Re: 19990920: Another problem with the ua2nc decoder

• To: Don Murray <dmurray@xxxxxxxxxxxxxxxx>
• Subject: Re: 19990920: Another problem with the ua2nc decoder
• From: Robb Kambic <rkambic@xxxxxxxxxxxxxxxx>
• Date: Wed, 22 Sep 1999 11:29:18 -0600 (MDT)

Don,

I made the fix and then installed it on shemp.  After reading the text,
it's possible that adding 500 would put the height out of the 500-600
range if it was really 125 meters below sea level. Maybe I missing
something.  The code now looks like:

       } elsif( $pres[ $j ] == 1000 && $ht[ $j ] > 500 && $ht[ $j ] < 600
) {
                       $ht[ $j ] -= 500 ;

Your example comes out correctly now.

Robb...




On Mon, 20 Sep 1999, Don Murray wrote:

Hi Robb-

Yes, it's everybody's favorite time - find that bug!

Steve found a bug in ua2nc.  There is a station in Germany
which has the following report:

USDL40 EDZW 200300
TTAA 20021 10868 99943 15050 09503 00528 ///// ///// 92644
18861 14509 85374 18867 18514 70006 07262 16007 50567 08956
21020 40737 20957 21514 30942 38350 21518 25065 48959 22025
20207 60158 23023 15383 65961 23011 10637 57981 25006 88164
67160 23016 77999

The 1000 mb height actually ends up being below sea level (-28 m).
Heights below sea level are reported by adding 500 to the absolute
value of the number, in this case it comes out as 528 (00528 group).
ua2nc decodes this as 528 m.  So, some code needs to be added to

check for this.

Thanks.

Don
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Don Murray                               UCAR Unidata Program
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(303) 497-8628                              Boulder, CO 80307
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==============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
rkambic@xxxxxxxxxxxxxxxx                   WWW: http://www.unidata.ucar.edu/
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