[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[GEMPAK #UJV-485868]: snlist/sndslist data ordering

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: [GEMPAK #UJV-485868]: snlist/sndslist data ordering
  • Date: Tue, 17 Jun 2014 13:53:44 -0600
Hi Kelton,

I see this with some stations, it doesn't look good to output out of order like 
that, but from looking at snlist source code I don't see any easy fix.  
However, I did notice that the mandatory pressure levels being reported showed 
-9999 (missing) TMPF:

 SNPARM = PRES;TMPF                                                             

 STID = DNR           STNM =    72469    TIME = 140617/1200         
 SLAT =  39.77     SLON =  -104.87   SELV =  1625.0
 STIM =  1200


      PRES     TMPF
    832.00    52.52
   1000.00 -9999.00
    925.00 -9999.00
    850.00 -9999.00
    831.00    53.60
    830.00    55.40

I changed to "SNPARM = tmpf>-9999" and now:

      PRES     TMPF
    832.00    52.52
    831.00    53.60
    830.00    55.40
    827.00    61.52
    820.00    65.48

Hopefully this helps...

-Michael




> I have a question regarding the merging of data (MRGDAT=YES) in the snlist 
> program.
> 
> I am attempting to create text files for soundings coming in through LDM and 
> are already decoded into .gem format. When I choose to merge the data, 
> however, it displays the surface first, followed by the 1000mb level. This is 
> fine if the surface pressure > 1000. mb, but that is not the case for many 
> sounding locations. Is there a way to a) specify to snlist to order the data 
> by descending pressure or b) edit a file somewhere and recompile in order to 
> force it to do so?
> 
> Any assistance would be greatly appreciated.
> 
> Kelton Halbert
> Research Assistant
> University of Oklahoma
> Director of Development
> Oklahoma Weather Laboratory
> 
> 

Ticket Details
===================
Ticket ID: UJV-485868
Department: Support GEMPAK
Priority: Normal
Status: Open