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20050328: 218 grids

Art,

The CONDUIT stream does not provide ETA #218. It does provide
surface #215 as awip20, eta #212 as awip3d, eta #216 as awipak
and eta #104 as grbgrd file names.

There are two sources of eta218 in the IDD, The HDS contains a 
set of surface/boundary layer grids in GRIB1 which have been
in NOAAPORT, but are going to be removed by NWS. A much larger set of
eta218 grids is provided in the NWSTG2 channel of NOAAPORT which
is being used to create the NGRID feed. This data is GRIB2, and is
part of the new DVB-S broadcast, so will be part of the IDD feeds.
The NWS is supposed to go operational with the DVB-S fully on April 1.
The GRIB1 grids will be reomved as duplicating information of the larger GRIB2
set in mid April.

I don't know the source of the the grids you were questioning
as CONDUIT. Can you provide details on the file names?

Steve Chiswell
Unidata User Support

>From: "Arthur A. Person" <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200503281924.j2SJOvv2006573

>Hi...
>
>We've noticed since about March 23 that the ETA 218 grids no longer appear 
>on the CONDUIT feed.  We've also noted that they do appear on the 
>experimental NGRID feed which we've been monitoring from 
>idd.unidata.ucar.edu for a couple of weeks.  My question is, were the 218 
>grids removed from CONDUIT intentionally or was that an oversight, and if 
>intentional, are they going to be left on the NGRID feed and can we use 
>that as a permanent way to receive them?  Also, is there any reason not to 
>feed NGRID data through the dcgrib2 decoder along with the other CONDUIT 
>data?
>
>                                       Art.
>
>Arthur A. Person
>Research Assistant, System Administrator
>Penn State Department of Meteorology
>email:  address@hidden, phone:  814-863-1563
>
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