[Met_help] Fwd: pcp-combine

[John Halley Gotway]

Tressa (and Jeff),

I have seen that type of error before.  It usually means there some weirdness in the GRIB files being used.  In the Product Description Section (PDS) of each GRIB record, there is a header value that
tells you how to interpret the time information in the file.  That value is called the "Time Range Indicator".  Here's a table that describes the options:
http://www.nco.ncep.noaa.gov/pmb/docs/on388/table5.html

When summing data up in PCP-Combine, we expect that the time range indicator will be set to 4 (meaning an accumulation time) for precipitation.  For some reason, it's not set to a value of 4.  And
this really may just be a symptom of larger problems reading this particular type of GRIB file.

It'd probably be easiest to just have Jeff send us a few sample GRIB files from this dataset.  I could run them through MET using the debugger and try to really diagnose the problem.  It would be
helpful to know where the data is from and how the GRIB files were created.

Thanks,
John

Tressa Fowler wrote:
> John,
> 
> Any help for Jeff? This looks to me like it should work. I even tried it
> on pigpen, and my error was just that I don't have these input files.
> 
> Tressa
> 
> Begin forwarded message:
> 
>> From: "Hamilton, Jeffrey A CIV USAF AFWA 16 WS/WXN"
>> <Jeffrey.Hamilton at offutt.af.mil>
>> Date: February 19, 2010 3:04:04 PM MST
>> To: "Tressa Fowler" <tressa at ucar.edu>
>> Subject: pcp-combine
>>
>> Hi Tressa,
>>
>> Hope you enjoyed your trip out here yesterday, Omaha is so enticing
>> this time of year isn’t it? J Anyway, I have a MET issue about the
>> PCP-combine tool that I wanted to run by you. I am trying to sum two 3
>> hour obs accumulated precip grib files with the following code line:
>>
>> /METv2.0/bin/pcp_combine -sum 00000000_000000 3 20100215_180000 6 
>> /METv2.0/out/pcp_combine/LIS_2010021518_06 –pcpdir \ /METv2.0/data/LIS/
>>
>> And I am coming up with an error:
>>
>> ERROR: check_file_time() -> time range indicator of
>>  not currently supported.  Time range indicator must be accumulation
>> (Grib Code 4)
>>
>> I have tried changing the various times in my command line
>> (highlighted above), however, I keep coming up with this. I’m
>> wondering if I am not changing the right thing or if my code is
>> incorrect? Any suggestions?
>>
>> Thanks,
>>
>> // SIGNED //
>> JEFF HAMILTON, Civ SCEP
>> Model Analysis Team
>> 16 WS/ WXN
>> Air Force Weather Agency
>> Offutt AFB, NE 68113
>> (402) 232-7207
>>
> 
> 
> 
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