  I
will be happy to past along and encourage your request for the upgrade,
but Greg should remain as DRI's LDM contact.

-Tim