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19990728: ua2nc (fwd)

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Don,

I made the change.

Robb...

==============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
rkambic@xxxxxxxxxxxxxxxx                   WWW: http://www.unidata.ucar.edu/
==============================================================================

---------- Forwarded message ----------
Date: Thu, 29 Jul 1999 11:56:01 -0600
From: Don Murray <dmurray@xxxxxxxxxxxxxxxx>
To: rkambic@xxxxxxxxxxxxxxxx
Subject: 19990728: ua2nc


Robb-

I think the problem in ua2nc is the following (in ttaa sub):

       } elsif( $pres[ $j ] == 250 && $ht[ $j ] < 1000 ) { # 250 mb
                       $ht[ $j ] = "1" . $ht[ $j ] ;

At this point, you've already added a 0 to the end of $ht, so the
value from a report like:

TTAA  78061 47122 99992 24407 17006 00518 ///// ///// 92658
21409 18522 85390 18213 19530 70038 10817 20521 50579 02343
22019 40754 10557 21016 30969 24157 21016 25100 33957 24507
20252 46758 25005 15437 61157 26515 10683 71156 ///// 88999
77999

where the 250 mb value is:

25100,

$ht should be 1000, which would be a height of 11000 so you
need to add the one.  Typical values of 250 mb heights are
around 9800-10800 but in this case it is 11000. I think if you change the code to be: 

       } elsif( $pres[ $j ] == 250 && $ht[ $j ] < 5000 ) { # 250 mb
                       $ht[ $j ] = "1" . $ht[ $j ] ;


you would be okay.  There shouldn't be 250 mb heights below 5000
or above 15000.
Let me know what you think. 
Don
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(303) 497-8628                              Boulder, CO 80307
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