ECMWF ensemble forecasts problems: perhaps tdef?

Martynas mkzv at YAHOO.COM
Thu Nov 24 09:07:47 EST 2005 

Hi,

I've got some grib files containing ECMWF monthly forecasts. Each file
contains 9 members and 6 forecast means (e.g. for forecast started on 1 Feb,
the forecasts means are for Feb, Mar, Apr, May, Jun, Jul).
Grib2ctl script seems to generate a .ctl file which doesn't work properly.

My original ctl file looks like:

dtype grib 255
options yrev
ydef 8 linear 49.500000 1.5
xdef 12 linear 16.500000 1.500000
eas_mm_GEO_500hPa_19900201_cnrm
index ^seas_mm_GEO_500hPa_19900201_cnrm.idx
undef 9.999E+20
title seas_mm_GEO_500hPa_19900201_cnrm
*  produced by grib2ctl v0.9.12.5p33k
dtype grib 255
options yrev
ydef 8 linear 49.500000 1.5
xdef 12 linear 16.500000 1.500000
tdef 1 linear 00Z01jan1990 1mo
*********(i got some results with tdef 6 linear 00Z01jan1990 720hr and etc.)
zdef 1 linear 1 1
vars 1
MSLMAprs  0 129,100,500  ** Mean sea level pressure (MAPS) [Pa]
ENDVARS
def 1 linear 00Z01jan1990 1mo
zdef 1 linear 1 1
vars 1
MSLMAprs  0 129,100,500  ** Mean sea level pressure (MAPS) [Pa]
ENDVARS


To my mind, the problem is the tdef line: There are 9 ensemble variables in
the file, containing 6 forecast means;

I'm not able to plot them unless i change 1mo to 720hr-but gribmap doesn't
make all matches for the .idx file (several months are of 744hr and i'm not
able to plot them)

If i make tdef 6 linear 00Z01jan1990 1mo, i get "time out of bounds" and no
solution;

I've tried to slice the original grib file "to pieces containing" only
several records from the original file and the result was the same problem -
even if 2 forecast means are there in the grib file, "1mo" gives "time out
of bounds" and the time steb "720hr" works and i was able to plot smth.

But not with the original file. Perhaps the timestep is inncorect? Number of
timesteps?

I would be glad to get any sugestions on that (hope that the problem is
described clear enough).

Martynas



Here's my wgrib output:

