[wxqc] Re: Sea Level Pressure

[Mike Barth]

I don't have any idea, we don't keep track of what kinds of stations people
have.  Unfortunately, the Vantage Pro is quite popular so I bet there will
be more than I'd like in this category!

Mike

On Tue, 6 Sep 2005, John Webb wrote:

> Thanks Mike. Do you have any idea what percentage of APRSWXNET stations have 
> Davis equipment, and therefore are affected?
>
> John Webb
> C3212
>
> At 12:01 PM 9/6/2005, you wrote:
>> John,
>> 
>> Sorry I didn't reply sooner...
>> 
>> I'm afraid the QC processing doesn't have the ability to take into account
>> that some APRSWXNET stations are reporting SLP instead of altimeter.  I 
>> suggest
>> you contact Davis about fixing this -- the APRSWXNET protocol requires
>> altimeter.  In the meantime, you should ignore the QC results.
>> 
>> Mike
>> 
>> On Fri, 2 Sep 2005, John Webb wrote:
>> 
>> > Can anyone comment on 
>> this?................................................
>> >
>> > --------------------------------------------------------------------
>> > The Davis Vantage Pro II reports using sea level pressure reduction 
>> algorithm
>> > (elevation AND temperature corrections). I have noticed that QC takes 
>> this
>> > and then corrects it again for temperature. This causes barometer QC for
>> > Vantage stations to fluctuate significantly, especially after cold 
>> fronts.
>> > Can this be programmed in QC? Fact is that Davis Vantage stations do not
>> > report altimeter pressure.
>> >
>
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