Re: MADIS Weather Quality Charts
- WUHU, thanks for the info! There's a METAR 4 miles from me. My Data
is always in close agreement with it.
I've often wondered how I can be in such close agreement with this
METAR and show so much variability within MADIS!
--- In firstname.lastname@example.org, "wuhu_software"
> I think it means 1 degree F spread (plus or minus) about the mean
> My question has always been how large of an area is considered to
> in the data set used to compare other stations? Is it a fixedradius
> from your location?going
> If it covers a large area (as I suspect it does), a temperature
> variability of 1 degree is actually quite good IMHO.
> It seems you would have to have very stable conditions over a wide
> area to achieve better average errors.
> You might also see low standard deviation errors if you are a lone
> station in a given area or there are very few other stations to
> compare with. Of course those stations would need to closely match
> your own in order to see lower errors around the mean.
> The bottom line is that you could have a real 1/10 of a degree
> temperature accuracy and still have a 1 degree F standard deviation
> in the analysis data.
> --- In email@example.com, "schaka1" <blkguy@>
> > I'm noticing something interesting about my quality charts. I'm
> > wondering if anyone else is seeing the same thing.
> > It has specifically to do with the scatter diagrams. Without
> > a lot of statistically stuff what a scatter diagram shows is a
> > tendency. The dots should be clustered around some value if they
> are all
> > shooting for the same target.
> > On my charts most of the dots are clustered about one standard
> > higher than the target. This is for all parameters except
> > Pressure.
> > Anybody have any idea why that is?
> > http://weather.gladstonefamily.net/cgi-bin/wxqual.pl?site=C5229
> > <http://weather.gladstonefamily.net/cgi-bin/wxqual.pl?site=C5229>