[Met_help] Request for Assistance-UPDATE (UNCLASSIFIED)

Raby, John (Civ, ARL/CISD) john.raby at us.army.mil
Thu Apr 22 13:07:41 MDT 2010

Classification: UNCLASSIFIED
Caveats: NONE

John - 


We solved the problem by processing the PrepBUFR data to include the metar
data (ADPSFC) in addition to the ADPUPA" and "ANYAIR" data mentioned in the
email below. This ensured that there were all 25 files of data present data
provided in the required argument.

We changed the MADIS data collection to remove the metar data and only
receive the mesonet data and added this using the optional data argument

Now the Point-Stat results are produced for all 25 hours (06Z-06Z).

In summary, if the required PrepBUFR data argument contains no data for a
given hour the software ignored the optional MADIS data.

Is this supposed to happen? Why should the lack of data in the PrepBUFR data
(required argument) preclude the ingest all 25 hours of the optional data?

Please call me if we can clarify more for you or let me know if you still
want the data ftp'd to you.



Mr John W. Raby, Meteorologist
U.S. Army Research Laboratory
White Sands Missile Range, NM 88011
(575) 678-2004 DSN 258-2004
FAX (575) 678-1230 DSN 258-1230
Email: john.raby at us.army.mil

Please begin using the email address within this signature 
block for all future correspondence.  The current @arl.army.mil 
address will be decommissioned in upcoming months.

"When you can measure what you are speaking about and express it in numbers,
you know something about it, but when you cannot measure it, when you cannot
express it in number, your knowledge is of a meagre and unsatisfactory
kind". - Lord Kelvin


-----Original Message-----
From: John Halley Gotway [mailto:johnhg at rap.ucar.edu] 
Sent: Thursday, April 22, 2010 8:58 AM
To: Raby, John (Civ, ARL/CISD)
Cc: met_help at ucar.edu
Subject: Re: Request for Assistance


Sure, we'd be happy to help you figure this out.  Would you be able to send
me some sample ASCII MADIS data, a sample forecast file, and the Point-Stat
configuration file you're using?

I'll try running ASCII2NC and Point-Stat here and figure out what's going

You could post this sample data to our ftp site as follows:
ftp ftp.rap.ucar.edu
password="your email address"
cd incoming/irap/met_help/raby_data
put "your data files"

Please let me know when the data is available, and I'll go take a look.


We are attempting to use both PrepBUFR and MADIS observational data in MET
Point_Stat to evaluate WRF performance over Utah for 2 domains, one nested
inside the other.

We process the PrepBUFR data for a 24 hour period (06Z to 06Z) We explicitly
retain only the message strings "ADPUPA" and "ANYAIR" using the PB2NC
configuration file settings in order to collect upper air data (raobs,
aircraft, acars, etc). After running PB2NC, we typically find only 7 hourly
files (12Z, 15Z, 17Z, 19Z, 20Z, 00Z and 01Z) out of 25 possible which
contain data (presumably because the upper air data is not present for every
hour).  These 7 include the 00Z and 12Z raob data for 2 upper air stations
inside the larger of our domains (KSLC and KLKN).

We process the MADIS data to retain only surface mesonet and metar data in
25 hourly text files (Point observation format), then run ASCII2NC to
convert the files to netcdf.

We ran Point-Stat with the PrepBUFR upper air data files specified in the
required argument for the "obs_file" with the MADIS (surface data) specified
as additional NETCDF point observation files using the "-ncfile" argument.

The Point-Stat output contains results for only the hours 12Z, 15Z, 17Z,
19Z, 20Z, 00Z and 01Z.

We then tried running Point-Stat with the MADIS data specified in the
required argument and the PrepBUFR data specified as the optional
(additional observation file) argument, but this gave identical results.

We expect results for all 25 hourly periods since we know that there are
MADIS surface observations for every hour.

Can you assist us in resolving this problem?



Mr John W. Raby, Meteorologist
U.S. Army Research Laboratory
White Sands Missile Range, NM 88011
(575) 678-2004 DSN 258-2004
FAX (575) 678-1230 DSN 258-1230
Email: john.raby at us.army.mil

Classification: UNCLASSIFIED
Caveats: NONE

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