[wxqc] Wrong focus?

[RapidsWx]

Gave up on those little red x's for pressure and started using:

http://weather.gladstonefamily.net/qchart/C0499?&addnl=C4420&addnl=KGPZ

KGPZ is the local airport
CW0499 is a VP1 at the office
CW4420 is a VP2 at the house 20 miles away from the former and latter

My stations seem to be pretty close for pressure to each other but
substantially different from KGPZ and the analysis.

Temp seems about the same throughout all four.

Dewpoint and humidity leave KGPZ as the odd-man-out.

Doubt that they will ever all agree. I use the tool in the link above to
view the trends which for the most part are pretty similar to each other
even there is separation in the scale.

- Jim

-----Original Message-----
From: wxqc-bounces at lists.gladstonefamily.net
[mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of
James.Dudley at noaa.gov
Sent: Thursday, February 23, 2006 10:35 AM
To: Discussion of weather data quality issues
Subject: Re: [wxqc] Wrong focus?


Folks,

I agree with Keith. I understand the focus of the verification statistics is
to give stations a baseline for what are considered "good"
observations based on surrounding stations. It is just that, a baseline.
It is quite rare that two stations (let alone several surrounding
stations) will have data that is identical. In my experience, each station
should have its own "microclimate identity" with unique data.
Yes, stations lying in similiar environments (dry land, flat topography,
etc) should have similiar readings, given an unchanging pattern). Even
properly sited instruments will have differing readings based on a myriad of
location affects such as type of soil, vegetation distribution (grass vs
dirt vs rock). As new stations come on line, In complex terrain all bets are
off and trying to emulate a surrounding station by altering one's readings
is counter productive. We need to know what the extremes are  in these
microclimates as long as the data is good for that microclimate. As new
stations come on line, I suggest we send the operator a statement explaining
just what the statistics mean and how they can use the results. 

Regards,

Jim Dudley
CW2553
Hanford CA


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