[wxqc] findu.com barometric pressure display issue

Thomas Hybiske t_biskit at yahoo.com
Tue Aug 1 07:40:31 EDT 2006


Has anyone checked their wx page recently on findu.com?  I hope I can explain this correctly because I don't know much about the system:  
   
  The problem pertains to the display of the barometric pressure.  Looking at the displayed graph, it would appear there are gross swings in pressure. In my case, my station shows a 5 millibar change in a matter of hours; something that did not happen in the dog days of summer here in New England.  I first suspected a device problem at my station, but my Weatherlink display showed a nearly smooth pressure line as expected.  Then I looked at other stations and observed gross swings in pressure at their stations as well.  So I then went back and looked at my "quality control graph" for my station and I think I've discovered the problem.  It appears that the graph line has been "magnified" and layed down onto an incorrect graph range.  In other words the graph line represents minute changes in pressure, but is being tracked on a grid for a much wider range of pressure.  Maybe a tenth of a millibar is being traced as one millibar. I noticed this began sometime late last week. 
 Can someone confirm this for me?  Here's my station address for reference:  http://www.findu.com/cgi-bin/wxpage.cgi?call=K3gm&last=120
   
  Thanks,
  Tom Hybiske, K3GM

 			
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