[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
20011211: Differences in Eta 212/215 grid data
- Subject: 20011211: Differences in Eta 212/215 grid data
- Date: Wed, 12 Dec 2001 15:36:42 -0700
Daryl,
There are 2 sources for the precipitation on the 212 grid. The ETA model
identified
as number 84, and the EAT model identified as number 89. The ICWF project run by
the techniques development lab (TDL) within NOAA produces the QPF grids for
precipitation forecasts identified as model #89. The NOAAPORT 215 grid has only
the precipitation grids identified as model 84, though the CONDUIT stream does
have the icwf on the 20km grid as well.
Here is the reception information on these grids:
Dec 11 15:03:00 grib/ncep/ETA_84/#212/200112111200/F048/APCP/sfc/ YERI98 KWBE
111200
Dec 11 16:13:35 grib/ncep/ETA_89/#212/200112111200/F048/APCP/sfc/ YERI98 KWBD
111200 PAA
Dec 11 15:03:57 grib/ncep/ETA_84/#215/200112111200/F048/APCP/sfc/ YEUI98 KWBE
111200
The ETA model identified as ETA_89 uses the WMO identifying center of KWBD,
while the ETA_84 uses KWBE. The ETA212 field you see with the much grater
forecast amount is the latter that came in which is the icwf prediction.
Previously, the 89 model id as the 0 & 12Z run, while the 85 run was the 6 & 18Z
run previously called "meso eta". Now, all 4 runs use the identical model 84...
but the TDL lab is creating QPF grids (thats a big push in areas that need
improvement in NWS). I found a somewhat old web page describing ICWF and ETA at:
http://www.emc.ncep.noaa.gov/mmb/research/FAQ-eta.html#POST12
The ICWF grids do have some useful prob of precip grids- but I can see that we
should separate the 2 sources to avoid confusion.
You are using dcgrib2 in your file actions below. You could make the pattern
specific to KWBE to eliminate the icwf grids (KWBD). Or, you can make dcgrib2
create a separate gempak grid file for the icwf grids.
The GEMPAK file $GEMTBL/grid/gribkey.tbl file determines the output file name
for dcgrib2. At present, there is a single output file for both model 84 and 89
for for the various grids (which I tried to have for backwards compatibility
with all three model numbers 84, 85 and 89).
I've attatched a replacement gribkey.tbl which will store the ETA_84 products
in the same YYYYMMDDHH_eta@@@.gem files, while storing the ETA_89 products in
files named YYYYMMDDHH_icwf@@@.gem. I will use this segregated file naming
gribkey.tbl file in new releases of GEMPAK as well.
Steve Chiswell
Unidata User SUpport
>
>
> >From: Daryl Herzmann <address@hidden>
> >Organization: UCAR/Unidata
> >Keywords: 200112112255.fBBMthN15530
>
> >Hello,
> > Dr William Gallus, here at ISU, noticed something peculiar. The
> >forecasted magnitude of precip from this mornings 12Z Eta run is vasty
> >different between the 212 grid and the 215 grid. I have no idea how to
> >explain this.
> >
> > I used gdlist to look at the two grid files
> >with params
> > GDATTIM = F48
> > GLEVEL = 0
> > GVCORD = NONE
> > GFUNC = P06I
> > GDFILE = 2001121112_eta212.gem
> > GAREA = IA
> > PROJ = MER
> > SCALE = 0
> > OUTPUT = T
> >
> >The max value for this subset is 1.58 inches
> >
> >then I change
> > GDFILE = 2001121112_eta215.gem
> >
> >The max value for this subset is 0.47 inches
> >
> >Here is my LDM pqact.conf entries
> >
> ># Process 215 ETA
> >HRS ^[YZ].U.*/mETA
> > PIPE dcgrib2 -d data/gempak/logs/dcgrib.log
> > -e GEMTBL=/home/nawips/nawips/gempak/tables
> >
> ># Process 212 ETA
> >HRS ^[YZ].R.*/mETA
> > PIPE dcgrib2 -d data/gempak/logs/dcgrib.log
> > -e GEMTBL=/home/nawips/nawips/gempak/tables
> >
> >
> >Ideas??
