Topic: Ambient Weather Station / Weather Underground Problem

[MacAdemic]

Hi All-

I have recently set up a brand new Ambient Weather WS-1001 WIFI Observer solar powered remote weather station, in conjunction with an AmbientCAM HD Outdoor WIFI weather cam.  All equipment is working fine, and data is uploading to Weather Underground as expected.  However, as of a couple of days ago, I've noticed that some of the data being uploaded to WU appears more "jagged" on their graphs, where it once appeared much smoother (curvier).  I've noticed this more with the barometric pressure than any of the other readings...but it does seem to happen with them all.  Are the sensors in the unit going bad already (have only had it a couple of weeks), or is there something else in play here?  Here's the link to my ws:

<a href="http://www.wunderground.com/weatherstation/WXDailyHistory.asp?ID=KVABRIST23"><img src="http://banners.wunderground.com/cgi-bin/banner/ban/wxBanner?bannertype=wxstnsticker&weatherstationcount=KVABRIST23" height="160" width="160" border="0" alt="Weather Underground PWS KVABRIST23" /></a> 

[Beaudog]

Look at the changes for barometer   .01   for each jag.   That ain't very much.   

[nincehelser]

One thing that bugs me is the way wunderground auto-scales the vertical axis.  Sometimes it makes small fluctuations look big. 

I'd prefer they keep the vertical scale consistent. 

[Pooley]

You think that is jagged - have a look at my humidity readings - http://www.wxforum.net/index.php?topic=25829.msg249984#msg249984

[ggsteve]

As referenced above, if the changes in pressure, temp, etc. are very small,the graph will look choppier.  Wait for a nice 40 degree temp increase on a hot day and you'll see a nice curve.  I like the autoscaling of the axis on WU.  On my CWOP graphs it can be hard to see anything in the data.