Problems reading BUFR file
Bob Kuligowski
Bob.Kuligowski at NOAA.GOV
Thu Sep 21 09:10:52 EDT 2006
Diane et al.,
That didn't work, but it did get me looking more closely at the time
information. The header information suggests that the Julian day is in
0-04-043, the hour is in 0-04-004, and the minute in 0-04-005. However,
when I dump the full bufrscan output into a file called 'everything.exe'
and do 'grep 0-04-043 everything.exe' to try to extract the Julian day
information, I get all kinds of numbers including values above 365. The
same happens when doing 'grep 0-04-004' to get the hour information;
some of the values are above 23. This tells me that either (a) the BUFR
file is really messed up; or (b) somehow bufrscan isn't able to read it
correctly (which could be related to (a)).
So I'm going to try to contact the source of said file to see what's
going on...thanks for your help!
Cheers,
Bob
> Guess #2:
>
> If your ob times are not exactly 13:00Z01SEP2006, try a time window, eg:
>
> set time 12:30Z01sep2006 13:30z01sep2006
>
> If that doesn't work, hope that someone more knowledgeable chimes in
> soon.
>
> Diane
>
> Bob Kuligowski wrote:
>> Diane,
>>
>> Good catch...though, unfortunately, I still get the same result.
>> Another of those cases where the process of debugging reveals bugs that
>> one wasn't looking for in the first place :-) Thanks!
>>
>> Cheers,
>> Bob
>>> Here's a quick guess...
>>>
>>> You have in your gribscan output:
>>>
>>> 0 05 002 (numeric) CLAT Latitude (coarse accuracy)
>>> 0 06 002 (numeric) CLON Longitude (coarse accuracy)
>>>
>>>
>>> but in your ctl file:
>>>
>>> xvar 6,1
>>> yvar 5,2
>>>
>>>
>>> Try changing that xvar definition in your ctl file to:
>>>
>>> xvar 6,2
>>>
>>>
>>> Diane
>>>
>>>
>>> Bob Kuligowski wrote:
>>>> I am attempting to read and display a BUFR file in GrADS. When I
>>>> run 'bufrscan' the output is the attached 'headers.txt' file. I tried
>>>> to follow the directions in the BUFR entry of
>>>> http://www.iges.org/grads/gadoc/gadocindex.html to produce a GrADS
>>>> control file, which is attached as 'testbufr.ctl'. I can open the
>>>> .ctl
>>>> file in GrADS with no problem, but when I try 'set gxout print'
>>>> followed
>>>> by 'd ' of any of the variables in the .ctl file, I always get
>>>> "Printing
>>>> stations -- 0 Reports -- Undef = -979". My presumption is that the
>>>> variables in the .ctl file are pointing at the wrong X and Y, but I'm
>>>> using the files that I found in headers.txt.
>>>>
>>>> Any thoughts? Thanks in advance...
>>>>
>>>> Cheers,
>>>>
>>>> --
>>>> Bob Kuligowski, Ph.D.
>>>> Meteorologist
>>>> NOAA/NESDIS/Center for Satellite Applications and Research (STAR)
>>>>
>>>> Mailing Address:
>>>> E/RA2 RM 712 WWBG
>>>> 5200 Auth Rd.
