[wxqc] Baraometer quality problems

[Keith Miller]

> -----Original Message-----
> From: wxqc-bounces at lists.gladstonefamily.net
> [mailto:wxqc-bounces at lists.gladstonefamily.net]On Behalf Of Philip
> Gladstone
> Sent: Sunday, March 12, 2006 9:50 PM
> To: spamfree at myrealbox.com; Discussion of weather data quality
issues
> Subject: Re: [wxqc] Baraometer quality problems
>
>
> There is another factor in barometer adjustment. Some
> stations just add/subtract an offset to make the value
> come out right (but also have the elevation set wrong).
> This means that when the pressure changes, the reported
> pressure does not track correctly.
>

When I was calibrating the Baro, I was checking the local
airport reports every hour and adjusting the elevation in
the Envoy. Being on the side of a hill with topo having 10'
contours, plus the Envoy on the second floor, left some
uncertainty about exact elevation.

Looking at QC now, it looks like I'm tracking the local
airport pretty well (which is at near the same elevation).

Quick question about the new station difference thing
though. What period does that cover? The period selected
when one selects 3 day, 7 day, etc? Or is it different?

If I look at those numbers, I track the local airport within
~.2 or so on all. Even though QC is saying a much greater
difference overall.


Keith
--
CW5250