*****************Wgrib output***********************

Undefined parameter table (center 98-231 table 190), using NCEP-opn
1:0:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=0:P2=24:TimeU=1:500
mb:24hr fcst:ECMWF stream?:NAve=0
2:360:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=0:P2=24:TimeU=1:500
mb:24hr fcst:ECMWF stream?:NAve=0
3:720:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=0:P2=24:TimeU=1:500
mb:24hr fcst:ECMWF stream?:NAve=0
4:1080:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=0:P2=24:TimeU=1:500
mb:24hr fcst:ECMWF stream?:NAve=0
5:1440:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=0:P2=24:TimeU=1:500
mb:24hr fcst:ECMWF stream?:NAve=0
6:1800:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=0:P2=24:TimeU=1:500
mb:24hr fcst:ECMWF stream?:NAve=0
7:2160:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=0:P2=24:TimeU=1:500
mb:24hr fcst:ECMWF stream?:NAve=0
8:2520:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=0:P2=24:TimeU=1:500
mb:24hr fcst:ECMWF stream?:NAve=0
9:2880:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=0:P2=24:TimeU=1:500
mb:24hr fcst:ECMWF stream?:NAve=0
10:3240:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=2:P2=184:TimeU=1:500
mb:696hr fcst:ECMWF stream?:NAve=0
11:3600:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=2:P2=184:TimeU=1:500
mb:696hr fcst:ECMWF stream?:NAve=0
12:3960:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=2:P2=184:TimeU=1:500
mb:696hr fcst:ECMWF stream?:NAve=0
13:4320:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=2:P2=184:TimeU=1:500
mb:696hr fcst:ECMWF stream?:NAve=0
14:4680:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=2:P2=184:TimeU=1:500
mb:696hr fcst:ECMWF stream?:NAve=0
15:5040:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=2:P2=184:TimeU=1:500
mb:696hr fcst:ECMWF stream?:NAve=0
16:5400:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=2:P2=184:TimeU=1:500
mb:696hr fcst:ECMWF stream?:NAve=0
17:5760:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=2:P2=184:TimeU=1:500
mb:696hr fcst:ECMWF stream?:NAve=0
18:6120:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=2:P2=184:TimeU=1:500
mb:696hr fcst:ECMWF stream?:NAve=0
19:6480:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=5:P2=160:TimeU=1:500
mb:1440hr fcst:ECMWF stream?:NAve=0
20:6840:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=5:P2=160:TimeU=1:500
mb:1440hr fcst:ECMWF stream?:NAve=0
21:7200:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=5:P2=160:TimeU=1:500
mb:1440hr fcst:ECMWF stream?:NAve=0
22:7560:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=5:P2=160:TimeU=1:500
mb:1440hr fcst:ECMWF stream?:NAve=0
23:7920:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=5:P2=160:TimeU=1:500
mb:1440hr fcst:ECMWF stream?:NAve=0
24:8280:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=5:P2=160:TimeU=1:500
mb:1440hr fcst:ECMWF stream?:NAve=0
25:8640:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=5:P2=160:TimeU=1:500
mb:1440hr fcst:ECMWF stream?:NAve=0
26:9000:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=5:P2=160:TimeU=1:500
mb:1440hr fcst:ECMWF stream?:NAve=0
27:9360:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=5:P2=160:TimeU=1:500
mb:1440hr fcst:ECMWF stream?:NAve=0
28:9720:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=8:P2=112:TimeU=1:500
mb:2160hr fcst:ECMWF stream?:NAve=0
29:10080:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=8:P2=112:TimeU=1:500
mb:2160hr fcst:ECMWF stream?:NAve=0
30:10440:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=8:P2=112:TimeU=1:500
mb:2160hr fcst:ECMWF stream?:NAve=0
31:10800:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=8:P2=112:TimeU=1:500
mb:2160hr fcst:ECMWF stream?:NAve=0
32:11160:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=8:P2=112:TimeU=1:500
mb:2160hr fcst:ECMWF stream?:NAve=0
33:11520:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=8:P2=112:TimeU=1:500
mb:2160hr fcst:ECMWF stream?:NAve=0
34:11880:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=8:P2=112:TimeU=1:500
mb:2160hr fcst:ECMWF stream?:NAve=0
35:12240:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=8:P2=112:TimeU=1:500
mb:2160hr fcst:ECMWF stream?:NAve=0
36:12600:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=8:P2=112:TimeU=1:500
mb:2160hr fcst:ECMWF stream?:NAve=0
37:12960:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=11:P2=88:TimeU=1:500
mb:2904hr fcst:ECMWF stream?:NAve=0
38:13320:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=11:P2=88:TimeU=1:500
mb:2904hr fcst:ECMWF stream?:NAve=0
39:13680:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=11:P2=88:TimeU=1:500
mb:2904hr fcst:ECMWF stream?:NAve=0
40:14040:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=11:P2=88:TimeU=1:500
mb:2904hr fcst:ECMWF stream?:NAve=0
41:14400:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=11:P2=88:TimeU=1:500
mb:2904hr fcst:ECMWF stream?:NAve=0
42:14760:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=11:P2=88:TimeU=1:500
mb:2904hr fcst:ECMWF stream?:NAve=0
43:15120:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=11:P2=88:TimeU=1:500
mb:2904hr fcst:ECMWF stream?:NAve=0
44:15480:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=11:P2=88:TimeU=1:500
mb:2904hr fcst:ECMWF stream?:NAve=0
45:15840:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=11:P2=88:TimeU=1:500
mb:2904hr fcst:ECMWF stream?:NAve=0
46:16200:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=14:P2=40:TimeU=1:500
mb:3624hr fcst:ECMWF stream?:NAve=0
47:16560:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=14:P2=40:TimeU=1:500
mb:3624hr fcst:ECMWF stream?:NAve=0
48:16920:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=14:P2=40:TimeU=1:500
mb:3624hr fcst:ECMWF stream?:NAve=0
49:17280:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=14:P2=40:TimeU=1:500
mb:3624hr fcst:ECMWF stream?:NAve=0
50:17640:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=14:P2=40:TimeU=1:500
mb:3624hr fcst:ECMWF stream?:NAve=0
51:18000:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=14:P2=40:TimeU=1:500
mb:3624hr fcst:ECMWF stream?:NAve=0
52:18360:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=14:P2=40:TimeU=1:500
mb:3624hr fcst:ECMWF stream?:NAve=0
53:18720:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=14:P2=40:TimeU=1:500
mb:3624hr fcst:ECMWF stream?:NAve=0
54:19080:d=90020100:MSLMA:kpds5=129:kpds6=100:kpds7=500:TR=10:P1=14:P2=40:TimeU=1:500
mb:3624hr fcst:ECMWF stream?:NAve=0

***************************************************************************

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