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19991020: MRF hour 0 data?

>From: Mark Tucker <address@hidden>
>Organization: Lyndon State
>Keywords: 199910201812.MAA01448 MRF AVN MRF-UW

Mark,

>We were working on some of our scripts and noticed that our MRF data does
>not contain data for the initial time of the model run.  The grid files do
>contain data for the 12 hour forecast and beyond.   Is the initalization 
>data still being sent out over the IDD, and if so, do you have any
>thoughts as to why we are not finding it in the MRF grid files?

The data is being conveyed by the IDD.  I took a quick look at your
system to snoop around as follows:

DATALOC ADD RTGRIDS CIRRUS.LSC.VSC.EDU

Group Name                    Server IP Address
--------------------         ----------------------------------------
RTGRIDS                      CIRRUS.LSC.VSC.EDU

<LOCAL-DATA> indicates that data will be accessed from the local data directory.
DATALOC -- done
DSINFO GRID RTGRIDS

        Dataset Names of Type: GRID  in Group: RTGRIDS

Name         NumPos   Content
------------ ------   --------------------------------------
ALL            400    Real-Time Grids
ECMWF           10    ECMWF Grids
ETA             40    ETA Grids
MISC            10    Miscellaneous Grids
MRF            100    MRF Grids
MRF-UW           2    MRF Grids in UW stream
NGM             40    NGM Grids
NGM-UW           2    NGM Grids in UW stream
RUC             80    RUC Grids

DSINFO -- done

GRDLIST RTGRIDS/MRF.54 NUM=ALL
Dataset position 54     Directory Title= ALL  12Z MRF 0  HR<=VT<=24 HR
PAR    LEVEL       DAY        TIME    SRC FHOUR     FDAY       FTIME  GRID  PRO
---- --------- ------------ -------- ---- ----- ------------ -------- ----- ----
T     850 MB   21 OCT 99294 12:00:00  MRF    12 22 OCT 99295 00:00:00     1 MERC
 ...
T     850 MB   21 OCT 99294 12:00:00  MRF    18 22 OCT 99295 06:00:00    36 MERC
 ...
T     850 MB   21 OCT 99294 12:00:00  MRF    24 22 OCT 99295 12:00:00    71 MERC
 ...
T       2 M    21 OCT 99294 12:00:00  MRF    12 22 OCT 99295 00:00:00   106 MERC
 ...
T       2 M    21 OCT 99294 12:00:00  MRF    18 22 OCT 99295 06:00:00   145 MERC
 ...
T       2 M    21 OCT 99294 12:00:00  MRF    24 22 OCT 99295 12:00:00   153 MERC
T    1000 MB   21 OCT 99294 12:00:00  MRF    24 22 OCT 99295 12:00:00   154 MERC
PCP  SFC       21 OCT 99294 12:00:00  MRF    18 22 OCT 99295 06:00:00   155 MERC
CPCP SFC       21 OCT 99294 12:00:00  MRF    18 22 OCT 99295 06:00:00   156 MERC
 ...
U      10 M    21 OCT 99294 12:00:00  MRF    24 22 OCT 99295 12:00:00   163 MERC
 ...
Z     250 MB   21 OCT 99294 12:00:00  MRF    18 22 OCT 99295 06:00:00   173 MERC
Z     200 MB   21 OCT 99294 12:00:00  MRF    18 22 OCT 99295 06:00:00   174 MERC
Z     100 MB   21 OCT 99294 12:00:00  MRF    24 22 OCT 99295 12:00:00   175 MERC
 ...
Z     150 MB   21 OCT 99294 12:00:00  MRF    18 22 OCT 99295 06:00:00   179 MERC
Z     100 MB   21 OCT 99294 12:00:00  MRF    18 22 OCT 99295 06:00:00   180 MERC
RH      2 M    21 OCT 99294 12:00:00  MRF    18 22 OCT 99295 06:00:00   181 MERC
 ...
RH    500 MB   21 OCT 99294 12:00:00  MRF    24 22 OCT 99295 12:00:00   222 MERC
T     850 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   223 MERC
T     700 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   224 MERC
T     500 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   225 MERC
T     400 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   226 MERC
T     300 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   227 MERC
T     250 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   228 MERC
T     200 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   229 MERC
T     150 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   230 MERC
T     100 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   231 MERC
T    TRO       21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   232 MERC
T    MAXW      21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   233 MERC
U     700 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   234 MERC
U     850 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   235 MERC
U     500 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   236 MERC
U     400 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   237 MERC
U     300 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   238 MERC
U     250 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   239 MERC
U     200 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   240 MERC
U     150 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   241 MERC
U     100 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   242 MERC
U    TRO       21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   243 MERC
U    MAXW      21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   244 MERC
V     850 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   245 MERC
V     700 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   246 MERC
V     500 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   247 MERC
V     400 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   248 MERC
V     300 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   249 MERC
V     250 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   250 MERC
V     200 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   251 MERC
V     150 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   252 MERC
V     100 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   253 MERC
V    TRO       21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   254 MERC
V    MAXW      21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   255 MERC
Z    TRO       21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   256 MERC
Z    MAXW      21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   257 MERC
T       2 M    21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   258 MERC
T    1000 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   259 MERC
U      10 M    21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   260 MERC
U    1000 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   261 MERC
V      10 M    21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   262 MERC
V    1000 MB   21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   263 MERC
P    SFC       21 OCT 99294 12:00:00  MRF     0 21 OCT 99294 12:00:00   264 MERC
Number of grids listed = 264
GRDLIST - done

This listing tells me that you did get the 0 hour initialization data
for the 12 Z run of the MRF.  By the way, this run is the AVN run.  The
MRF stuff begins at H+84.

If we are talking about McIDAS scripts, I am guessing that your script
is trying to use the RTGRIDS/MRF-UW dataset instead of the  RGGRIDS/MRF
dataset.  The GRID file that contained the 0 hour MRF, one that we
labled as the RTGRIDS/MRF-UW dataset, used to be broadcast in the
Unidata-Wisconsin datastream.  This and all other non-image products
were discontinued from the UW stream on July 1 of this year.

Again, if we are talking McIDAS, I can help you to recreate the GRID
files that would populate the RTGRIDS/MRF-UW dataset, or you can write
your script to use the RTGRIDS/MRF dataset.

Please let me know if this question really did relate to McIDAS.  If it
did, I will need to advise you how to modify your DMGRID configuration
so that the AVN run of the MRF is put into its own separate set of GRID
files.  Part of the change is the addition of the RTGRIDS/AVN dataset.
I included in 7.6 called UWGRID that can be used to create the
equivalent of the MRF product from the UW stream from 0 hour AVN
grids.  It can also be used to recreate the NGM grid file that was in
the UW stream.  We can talk more about this if your question is realted
to McIDAS.

>Thanks.

Talk to you later...

Tom