Patrick,
It's not the lack of glue. The helicity is not there. It was removed
during a change to the GFS in May 2012. The full TIN is available at
:http://www.nws.noaa.gov/os/notification/tin12-22gfs_hybridaab.htm but
the part of interest to you is this wording:
1km helicity will be removed from the 0.5, 1 and 2.5 degree pressure
GRIB files.This field was added to these files by mistake during a
previous implementation.
Becky Cosgrove
NCEP Central Ops
On 3/27/2013 9:42 AM, Patrick L. Francis wrote:
Something has changed with conduit GFS =-O
in October 2011, 0-1km helicity was included in the conduit stream and
decoded by gempak.
note gdinfo from 2011:
http://modelweather.com/files/grids/gfs/006_2k11.txt
45 111005/0000F006 1000 0 HGHT HLCY
yet this morning when i went to use the grid it isn't there :'(
note gdinfo from this morning:
http://modelweather.com/files/grids/gfs/006.txt
Has anyone else noticed the same thing, or did I just pick the wrong
day to quit sniffing glue :-)
cheers,
--patrick