>>>> Camp Springs, MD 20746-4304
>>>>
>>>> Phone: (301) 763-8251x192
>>>> Fax: (301) 763-8580
>>>>
>>>> http://www.orbit.nesdis.noaa.gov/smcd/emb/bobk/
>>>>
>>>>
>>>> ------------------------------------------------------------------------
>>>>
>>>>
>>>
>>> < top of gribscan output snipped - dcs >
>>>
>>>> 3 61 118 (sequence)
>>>> 0 04 043 (numeric) JULDAY JULIAN DAY
>>>> 0 04 004 (numeric) HOUR Hour
>>>> 0 04 005 (numeric) MINU Minute
>>>> 0 60 006 (numeric) SCSTTM SCAN START TIME
>>>> 0 60 003 (numeric) SCANUM SCAN NUMBER
>>>> 0 60 004 (numeric) NUMSCEN NUMBER OF SCENES IN SCAN
>>>> 0 05 002 (numeric) CLAT Latitude (coarse accuracy)
>>>> 0 06 002 (numeric) CLON Longitude (coarse accuracy)
>>>> 0 60 005 (numeric) SCENEN SCENE NUMBER
>>>> 0 60 093 (numeric) RF1 Rain Flag 1 (Odd Scan)
>>>> 0 60 094 (numeric) RF2 Rain Flag 2 (Odd Scan)
>>>> 0 60 162 (numeric) RR Rain Rate
>>>> 0 60 090 (numeric) SURFTG SURFACE TAG
>>>> 0 60 163 (numeric) LSURFTY L Surface Type
>>>> 0 60 175 (numeric) SNWDPTH SNOW DEPTH
>>>> 0 60 165 (numeric) LSOILM L Soil Moisture
>>>> 0 60 166 (numeric) LSURFTM L Surface Temp
>>>> 0 60 167 (numeric) ICSNEDG Ice/Snow Edge
>>>> 0 60 168 (numeric) ICONC Ice Concentration
>>>> 0 60 169 (numeric) ICEAGE Ice Age
>>>> 0 60 170 (numeric) OSWSF Ocean Surface Wind Speed Flag
>>>> 0 60 171 (numeric) OWV Ocean Water Vapor
>>>> 0 60 172 (numeric) OSWS Ocean Surface Wind Speed
>>>> 0 60 173 (numeric) OCW Ocean Cloud Water
>>>> 0 60 174 (numeric) OCA Ocean Cloud Amount
>>>> 0 60 164 (numeric) SSWC Surf Snow Water Content
>>>>
>>>
>>> < bulk of gribscan output snipped - dcs >
>>>
>>>>
>>>> ------------------------------------------------------------------------
>>>>
>>>>
>>>> dset ^../Data/NPR.EDEB.SA.D06263.S0549.E0735.B1508081.NS
>>>> title Test BUFR description file
>>>> undef -979
>>>> dtype bufr
>>>> stid 1,198
>>>> xvar 6,1
>>>> yvar 5,2
>>>> tvar yr 4,1 mo 4,2 dy 4,3 hr 4,4 mn 4,5
>>>> stid 1 1
>>>> tdef 1 LINEAR 13:00Z01SEP2006 1hr
>>>> vars 20
>>>> slon 0 6,2 Station longitude
>>>> slat 0 5,2 Station latitude
>>>> scenen 0 60,005 Scene number
>>>> rf1 0 60,093 Rain flag 1
>>>> rf2 0 60,094 Rain flag 2
>>>> rainrate 0 60,162 Rain Rate
>>>> surftg 0 60,090 Surface tag
>>>> lsurty 0 60,163 L Surface type
>>>> snwdpth 0 60,175 Snow depth
>>>> lsoilm 0 60,165 L Soil moisture
>>>> lsurftm 0 60,166 L Surface temp
>>>> icsnedg 0 60,167 Ice/snow edge
>>>> iconc 0 60,168 Ice concentration
>>>> iceage 0 60,169 Ice age
>>>> oswsf 0 60,170 Ocean surface wind speed flag
>>>> owv 0 60,171 Ocean water vapor
>>>> osws 0 60,172 Ocean surface wind speed
>>>> ocw 0 60,173 Ocean cloud water
>>>> oca 0 60,174 Ocean cloud amount
>>>> sswc 0 60,164 Surf cnow water content
>>>> endvars
>>>
>>> --
>>> Diane Stokes
>>> Environmental Modeling Center
>>> National Weather Service/NOAA
>>
>>
>> --
>> Bob Kuligowski, Ph.D.
>> Meteorologist
>> NOAA/NESDIS/Center for Satellite Applications and Research (STAR)
>>
>> Mailing Address:
>> E/RA2 RM 712 WWBG
>> 5200 Auth Rd.
>> Camp Springs, MD 20746-4304
>>
>> Phone: (301) 763-8251x192
>> Fax: (301) 763-8580
>>
>> http://www.orbit.nesdis.noaa.gov/smcd/emb/bobk/
>
> --
> Diane Stokes
> Environmental Modeling Center
> National Weather Service/NOAA
--
Bob Kuligowski, Ph.D.
Meteorologist
NOAA/NESDIS/Center for Satellite Applications and Research (STAR)
Mailing Address:
E/RA2 RM 712 WWBG
5200 Auth Rd.
Camp Springs, MD 20746-4304
Phone: (301) 763-8251x192
Fax: (301) 763-8580
http://www.orbit.nesdis.noaa.gov/smcd/emb/bobk/
More information about the gradsusr
mailing list