> >
> >Thanks,
> > Daryl
> >
> >
> >--
> >/**
> > * Daryl Herzmann (address@hidden)
> > * Program Assistant -- Iowa Environmental Mesonet
> > * http://mesonet.agron.iastate.edu
> > */
> >
> >
> >
>
>
!center sub modelid grid Output grid file name max_grids
!
! ETA
007 x 084,85 212 data/gempak/model/YYYYMMDDHH_eta@@@.gem 18000
007 x 089 212 data/gempak/model/YYYYMMDDHH_icwf@@@.gem 2000
007 x 084,85,89 216 data/gempak/model/YYYYMMDDHH_eta@@@.gem 6000
007 x 084,85,89 104 data/gempak/model/YYYYMMDDHH_eta@@@.gem 12000
007 x 084,85 @@@ data/gempak/model/YYYYMMDDHH_eta@@@.gem 2000
007 x 089 @@@ data/gempak/model/YYYYMMDDHH_icwf@@@.gem 2000
!
! NGM
007 x 039 @@@ data/gempak/model/YYYYMMDDHH_ngm@@@.gem 2000
!
! RUC
007 x 105 @@@ data/gempak/model/YYYYMMDDHH_ruc@@@.gem 7500
007 x 086 @@@ data/gempak/model/YYYYMMDDHH_ruc@@@.gem 2000
!
! AVN grids
007 x 077,81,96 037 data/gempak/model/YYYYMMDDHH_thin.gem 2000
007 x 077,81,96 038 data/gempak/model/YYYYMMDDHH_thin.gem 2000
007 x 077,81,96 039 data/gempak/model/YYYYMMDDHH_thin.gem 2000
007 x 077,81,96 040 data/gempak/model/YYYYMMDDHH_thin.gem 2000
007 x 077,81,96 041 data/gempak/model/YYYYMMDDHH_thin.gem 2000
007 x 077,81,96 042 data/gempak/model/YYYYMMDDHH_thin.gem 2000
007 x 077,81,96 043 data/gempak/model/YYYYMMDDHH_thin.gem 2000
007 x 077,81,96 044 data/gempak/model/YYYYMMDDHH_thin.gem 2000
007 x 077,81,96 002 data/gempak/model/YYYYMMDDHH_avn@@@.gem 9000
007 x 077,81,96 003 data/gempak/model/YYYYMMDDHH_avn@@@.gem 12000
007 x 077,81,96 @@@ data/gempak/model/YYYYMMDDHH_avn@@@.gem 2000
!
! MRF
007 x 078,80,94 025 data/gempak/model/YYYYMMDDHH_mrf.gem 1500
007 x 078,80,94 026 data/gempak/model/YYYYMMDDHH_mrf.gem 1500
007 2 078,80,82,94 @@@ data/gempak/model/YYYYMMDDHH_ens@@@.gem 20000
007 x 078,80,82,94 002 data/gempak/model/YYYYMMDDHH_mrf@@@.gem 6000
007 x 078,80,82,94 003 data/gempak/model/YYYYMMDDHH_mrf@@@.gem 5000
007 x 078,80,82,94 @@@ data/gempak/model/YYYYMMDDHH_mrf@@@.gem 1500
!
! OCEAN
007 x 044 @@@ data/gempak/model/YYYYMMDDHH_ocn.gem 500
007 x 010 @@@ data/gempak/model/YYYYMMDDHH_wave@@@.gem 500
007 x 121 @@@ data/gempak/model/YYYYMMDDHH_wave@@@.gem 500
007 x 122 @@@ data/gempak/model/YYYYMMDDHH_wave@@@.gem 500
!
! ICE
007 x 120 @@@ data/gempak/model/YYYYMMDDHH_ice@@@.gem 200
!
! UKMET Thinned grids
074 x 15,44,45 037 data/gempak/model/YYYYMMDDHH_ukmet.gem 1500
074 x 15,44,45 038 data/gempak/model/YYYYMMDDHH_ukmet.gem 1500
074 x 15,44,45 039 data/gempak/model/YYYYMMDDHH_ukmet.gem 1500
074 x 15,44,45 040 data/gempak/model/YYYYMMDDHH_ukmet.gem 1500
074 x 15,44,45 041 data/gempak/model/YYYYMMDDHH_ukmet.gem 1500
074 x 15,44,45 042 data/gempak/model/YYYYMMDDHH_ukmet.gem 1500
074 x 15,44,45 043 data/gempak/model/YYYYMMDDHH_ukmet.gem 1500
074 x 15,44,45 044 data/gempak/model/YYYYMMDDHH_ukmet.gem 1500
!
! UKMET Other
074 x 015 @@@ data/gempak/model/YYYYMMDDHH_egrr@@@.gem 1000
!
! ECMWF
! ECMWF changes their model id so often, best to match any modelid from
! center #98.
098 x ??? 001 data/gempak/model/YYYYMMDDHH_ecmf1.gem 1500
098 x ??? 002 data/gempak/model/YYYYMMDDHH_ecmf1.gem 1500
098 x ??? 003 data/gempak/model/YYYYMMDDHH_ecmf1.gem 1500
098 x ??? 004 data/gempak/model/YYYYMMDDHH_ecmf1.gem 1500
098 x ??? 009 data/gempak/model/YYYYMMDDHH_ecmf1.gem 1500
098 x ??? 010 data/gempak/model/YYYYMMDDHH_ecmf1.gem 1500
098 x ??? 011 data/gempak/model/YYYYMMDDHH_ecmf1.gem 1500
098 x ??? 012 data/gempak/model/YYYYMMDDHH_ecmf1.gem 1500
098 x ??? 005 data/gempak/model/YYYYMMDDHH_ecmf2.gem 1500
098 x ??? 006 data/gempak/model/YYYYMMDDHH_ecmf2.gem 1500
098 x ??? 007 data/gempak/model/YYYYMMDDHH_ecmf2.gem 1500
098 x ??? 008 data/gempak/model/YYYYMMDDHH_ecmf2.gem 1500
098 x ??? @@@ data/gempak/model/YYYYMMDDHH_ecmwf@@@.gem 100
!
! FSL RUC
059 x 105 @@@ data/gempak/model/YYYYMMDDHH_ruc@@@.gem 7500
!
! FNOC NOGAPS/COAMPS
058 x 041,58 @@@ data/gempak/model/YYYYMMDDHH_nogaps@@@.gem 5000
058 x 082 020 data/gempak/model/YYYYMMDDHH_coamps_conus 1500
058 x 027 186 data/gempak/model/YYYYMMDDHH_coamps_centam 1500
058 x 063 187 data/gempak/model/YYYYMMDDHH_coamps_watl 1500
058 x 060 188 data/gempak/model/YYYYMMDDHH_coamps_epac 1500
058 x ??? @@@ data/gempak/model/YYYYMMDDHH_coamps###_@@@ 1500
!
! RADAR Mosaic
008 x 000 @@@ data/gempak/model/YYYYMMDD_radar.gem 100
!
! Canadian Meteorological Service
054 x 036 @@@ data/gempak/model/YYYYMMDDHH_cmcreg.gem 1000
!
! River products
009 150 180 @@@ data/gempak/model/qpf/YYYYMMDDHH_ktua@@@.gem
500
009 154 180 @@@ data/gempak/model/qpf/YYYYMMDDHH_korn@@@.gem
500
009 155 180 @@@ data/gempak/model/qpf/YYYYMMDDHH_krha@@@.gem
500
009 156 180 @@@ data/gempak/model/qpf/YYYYMMDDHH_kkrf@@@.gem
500
009 157 180 @@@ data/gempak/model/qpf/YYYYMMDDHH_kmsr@@@.gem
500
009 158 180 @@@ data/gempak/model/qpf/YYYYMMDDHH_ktar@@@.gem
500
009 160 180 @@@ data/gempak/model/qpf/YYYYMMDDHH_ktir@@@.gem
500
009 161 180 @@@ data/gempak/model/qpf/YYYYMMDDHH_kalr@@@.gem
500
009 162 180 @@@ data/gempak/model/qpf/YYYYMMDDHH_kfwr@@@.gem
500
009 x 180 @@@ data/gempak/model/qpf/YYYYMMDDHH_%%%_###_@@@.gem
500
009 x 185 @@@ data/gempak/model/nohrsc/YYYYMMDDHH_kmsr@@@.gem
500
!
007 5 181 218 data/gempak/model/qpf/YYYYMMDDHH_qpe.gem 500
!
! Unidata RADAR mosaic
060 1 1 @@@ YYYYMMDDHHNN_nexr.gem 500
060 1 2 @@@ YYYYMMDDHHNN_nexr.gem 500